JPS61500457A - optical fiber coupling device - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

[Detailed description of the invention] optical fiber coupling device Background of the invention TECHNICAL FIELD The present invention relates generally to communication systems, and more particularly to optical communication systems using fiber optic cables. Regarding the communication system.

With the rise of data processing equipment, the computer industry There is an increasing interest in communication between user devices such as devices.

Conventionally, modems (modulators and demodulators) have generally been used as a means of communication between user devices. has been used. If it is a desk type modem, #A quasi-pear type network and telecommunications However, modems have some deficiencies. For example, the data transmission modulation rate is 0.

Restricted to the specific modem used.

Modulation speeds have increased substantially over the past few years, but data communication via modems The speed is slower than other data communication methods, partly due to the modem operating frequency. The problem is that the bandwidth is limited due to the number of devices. Furthermore, the modulation rate of the modem is 1 It must be designed to match the modulation rate of the data processing equipment during the communication; This would further limit the flexibility of or if the modem has electromagnetic or radio frequency interference ( EX1/RFI), susceptible to eavesdropping and data link interception.

Other shortcomings are discussed in Greenberg's U.S. Pat. , 399," No. 563 (promulgated on August 16, 1983). There is.

Other data communication methods 1overcome the shortcomings of regular modems0 For example, the speed of digital data transmission between user equipment using a microwave link. We are trying to raise the bar. However, microwave links require expensive data transmission methods. In addition to being necessary, there are physical limitations that prevent it from being used in many applications.

Fiber optic links provide an optical means of data communication that is free of electromagnetic and radio frequency interference. By providing this, the drawbacks of conventional devices are overcome. However, fiber optic caves Due to the complexity of data transmission over cables, conventional devices are , are expensive and not economically competitive with standard modems.

Representative fiber optic communication systems include Ball, U.S. Pat. No. 1,381, No. 881 (promulgated May 3, 1983), Greenberg No. 1,399,563 (promulgated on August 16, 1983), Herskowit ( Herscott+1tz) No. 4,366.565 (December 28, 1982) 4.289 of Sugimoto et al. , No. 373 (promulgated on September 15, 1981), No. 4.3 of Hafl. No. 62,358 (promulgated on December 7, 1982), and Seki et al. Atal) No. 4,341,438 (promulgated on July 27, 1982) Disclosed in the specifications.

A typical fiber optic data link consists of two wires so that optical data can be sent and received at the same time. The major drawback is that a fiber cable must be used at the end of the cable. 2 ke Using cables doubles the cost of fiber optic data communication lines.

To overcome the above drawbacks, various coupling devices have been devised that require only one cable. For example, the ball has been used.

Automatically batch optical signals. Discloses an expensive and complex fiber optic crossbar switch However, this device requires a large number of photodetectors and LEDs (light emitting diodes). Essential.

Greenberg discloses a 1 hour side load device, which By disabling each receiver during data transmission by the corresponding transmitter, the Y-coupler Eliminates problems caused by reflections.

With a type device, one optical fiber is used. Enables simultaneous bidirectional data transmission Ru.

Sugimoto et al., Bafuru () Iafle) and Seki et al. l) is the wavelength that enables bidirectional optical data transmission over a single fiber optic cable. disclosed multiplexing devices, all of which require complex and expensive multiplexing configurations. do.

Miyaku Natsume! The present invention includes a receiving fiber means for receiving an input optical signal, a transmitting fiber means for transmitting an output optical signal. a fiber means, coupling and connecting the transmitting/receiving fiber means and an optical fiber cable; , by axially angularly aligning the transmitting/receiving fiber means and the cable means. , the input optical signal from the link cable to the reception light guide means and the link cable from the transmission light guide means. Coupling connection for bidirectional optical coupling at the same time as the output optical signal going to the cable Enables simultaneous bidirectional transmission of optical data with a single optical fiber cable consisting of overcomes the shortcomings and limitations of conventional devices by providing a are dressed.

The present invention further provides optical fiber cable means for bidirectionally communicating input and output optical signals; Receiving fiber means for receiving optical signals, transmitting and receiving fiber means, and optical fiber cable By angularly aligning the transmitting/receiving fiber means and the optical fiber means in the axial direction, A coupling connection means for simultaneously bidirectionally coupling input and output optical signals with a cable means; a receiving assembly that detects the optical signal and generates an input electrical signal representative of the input optical signal; and a transmission assembly for generating an output optical signal in response to the input electrical signal. It consists of a two-way optical fiber communication device consisting of a bridge means.

The present invention further provides electronic data input signals and ready-in signals from a plurality of user devices. By decoding the input optical signal, the decoding file is generates an optical data signal and decodes an optical data signal and an optical status signal. A fiber receiving means for generating a fiber activity signal, ready The ready-in signal and the fiber activity signal are received, and the ready-in signal and the fiber activity signal are received. from the state logic decision table addressed by the switch signal and the switch signal. Synchronous status means forming ready-out and status signals, electronic serial data output A line excitation means for transmitting the ready-out signal and the data-out signal through the output. output optical data signals and output optical states indicating the operating status of the fiber optic interface device. a fiber transmission means for transmitting an electronic data signal and a switching signal; and receiving the decoded fiber data signal and in response to the switching signal.

From an electronic data signal and a decoded fiber data signal.

It consists of a data manipulation means for selecting one output signal, and is used to control multiple units of the communication network. consists of fiber optic interface equipment that connects the laser equipment.

The advantage of the present invention is that it allows high speed (up to 100kbps) speed selection with automatic speed selection. The main point is that it provides a synchronous data transmission device that can transmit data. Automatically select speed This eliminates the need to match the modulation rates of the modem and associated user equipment.

Additionally, the present invention provides dual electronic serial data ports, thereby allowing a single optical fiber to be used. Multiple devices can be connected to the iVa interface device.

Automatic switching and sharing of system resources eliminates the need for mechanical switches. use a coupling device built into a standard fiber optic Funi-Rule connector. This allows data to be transmitted in both directions simultaneously using a single fiber optic cable.

The coupler/connector combination device is an optical fiber that is convenient, inexpensive, and has high optical coupling efficiency. Cables are free from electromagnetic and radio frequency interference, shorts, grounding problems and electrostatic discharge. It is not only easy to install, but also because there are no environmental protection risks.

Protect data by preventing information eavesdropping and data link interception.

The device of the present invention operates without an external power source and utilizes a network method. This makes it possible to share system resources over long distances. low loss high bandwidth Equipped with communication links. Optical fiber cables have fewer restrictions on installation, so For example, it can be installed in suspended ceilings with fluorescent lights, elevator shafts, etc., and can be installed in factories, etc. Suitable for noisy environments.

In addition, the fiber optic interface device is equipped with a self-blade mode for flexibility in deployment. Operates on either external power from a connected device, or an auxiliary power module do.

iU 1 monme A first object of the present invention is to provide an improved fiber optic communication system.

A second object of the present invention is to provide a durable fiber optic communication system that is easy to maintain and install. There are 4 things that provide the stem.

A third object of the present invention is to enable sharing of system resources among multiple user devices. The purpose of the present invention is to provide an optical fiber communication system with a high level of performance.

A fourth object of the invention is to automatically select the speed.

Optical fiber communication that allows high-speed, full-duplex, synchronous data transmission over a single fiber. The goal is to provide a trust system.

Other objects, advantages, and novelty of the invention will be apparent from the following description. but in particular by means and combinations defined in the appended claims. This can now be achieved.

Brief description of the drawing The accompanying drawings illustrate preferred embodiments of the invention.

FIG. 1 is a schematic block diagram of an optical fiber interface device according to the present invention. be.

FIG. 2 is a typical example of a point-to-point data link.

FIG. 3 is a schematic block diagram of a one-branch data link.

Figure 4 is a schematic block diagram showing a bridge connection between fiber optic interface devices. FIG.

FIG. 5 is a schematic block diagram of an optical fiber interface device.

FIG. 6 is a schematic diagram of the output conditioner and power supply device.

FIG. 7 is a schematic diagram of a line receiving device.

FIG. 8 is a schematic diagram of a fiber receiving and data decoder.

FIG. 9 is a schematic diagram of a state logic controller.

FIG. 10 is a state diagram.

FIG. 11 is a schematic diagram of the LED control circuit.

FIG. 12 is a schematic diagram of the data manipulation device.

FIG. 13 is a schematic diagram of the line excitation device.

FIG. 14 is a schematic block diagram of the encoder fiber transmission device.

FIG. 15 is a schematic diagram of the transmission circuit.

FIG. 2 is a schematic diagram of a fiber optic link cable, and a transceiver board.

FIG. 17 is a schematic diagram of an optical fiber link cable.

FIG. 18 is a schematic diagram of the procedure for assembling the optical fiber light guide when inserting the ferrule.

Figure 19 is a schematic diagram of the optical fiber light guide attached to the subassembly ferrule. FIG.

FIG. 20 is an end view of the subassembly ferrule and optical fiber guide. Ru.

FIG. 21 shows a subassembly ferrule surrounded by mode strip media. FIG. 3 is a schematic cross-sectional view of an optical fiber light guide line.

FIG. 22 shows the subassembly ferrule and surrounded by mode strip media. FIG. 3 is an end view of the optical fiber guide line.

FIG. 23 is a top view of the filling device.

FIG. 24 is an end view of the filling device.

FIG. 25 is a side view of the filling device.

FIG. 26 is/is an exploded view of the components of the receiving device.

FIG. 27 is an end view of the PIN diode and receiving fiber.

FIG. 28 is a schematic cross-sectional view of the receiving device.

FIG. 29 is a sectional view of the transmitting device.

Figure 30 shows the procedure for preparing the cable end when attaching it to the cable ferrule. FIG. 1 is a schematic side view of an optical fiber link cable.

FIG. 31 is an exploded view of the fiber optic interface.

Figure 32 is a graph showing the gear width side attenuation of the coupling connection device and the degree of reflection. It is f.

detailed explanation of FIG. 1 is a schematic diagram of a fiber optic interface (10) according to the present invention.

As shown in Figure 1, the fiber optic interface (lO) is compatible and Two electronic serial data links consisting of standard R5232C links that can be freely configured into a network. It has tap ports (12) and (14).

Data ports (12) (14) are ETA41 quasi-type R5422, R5423 and and interfaces such as R5449, and coaxial cable interfaces. Network links can be formed via other interfaces.

The optical fiber interface (10) is a microcomputer, minicomputer A variety of devices such as computers, main computers, control devices, terminal devices, peripheral devices, etc. It is an interface device that connects with an optical fiber cable, and is an interface device that connects with an optical fiber cable. Free of interference, short circuits, grounding problems and electrostatic discharge, as well as fiber optic links protects data by preventing information eavesdropping and data link interception. Ru.

As shown in Figure 1, the optical fiber link cable is a bidirectional optical fiber input/output cable. At the port (16) it is connected to the fiber optic interface (10). light fu Fiber interface (10), one (7) 3’6 fiber cable Interconnected with other interfaces for directional communication.

Bidirectional communication with an asymmetrical bidirectional Y-coupler integrated into a conventional ferrule connector This makes it possible to use separate fiber transmitter and receiver cables between fiber optic interface devices. There is no need to install cables. In addition, optical fiber link cable (20) ( (See FIG. 2), the connection state between the devices can be controlled and monitored by sending an operating state signal.

The dual type serial data boats (12) and (14) are connected to the system as shown in Figure 2. Enabling resource sharing, networking and circularization.

Figure 2 shows one representative point-to-point data link between user equipment (18) and (26). It shows the link. For the user device (1g) (26), the microcomputer A data processing device such as a computer, minicomputer, main computer, or It consists of peripheral devices such as computers and terminal devices, and can be combined and connected in various ways.

User equipment! (18) is connected to the optical fiber by means of an electronic serial data communication link (19). communicates with the binder interface (17).

As mentioned above, the electronic serial data link (19) is a standard R5232C transmission link. or between the user equipment (18) and the fiber optic interface (17). and any other suitable means of communicating electronic data to the column.

The fiber optic interface (17) is an electronic direct link output from the user equipment (18). Convert the column data to optical transmission data and send it to the optical fiber link cable (20) and receiving optical data transmitted through the optical fiber interface (22); this.

Converting to electronic serial data in a format suitable for communication with user equipment (18).

Fiber optic interface (22), electronic communication data link (24) and The user device (26) functions similarly and communicates between the user devices (18) and (26). form a point-to-point full-duplex data communications link.

(17) and (22) utilize a bidirectional optical fiber coupling device.

Optical fibers are used to transmit optical information in two directions simultaneously using a single optical fiber. IVA communication links cost half as much as traditional dual fiber optic cable links. nothing.

Figure 3 shows a branch data link using the optical fiber interface device of the present invention. It is a schematic diagram.

As shown in FIG. 3, the user equipment (32) (34) has an optical fiber interface. Electronic serial data communication connected to a dual electronic serial data boat installed in the bus (28). Via the signal line (36) (3g).

It is in communication with an optical fiber interface (28). fiber optic interface (28) (30) is one optical fiber cable (40) according to the above-mentioned procedure. are combined with. User equipment (42) (44) has one communication line (36) (3g ), connect the optical fiber via the electronic serial data communication line (46) (4g). It is in contact with the binder interface (30).

With fiber optic interfaces (28) and (30), 4 users!　 (32) (34) (42) Any two of (44) can interact with each other at any time. Can communicate. Of the user devices on the network, all but the two interconnected A unit that can ensure privacy and security between connected devices because they cannot communicate with each other. The control signals issued by the laser device are transmitted through the fiber optic interface. , to control access between user devices.

Fiber-optic interface logic circuits connect any two user devices Since it is equipped with a protocol that automatically determines the

FIG. 4 shows an optical fiber interface according to the present invention combined to form a ring ring and an electrical bridge. It is a schematic diagram showing the point of forming.

As shown in Figure 4, at three or more locations, the system is connected between devices in the same way as in Figure 3. While resources can be shared, the total communication link can be extended to approximately 10 km.

Figure 4 shows an optical fiber interface ( User equipment (60) (62) is shown in contact with (50). User group W (70) and (72) are connected to another location via communication links (74) and (76), respectively. The fiber optic interfaces (52) and (54) are connected at the location. Hikari Fire Bucket A cable (68) forms a communication link between the two locations.

The fiber optic interface (52) (54) is an electronic serial data link (78). ), which are bridged by an electronic serial data boat. optical fiber The interface (54) connects the optical fiber via the optical fiber cable (5)). I am in contact with Interface (54). User equipment! (80) (82) is light Similar to fiber interface (50), data link (84) (86) via a fiber optic interface (56).

Therefore, each user device I (60) (62) (70 ) (72) (80) (82) can be combined to reduce network system resources. For example, one or more computers can share one or more computers in different locations. Printer system resources can be shared. Also, status signals issued from each user device teeth.

A communication link that is propagated throughout the network and formed between two devices within the network. Establish protocols for

electronics FIG. 5 is a schematic block diagram of an optical fiber interface according to the present invention. .

As shown in Figure 5, the optical fiber interface is an R5232C port, a line receiver (90) for receiving "data" and "ready" signals from the user equipment; At the same time, data and records are transmitted from the R5232 output terminal (93) to the user equipment. It has a linear vibrator (9z) that transmits the D signal.

Each fiber optic interface has a ready port such as an R5232C port (93). The signals are shown in channels A and B. In addition, from the line vibrator (92) to the line receiver The “ready in bridge” signal sent to (90) The wire receiver transmits electronic serial data indicating the ready state of the fiber optic interface. The input signal is shared with the CMO5wI logic circuit used in the fiber optic interface. Adjust to a level suitable for use. Similarly, the linear vibrator (92) is CMO5 Signal to R5232 voltage level! 5 Il adjustment.

The fiber receiving/data decoding device (94) is connected to the optical fiber input light guide line (95). Receive fiber input signals from (two fibers) and perform transition decoding is used to decode the optical signal transmitted through the optical fiber input light guide (95). consists of a coded electronic serial data signal. When the decoded fiber data signal is output Both indicate the fiber activity, which indicates the approximate pulse repetition rate of the optical fiber signal being received. Give a bitty signal.

The fiber activity signal exhibits three different states.

A zero state means that no activity occurs on the fiber optic line.

If no data is being transmitted on the link, thus indicating a breakdown of the fiber optic link. Regularly monitor the durability of fiber optic links, even if Mark 1 condition is 40 It indicates activity in the millisecond range, and the Mark 2 state indicates activity in the 15 millisecond range or less.

The fiber activity signal is a state logic control device! (9g), while decoding The fiber signal is sent to a data manipulation device [(100). optical fiber interface The base (10) is connected to the data handling device [(100) to [data out-fiber signal is received, transition-encoded, and applied to the optical fiber Φ light guide (102). It has an encoder/fiber transmitter (96) that transmits in shape. The device I (96) is the data manipulation device t! Transmit F1 and and F2 signals, and controls their transmission speed.

The transmit F1 signal indicates a mark 1 transmission interval of 40 ms/pulse and The Transmit F2 signal has a mark 2 or data transmission time of less than 15 ms/pulse. Indicates the distance.

A state logic controller (98) receives a ready signal from the line receiver (90) and a The fiber activity signal is received from the fiber reception/data decoder device f (94). Receive. In response to these signals, read-only storage (RO) references tables Data manipulation equipment! Switching signal used by (100).

and a line vibrator (92) generates a “ready out” signal to be transmitted through the optical fiber. Controlling access between various user devices in an interface network 4 OEMs that indicate the conditions defined between the LED control signals and interfaces. Issue a control signal.

The OEM control signal is a machine-readable signal, while the LED control signal is a ! (104) and causes the LED to emit light at three different speeds. The transmit F1 and F2 signals, representing link conditions, are This is an operating state signal indicating the operating state of the face.

FIG. 5 further shows that the auxiliary power supply or electronic series data R52 is provided with positive and negative voltage sources. The fiber optic interface (10) can be powered from any of the 32 inputs. A power adjustment/supply device (106) is shown. This outfit @ (106) outputs a power up set signal indicating that power can be distributed from the power supply circuit.

Figure 6 shows the power wI4! ! - A schematic circuit diagram of the power supply device (106).

This outfit @ (106) is ``Lady in Aj line, ``Lady in BJt'' Lady in Auxiliary AJ line, "Ready-in auxiliary BJ line," Data-in AJ line and "Data-in Power is supplied from the R5232 human power line (108) consisting of BJII&, but these All signals are issued from the user equipment.

The terminal device ready signal (110) is connected to the current limiting resistor (112) and the diode ( 114) to accumulate the positive voltage signal. Similarly, the data signal (116) is The positive current is delivered through a current limiting resistor (118) and a diode (122). Collecting the pressure signal and accumulating the negative voltage signal via the diode (120) .

The positive voltage signal at the output end of the diode (122) is passed through the line (124) to the terminal equipment level. The D signal (110) is applied to the sent positive voltage signal. The insulation resistor (127) , the positive voltage signal on the data terminal line (116) is connected to the positive voltage signal on the terminal ready line (110). The positive voltage at the output of the diode (122) isolating from the voltage signal is further It is sent to the inverter (126), converted into a negative voltage, and then connected to the diode adder circuit (120). ) is added to the negative voltage collected at the output of the

The current limiting circuits (128) and (130) each control the terminal device level at power-up. Limit the amount of current supplied from the D line (110) and the data terminal line A116) At the same time, when powering up the fiber optic interface, a 1K ohm resistor is applied. The resistors (136) and (138) are connected in series with the positive and negative voltage sources.

After power-up, the transistor (14g) (150) is connected to the wire (132) Interconnecting the reference terminals with an analog switch (140) via (134) As a result, the comparator (144) outputs a saturation state and the end of power-up. Ru. This can be determined by the power-up reset signal (142).

The positive voltage level is sampled at the voltage end of the limiter (1211).

A comparator (144) compares it with a reference voltage output from a voltage generator (146). .

When the stray current exceeds the power supply, the positive voltage level drops below the reference voltage level and the power is turned off. The optical fiber output data is no longer transmitted because there is no reset level. , the device goes into standby mode.

The power-up reset signal is routed through conductor (152) to the analog switch ( 140) to connect the conductors (132) and (134).

Auxiliary power is obtained from the J3, J4 bins and empty bins of the R5232 boat.

The LC crossing wave circuits (154) and (156) filter the auxiliary power and eliminate the transients in the residual circuit. Prevent the condition. The 1st current limiting resistor (158) (160) controls the current of the auxiliary power supply. Restrict! The auxiliary power for one installation passes through the connections (162) and (164) to the optical fiber. Iba interface (10).

The diodes (166) and (168) are used for the auxiliary power supply, terminal ready signal, and Combine the power available with the data input signal.

This power is combined with auxiliary power at connection points (170) and (172).

Zener diodes (174) and (176) control the positive and negative supply voltages.

Capacitor (t7g) (180) filters the output voltage signal.

FIG. 7 is a schematic diagram of the line receiving device (90).

The receiving device I (90) is an R5232 input terminal, and receives five types of input from the user device. input signals, i.e. "Ready in Bridge J signal, "Ready in B" signal, "Ready in A" signal.

Receives "Data in A" and "Data in B" signals, but these signals are either user equipment or bridged fiber optic interfaces ( 10) form five R5232 inputs.

One transistor switching circuit (192) is provided for each input data channel. consists of a common emitter amplifier. The line receiving device converts "1" into approximately 2.1±0.5 It serves as a low power R5232 wire receiver that detects inputs above volts. 0 ．． Any input below 8±0.5 volts will be detected as "0". these The data signal is low pass filtered with an RC filter (132) (1116).

The resistor network (186) (18B) connects the input signal voltage to the transistor switch ( 192) to form a resistor divider network that adjusts to a level suitable for driving. Sui The collector voltage of switch (192) is the CMO5 circuit used in the rest of the device. Suitable for interfacing with This circuit consists of a diode network (190) Therefore, it is protected from negative large voltage signals sent to the R5232 power line.

The open collector pull-up resistor (194) is connected to the transistor switching network (192). ), send a bias current to

FIG. 8 shows a fiber receiving and data decoder device (94).

This device (94) receives the optical signal (200) and determines the correct optical pulse and reflected pulse. The correct pulse is then decoded and sent to the fiber optic interface. (10) performs the CMOS level encoding used.

Light pulses (200) representing a logic 0 are coded and separated in 1.5 microseconds. The signal is transmitted through the optical fiber as two 500 nanosecond pulses (double pulses).

A logic 1 is encoded with one 500 nanosecond pulse.

CMOS level 1 when a single pulse is detected, and CMOS level 1 when a double pulse is detected. Outputs CMOS level 0.

As shown in FIG. 8, the PIN photodiode (202) is an optical fiber receives an optical signal (200) transmitted by a cable and, in response, receives an electrical pulse. signal.

The diode (202) is biased with the power supply voltage, and when the optical signal hits it, Current flows and creates a voltage across the resistor (204). Stray capacitance (206 ) limits the response time of the photodiode (202). P Engineering N Photodiode Since the current level of the board (202) is small, the amplifier stage (208) (210) is to increase the current pulse level.

The amplifier (20g) is a buffer with a gain of 91″, while the amplifier (210g) ) is an inverting amplifier with a gain of about -6.

A capacitor (212) AC couples the amplifier (20g) and (210).

The output of the amplifier (210) and the input of the amplifier (208) are connected to the resistor ('214). and is fed back via a capacitor (216) to the fiber receiver. Improves pulse response. The output end of the amplification stage is connected by a capacitor (21g). 1 is AC coupled to the remainder of the circuit.

The detected signal is applied to bias circuitry (220).

Resistors (222) and (224) constitute a voltage divider network, and resistor (224) Generate a reference voltage signal. The capacitor (225) connects the resistor (224) to AC. The resistor (,226) keeps it at a positive DC voltage level.

Resistor (224) sets the threshold of comparator (228). Threshold selection is This is important for the proper operation of the receiver/data decoder device (94), and is the most important. Instead of detecting large reflected signals, we need to choose to detect the smallest non-reflected signal. be.

The comparator (228) is connected to the data line (230) when the threshold set by the resistor (224) It is a low output bipolar comparator that provides an output signal when .

The output of the comparator (232) is sent to a decoder circuit that distinguishes between single pulses and double pulses. as well as toggle flip-flop (236) and one-shot multi It is input to the vibrator (23B). The toggle flip-flop (236) is Every time a pulse is applied to the input end (242), the state of the output end (240) changes.

That is, at the first pulse, the output terminal (240) changes from 0 to 1 state.

The one-shot multivibrator (238) activates the three microphones after detecting the first pulse. A pulse is generated in seconds and the data at the output terminal (240) is latched. Therefore, the flip If the flipflop (236) receives only one pulse in 3 microseconds, the flipflop (236) The flip-flop (24g) outputs "1" from its output terminal (250).

When two pulses are received, the flip-flop (24g).

Latched with 0 output.

The one-shot multivibrator (23g) also has a reset wire (244). In order to clear the toggle flip-flop (236), the output line (250) is , decoded file indicating O or 1 state of single pulse or double pulse, respectively. Give a warning signal.

The one-shot multivibrator (23g) also allows pulse repetition of detection data. It outputs a fiber activity signal (252) representing the frequency of the At the output of the comparator (2211).

A pulse is generated each time a single pulse or double pulse is detected. Therefore, the fiber The activity signal indicates the data generation rate at the optical fiber input.

FIG. 9 is a schematic diagram of the state logic controller (98).

This device (98) is a synchronous state device and the clock (254) is KAI/K A2 detector (256), data in latch (258), output controller (260) , 1 which generates the clock signal sent to the output latches (262) and (264). It is look-locked to 00 and consists of an RC oscillator using a CMOS timer. Synchronize all state logic of the device (98).

Fiber emitted by one-shot multivibrator (see Figure 8) (23g) The activity signal (252) is the input terminal of the KAI/KA2 detector (256) is applied to

The detector (256) detects data each time the clock (254) issues a clock pulse. Data about the fiber activity latched in the inlatch (25g), i.e. Give out KAI or KAI [.

The detector (256) detects three types of fiber activity: A speed (approximately 40 data arriving at the AII rate (approximately 15 microseconds per microsecond), ) and the no-data state.

A down counter is used as the KA I/KA n detector (256). same Similarly, the data-in latch (25&) is connected to the ready-in A input terminal (266), ready from the inB input (268) and the ready-in bridge input (270). Latch the current state of the data.

Two fiber activity signals (KA I, KAn) and a ready signal ( The five signals consisting of ready-in A, ready-in B, ready-in bridge) are (25g) and is stored as an address in the read-only storage device (272). applied. The six additional address signals consist of ] phase signals and five feedback signals. signal.

The phase signal is changed to output 16 bits from the 8 bit output of ROM (272). Address the ROM. The ROM (272) has a configuration that outputs 8 bits. The state logic decision table is input as data and according to the 5-phase signal (265), Two sets of 8-bit output signals are provided for each address location.

When the phase signal (265) is low, the output latch (262) closes the connector (261). the first 8 bits of data are latched into the output latch (262). When the 0 phase signal (265) is high.

The output latch (264) is enabled via the connector (263) to Bit data is latched into the output latch (264).

Instead, the state logic control device is configured with a synchronous combinational logic device using LSI technology. can. This uses a series of combinational logic gates and flimb flops to signal, ready-out signal and fiber optic data rate signal (transmit This is a device that generates Fl, F2).

The feedback signals (So, SL, Sl, F2-1.F2-2) produces an output that is a function of the previous and current inputs. The 11 input data are R This is the address of the memory location to be accessed in the OM. ROM (272) is It is 2048 times 8-bit memory.

The power supply control device (260) supplies power to the ROM (272) only when accessing, and supplies power to the ROM (272) only when accessing. In this case, the ROM (272) is turned off, so the power consumption is three times greater than continuous use of the ROM. It can save power.

In operation, the power control unit w (260) stores data in the ROM (272) for access. Next, the output data is latched to the output latches (262) (264), Wanders from ROM (272). 1 phase because 16-bit output data is required The signal (265) operates the ROM (272) in two phases, with 8 bits in each phase. Read and apply this alternately to the output latches (262) and (264).

The output latch (262) outputs eight types of output signals, among which three types of switching signals, That is, rA-B switching J, rA-F switching (optical fiber), and rB-F switching ” is applied to the data manipulation device (100) and transmits Fl and F2 signals. The number is.

applied to the encoder fiber transmitter (96).

Transmitters F1 and F2 indicate the operating status of the fiber optic interface. It is an operating status signal, and when transmitting data to A-I or A-■, the encoder frame is Fiber transmitter! A transmission signal is generated from (96).

Readyout A, Readyout B and Readyout bridge signals are linear oscillators. (92) is applied. The ready-out A signal is connected to the fiber optic interface (1 This is a CMOS signal indicating that the A port of 0) is in an output enabled state.

The ready-out B signal indicates the output enabled state of the B boat.

The ready-out bridge signal is a CMOS signal for bridge control. A-B cut The exchange signal is a CMOS signal that forms a full duplex data bus between boats AB.

The A-F switching signal forms a full-duplex data bus between the A port and the fiber optic signal. This is a CMOS signal formed by Also, the B-F switching signal is the B port and optical fiber signal. These are CMOS signals that form a full-duplex data bus between the two. Transmit F1 and F2 signals provide data to the transmitter at KAI and KA11 rates, respectively. This is a CMOS signal that instructs supplementation.

The output latch (264) indicates the current operating state of the fiber optic interface (10). Outputs three types of LED control signals to indicate.

The ROM (272) outputs three types of status bit signals So, 31 and Sl. , tracks the current state of the state logic controller. In addition, two feedback bits using the output signals F2-1 and F2-2.

Track the active state of the fiber (KA I, KAn or inactive state).

Three status bit signals So, Sl and Sl are combined with one LED bit signal. appears on the OEM control signal connector in FIG.

The status bit signals So, Sl and s2 correspond to the eight types of fiber optic interfaces. Code the operating status. The numbers representing these states are as shown in the primary table.

Number Status 0 Wait 1 Start 2 people bridge activation 3 Connection between A-8 4 Link of A 5F-A connection 6 Link of B Connection between 7F and 8 The optical fiber interface is in one of the eight operating states listed above. However, this is Lady in A.

Current status and history of Ready-in-B, Ready-in-Bridge, and optical fiber link signals Determined by

In the standby state, the interface is powered, but all ready-in (A, B bridges) g) Since the signal is in the off state, there are three conditions for the activated state, namely activation of A. , B's activation and F's activation exist. In this state, the interface is unpowered. Then, one ready-in signal (A, B bridge or F) is turned on.

There are two conditions in the link state: A's link and B's link. Ru. In this state, the interface is turned on and the ready-in signal and fiber activation signal, but does not receive an end-to-end connection confirmation signal.

The state in which A is activated as a bridge is limited to when the device is bridged, and A is activated as a bridge. The device becomes ready and bridge signals from other devices are activated.

There are three conditions for the connection state: A-8 connection, A-F (optical fiber) indirect There are connections and B-F (optical fiber) connections.

The following table shows the status of the optical fiber interface (10) and the input and output terminals of each part. It's better.

Ready in Ready out Data out status FBBRA BBRA FB ALED standby 0000 000 MKI A B Off A start 0001 010 MKI A B Activation of Off B 01dO000 Seed IAB Off 00 10 000 MKI mum B Off F activation 1000 010 A+BA+ FB+F high speed 2000 010 A+BA+FB+F on^ bridge activation 1 011 110 A+BA+FB+F On 0011 110 Seed IAB Off F-A link 1ddl 010 A+BA+FB+F on F-Shitsuka link 1ldd 010 A+BA+FB+F on 101d 010 A+BA+FB +F high speed 20 1 d 1 1 0 A+B＾FB+F on A - connected dldl, 111 MKI A B Low speed FA connection 2ddl 001 ^　MKF Low speed FB connection 21dd 110 B FMK Low speed input d Not considered IN　p=Q　No signal during the last 150ms IN　F”1　30 to tSO Millisecond stripe interval signal INF = 2 Reception output at intervals of 30 milliseconds or less A Boat A signals the data input to the specified output port.

B. Data input of board B, specified output Inform the force boat.

F Specified output of data input of boat F Inform the boat.

A0B Inform the fiber boat of the data input signal “OR” of boat A and let

A+F Inform boat B of data input logic 1 of boats A and υψ.

B+F Inform boat A of boat B and the suspicious data input logic “Zen”.

MKI Sends logic 0 to fiber at Ω1 speed.

U's ON l garden times μ side color debt reduction continues without interruption) 5th 10th flashing st, v 1 blink i times Sends logic 0 to R5-212 interface.

From the table above, it can be seen that for the optical fiber tab ace (10), there are two different operations. Note that there are modes.

In other words, this device allows any two sets of devices within the network to communicate at any time. made possible. Operates in reliable full-duplex mode, with one device speaking and its Operates in broadcast mode, where other devices listen.

When operating in full-duplex mode, the interface Connect the first two devices, but in this mode, the two connected user devices Receive injury data.

The user equipment sets the ready-in lead wire to high and issues a connection request. ( 10) allows the user to check other devices in the network based on the LED status information. informs the current status of the location and connection fibers to adjacent equipment.

When two devices issue a connection request to a third resource that was previously in a ready state. solves the fun tension based on first-order rules.

Case (1) The remote device is in the ready state and a service request is issued from A and B at the same time. Case: Attire! Connect B to the remote device.

Case (2) A is in the ready state, and a service request is issued from B and a remote device at the same time. If: Connect device B to A.

Case (3) B is in the ready state, and a service request is issued from A and a remote device at the same time. If: Connect device A to B.

Case (4) Equipment! A or B is ready and one is on either side of this connection point. If a service request is made from two remote devices at the same time: one near the connection point The remote device is connected to device A or B (nearer is the number of connection points between 5 ).

Case (5) Two devices where device A or B is in the ready state and both are on the same side of this connection point If service requests are made simultaneously from remote devices: the connection is unpredictable, j In other words, it is possible that the one closer to this connection point is connected to device A or device B. Sometimes two remote devices may be interconnected (configured by a state logic controller). do).

None of the devices in the network have an activated ready-in signal, or or if the transmitting device has this signal, it can operate in broadcast mode. . However, all devices other than the transmitter input data to the "mark" (logical O). All other devices in the network that must have a signal must be either the transmitting device or Receive data from

One or more devices transmit at any time (there is no data-in signal at "mark"), but or broadcast if any dormant device has an activated ready-in signal. An alternative embodiment that cannot communicate is the type of board intended for installation in the host product. using equipment. The board type has one connector that forms the interface. It can be wired as desired to operate in several different operating modes. It can be configured as follows.

There are also A-82 boats. The A boat is a TTL level port, For TTL, 0 to o, g volts is rOJ, and 2.1 to +5 volts is "1". This is an interface standard.

The B boat for ring connection is an R5-232 boat or a bridge boat. , R5-232 is -3 to -15 volts "off" or "mark", + The interface standard is 3 to +15 volts “on” or “space”. Ru.

For a board type power supply, +5. +/-42 volt power supply or +5. +12 volts There is a power supply, and the former has the A boat in TTL mode and the B port in R5-232 mode. The latter is operated in mode.

Operate only A port in TTL. B boat R5-232 operation is supported. However, it can be used as a bridge.

The following table is an identification table of board type cache I10 signals, bins and signal names.

Type Bin Signal Name TTL 16 Data in A TTL 18 Ready in A TTL 11 Data out A TTL 14 Ready Out A R5-2322 data in B R5-2323 Ready In B R5-23212 Lady in Bridge R5-2321 data out B R5-2323 Ready Out B R3-23217 Ready Out Bridge TT1. 9 Status 0 TTL 10 Status I TTL 8 Status 2 TTL 6 state 3 Power 19 Earth Power 5 PWR+in Power 20 PWR-in Power 15-+5V Power 7 PwrProgl/Earth Power 13 PwrProg2 For PiIR-in, two options are possible.

R5-232 operation PWR in input must be less than -10V and more than -16V with respect to ground. (Normally -12V with ripple less than 2V).

Adjust the Zener shunt so that the desired current increases as the input voltage increases. -1 20mA for 0V input, -12V input.

45+wA and -15V input requires 100i+A.

Watari 1” Season 1 Ground the PWR in input and interconnect bins 7 and 13.

With two power option programming pins, e.g.

Select power options such as TTL-only operation or R5-232 operation. these bin, select the negative voltage power option.

Negative voltage operation: Bins 7 and 19 are grounded, and jar 13 is left open.

Positive voltage only operation: Bin 19 is grounded and bins 7 and 13 are interconnected without any other connections.

The operating status of the board type is represented by four types of signals.

These indicators are state 3, state 2. State 1 and state 0 are 4-bit codes. state 3 is the most significant bit and state 0 is the least significant bit.

The meaning of the code is shown in the table below.

Working condition Code status meaning O standby: No receive fiber signal and ready input.

1 Startup If there is no ready input, KAI exists in the fiber and one ready For input, no fiber signal.

2 Bridge activation of A No fiber input, ready-in bridge and ready-in A is at a high level.

3 Connection between 8 ports to AB connection.

4 Vacancy.

5. Connection between AFs Connection between AF ports.

6. B link Ready-in-bridge is high level and fiber has KAI .

Connection between 7 and 8F Connection between BF boats.

8. Vacancy.

9. Startup: There is no ready input, and there is KAn on the fiber.

10 A is activated as a bridge. There is a KAI on the fiber, and ready-in-bridge and redet In A is at a high level.

11. Vacancy.

12 A-link ready-in A is at a high level, and KAI4 B-link is attached to the fiber. Credit in bridge is high level and there is KAI on the fiber.

15. Vacancy.

FIG. 10 shows the operating state of the present invention, supplementing the table above, and shows the operating state of the synchronized state device. details.

FIG. 11 is a schematic diagram of an LED control device according to the present invention.

The LED control circuit (104) blinks at one of three blinking speeds to emit light. Diagnostic light emitting diode (LED) showing the current status of fiber interface family [(10) ) to drive.

Random blinking approximately once per second indicates that the user equipment connected to other interface equipment Indicates the availability of a certain source, indicating the establishment of an end-to-end connection.

``LED off'' indicates an interrupt to the fiber link between two interface devices. indicates the off state (no power supplied) of the interface device.

The state logic control device (98) has three types of LED control signals (27g) (280). (282), these signals are connected to an RC oscillator using a comparator (290). applied to the position.

The oscillation circuit consists of resistors (284), (286), (288) and capacitors (2 92) 53 blinking speeds are set according to the RC time constant.

For example, the RC time constants of resistor (284) and capacitor (292) are:

The RC time constants of the resistor (28B) and capacitor (292) are different. the result, By inputting to various control lines (27g) (280) and (282), different outputs can be generated. The vibration velocity is obtained.

Diode (294) when lines (280) and (282) are inactive.

Prevents reverse current flow. Feedback resistors (286) (298) are oscillate with feedback. The bias voltage is applied from line (284) to resistor (3 02). The reference resistor (304) transfers the current to the transistor (306) (30g) base.

LED control device depending on the availability of auxiliary power from outside.

Operate the LED at two different brightness levels.

If auxiliary power is available, the current passes through transistors (306) (308) and supplies power to the LED (276).

If auxiliary power is not available, the transistor (306) Since it conducts at the current level, the brightness level of the LED (276) will be quite low.

■Assuming that +power and Aux+power are obtained, the voltage level of the reference resistor (304) When the level decreases, both transistors (306) and (308) go into saturation. Become.

FIG. 12 is a schematic diagram of the data manipulation device (100).

The switching signal from the state logic controller (98) is applied to the data manipulation device (100). data transmitted through the linear vibrator (92) and fiber transmitter (96). control the data channels. The switching control signal is for switching between AFs, switching between BFs, and A It consists of a B-to-B switching signal.

As shown in FIG. 12, the three types of switching control signals are data in A, data in B and data in F signal is applied to the data manipulation device (100).

The data signal and switching control signal are transmitted through six AND gates (314) (316) ( 31g) (320) (322) and (324).

The output of the AND gate is sent to the OR gates (326), (328) and (330). applied to the Data Out A, Data Out B or Fiber Data Out signals. Form. The switching control signal is a full-duplex data manipulation device! Start at the output end of (100) Select the data channel to use.

For example, when the AB switching signal is activated, data in A becomes data out B, and Data in B is connected to data out A. Data out A and data out The data out B channel is applied with linear vibration (92), while the data out F signal is The signal is applied to the encoder/fiber receiver (96), and the optical fiber output cable (Transmission light guide) (102).

FIG. 13 shows the channel of the linear vibrator (92).

The linear vibrator (92) outputs 5 R5232 outputs from 5 CMO3 inputs. The O5 input to this C is data out A, data out B, ready out A, ready. They are composed of the ready-out B and ready-out bridge signals, respectively, as shown in Fig. 13. channel. Data and ready signals are exciter Applied to the input line (33, 2) to activate the CMOS switch (334) . When the input line (332) goes high, the CMOS switch (334) switches to the first It is connected to a positive voltage source (336) as shown in Figure 3, but in the case of a low level, it is connected to a negative voltage source (336). Connected to voltage source (33g).

Depending on the voltage level obtained with the positive voltage @ (336) and the negative voltage source (338) , the current passes through the current limiting resistors (340) and (342) and reaches the output terminal (344). ) to form the R5232 voltage level and impedance.

Voltage sources (336) and (338) provide the excitation power required for R3232 communication. Can be done. The diode (346) (34g) is the voltage level at the output terminal (344). protection from

The line-excited circuit (92) operates in two different sources depending on the availability of external auxiliary power. operates with ground impedance.

If external auxiliary power is available, the output tooth impedance will be approximately 1.4 If it cannot be obtained, it will be affected by the action of resistors (354) and (356). , increases to approximately 3.2 ohms.

Diodes (358) (360) are used as auxiliary voltages when auxiliary voltage is not available. If the source is isolated, but available, the amount of power delivered to the entire R5232 output is Limited according to impedance changes.

Figure 14 is an encoder fiber transmitter! (96) is a schematic diagram.

This device uses transition encoding to convert fiber-optic interface devices (1 The CMO5 logic signal output from 0) is encoded into a transition code and sent to the transmitting circuit ( 362).

If new data is not obtained, the marking signal is Mark 1/Mark 2 oscillation 59 (364) into the fiber optic cable. optical fiber The data signal is sent from the data manipulation device (100) to the encoder/fiber transmitter. from the input end (366) of the position (96) to the edge detector (368) and the latch (3 72).

Edge detector (368) detects data transition pulses that transition from positive to negative and from negative to positive. generates a Each pulse is a one-shot pulse that produces a pulse lasting 6 microseconds. Activate the multivibrator (370).

The latch (372) latches the data at the input end (374) after 6 microseconds have elapsed. and a low level or high level signal indicating a logic 1 or 0 from the output terminal (376). produces a corresponding output consisting of .

A logic 1 or 0 is then coded as a single pulse (logic 1) or a double pulse (logic 0). After being coded, it is sent to transmitter # (362) and transmitted via optical fiber cable. be done.

A one-shot multivibrator is one in which pulses are generated faster than 6 microseconds. Make sure there is no such thing. Edge detector.

A latch is applied to the one-shot latch (372) to cause positive-to-negative and negative-to-positive transitions. switch.

Mark 1/Mark 2 oscillator (364) inputs @ (380) (7) to-i By the mint Fl signal or the transmit F2 signal at the input terminal C384> Operates at a selected speed determined.

The adder circuit receives the mark 1/mark 2 oscillation signal and the data at the output terminal (366). The data level change is transmitted to the multivibrator (370). State logic control bag! (98) generates the transmit F1 and F2 signals and the transmit circuit (362) determines the repetition rate of the idle pulses transmitted.

That is, if there is no activity signal on the fiber optic data output line (366) , the last level is repeated at Mark ] or Mark 2 speed.

FIG. 15 is a schematic diagram of the transmitting circuit (362).

The encoded fiber optic signal is transferred from the encoder fiber transmitter circuit to an electric field trigger. Applied to the gate of transistor (384).

A current limiting resistor (380) is connected between the voltage source and the infrared LED (382). It's been nine in a row. When a coded pulse enters the input terminal (386), the field transistor (384) becomes conductive, current flows through LED (382), and it emits light.

forked fiber The present invention enables efficient integration of optical fiber main functions. reconfigurable Uses functional and integrated optical fiber assemblies.

A typical conventional fiber optic interconnect device includes a variety of active (electronic) and passive (optical) devices. (optical) elements are used.

Active elements include a transmitter that emits modulated light and a receiver that performs light analysis. passive As an element, it guides and combines light.

There are orientation, optical fibers (cables), connectors and couplers.

A connector is a means of disconnecting a fiber optic cable from other active or passive components. However, commercially available connectors such as ferrules can be used. The coupler can be active or couples light from passive elements to other active or passive elements.

The number of active elements in the transmission line is determined by optical discontinuities (e.g. glass-air interface), optical depends on the amount of light loss due to divergent absorption, and mechanical misalignment.

The fewer the number of individual elements, the lower the device losses, Wi noise and cost.

According to the present invention, the number of individual elements is reduced by physically integrating the following functions; As a result, losses, complexity and costs are reduced.

Therefore, the present invention uses a coupler/connector combination device that can integrate the following functions: Using subassembly equipment.

1. Transmission: Emission of emitted light from a transmitting device to a fiber.

2. Reception: Routing of light to the detector.

3. Splitting the transmission light in two directions.

4. Coupling; unification of several optical transmission lines.

5. Reconfiguration: Sudden remodeling due to interruptions in transmission lines, etc., or gradual remodeling due to adjustments, etc.

6. Feedback: Partially transmitted light for monitoring, self-alignment or self-testing purposes. @ Line wrapping, feed) < The tsuku function is attached to the reconfiguration function.

In order to achieve the desired function according to the present invention, fibers and groups of fibers are arranged opposite each other. At the same time, by placing it in contact with the active element, the light is appropriately guided to the fiber, and other transmission between the fiber and the active device.

Reconfiguration can be achieved by relatively moving these fibers and fiber groups. fiber end The parts are aligned and abutted against each other to transmit light into the fiber.

The gap between the facing fiber ends may be filled with air, recoating material, index matching material, optical material, or Fill with these combinations. The space between the parallel group nophifers is Fill with stripping material.

Next, an overview of the implementation of the above functions will be explained.

For the sending function, the face of one or several fibers is placed against the transmitting device. light Fibers can efficiently transmit light at the IR frequencies mentioned above, so they are suitable for transmitting equipment. A light emitting diode (e.g. 820 nanometers) with a suitable wavelength (e.g. 820 nanometers) LED) is suitable.

Microlens devices with condensing spheres are particularly effective at transmitting light through optical fibers. do. Also, windowed (sealed) or windowless active devices can be used.

Surround the exposed fiber end with recoating material and align it to deliver the desired amount of light. Bell.

For the receiving function, one or more fibers should be configured with a PIN photodiode. Align the fiber with the optical detector when the detection chip is exposed. The space between the container and the container is filled with refractive index matching material and conformal material.

For splitting functions, the fiber or group of fibers must be connected to at least two other fibers. The light emitted from the former fiber or group of fibers passes through the latter fiber. Let it pass between. Along with using fibers of different diameters.

Changing the position results in various division ratios.

For coupling functions, it is possible to change the group of fibers of the active element or the relative position between the fibers. The pattern of light transmitted between the fiber group or the fiber and the active element is determined by change. The changes may be binary, i.e. on/off or over a range of split ratios, for example. For example, if you want to place connectors relative to each other, manually , or automatically by an electrical actuator.

In the case of feedback function, by dividing a part of the transmission signal, one output Connect the power fiber to the local receiver.

Multiple fiber optic interfaces using a single fiber link cable Attire! Two-way communication between I (10). As shown in Figure 5, each interface device The position (10) includes an optical fiber input light guide line (95) and an optical fiber output light guide line (1 02). Data transmission with one fiber optic cable, input One optical fiber link cable connects the four light beams (95) and the output light guide line (102). join to.

The present invention combines an asymmetric bidirectional Y-coupling device into a commercially available fiber optic connector ferrule. In combination with a single device, attenuation due to light guiding coupling and reflection Reduce.

The present invention coats each glass fiber with a recoating or mode stripping medium. Along with enclosing fiber optic interface equipment ferrules and single optical fiber bars position the link cable ferrules accurately in the longitudinal direction. , the combined coupling is achieved by providing a predetermined separation gap between the fiber ends. Reduces reflections at the interface between the device and the connector.

For each glass fiber, peeled glass fiber with soft taratu ring, It can be constructed of intact glass fiber with hard ring, or a combination thereof.

A coupler, such as an asymmetric bidirectional coupler/connector according to the present invention, in which nine groups of fiber guide lines are combined. When assembled within 4°, the packing ratio is used to define the effectiveness of the coupler. , the reception of the core wire in the coupler plane for the total area over which the light falls or is transmitted, or the light transmission It is the ratio of the feeding area.

As the distance between adjacent fibers increases, the packing ratio decreases and the light guided to the fibers decreases. Decrease. For best packing efficiency, strip the crushing and close the light guide core. Although it is desirable to have the wires airtightly matched, if they are placed so closely together, light may leak from between the core wires. Excessive reflection into the input light guide.

4 to 15 percent of the core diameter, at least 30 percent for optimal results. Separate the core wires with a crushing having a thickness corresponding to:

In addition, the gap between the coupler surfaces, i.e., the longitudinal direction between the light guide and the link cable. It is necessary to consider the interval between 12 Allowances are for gap dimensions and fiber related to diameter.

If the gap is narrow, most of the reflected light will return to the 9-element output light guide.

As the clearance increases, a significant amount of reflected light reaches the input light guide and ultimately It is transmitted via a link cable.

Figure 32 shows the relative forward attenuation and reflection of a bidirectional fiber link and a coupler. 3 is a graph showing the relationship between the gap width and the link cable surface.

Each tested link consisted of a 200 micron long PCS cable.

It is terminated as shown in FIG. 30 and end connected to a bidirectional coupler.

Using a calibrated LED transmitter, a fixed amount of light is applied to the transmitting light guide at the near end of the link. As well as transmitting light, the received power is measured from the receiving light guide at the far end of the link. Ta. The reflected power was simultaneously read from the receiving light guide of the far end coupler. Dual herad photoda One reading was taken using an Inmodel 22 XLD optical fiber multimeter.

Two experimental "rewrapping" couplers configured as shown in FIG. 19 and FIG. We tested two experimental “mode stripping” couplers configured as shown in I did it.

The following four types of link shapes were measured.

(1) A 1 kilometer long link with two "recover" couplers at each end; (2) A 30 meter (100 ft) long ring flanking two “recover” couplers. nine: (3) 1-kilometer-long link with two r-mode stripping couplers ; (4) 30 meters (100 frames) with two [mode stripping] combiners; Eat) long link.

Each link was measured twice in both directions and the four readings were averaged.

In Figure 32, the function (550) has a 1 micron gap (=OdB). for the signal output measured by Signal received on 1 km “recover” link It explains the effect of the near-end gap (between the transmit coupler and the link cable) in , for gaps of 10 to 50 microns, the average level is 10 JdB; If the gap becomes wider than this, the signal level will drop.

Function (552) shows the effect of the far end gap, measured under the same conditions.

The function (554) is the function (SSO) for the reflection at 1 micron (=O(IB) This is the amount of near-end reflection measured at the same time.

The function (554') decreases by one reflection as the gap widens beyond 50 microns. It shows that it will increase.

Function (556) is for a 1 km long link (=0 dB) with a 1 micron gap. Ru. Reception on a 30 meter (100 ft) long link using a “reclad” coupler. The relationship between the received signal energy and the near-end gap is shown.

Function (55g) was measured simultaneously with function (556). Using a “recoat” coupler Ta. This is the near end reflection of a 30 meter (100 ft) long link.

For near-end gaps of 5 to 40 microns, the reflection is constant and per kilometer. For short links, the reflection from the far end of the cable is approximately 3 dB higher than the reflection from the link. In addition, the measured reflection at the near end is expected to be high.

Function (560) was measured under the same conditions as function (SSO). "Mode Strippi" It is equipped with a coupling J coupler. This is the reception amount for a 1 kilometer long link.

Function (562) is "mode stripping" measured simultaneously with function (560). This is the amount of reflection from a 1 kilometer long link with a coupler.

Function (564) uses a ``mode-stripping'' combiner to 100 feet) is the amount received on the long link and contributes to the short link loss. modestri This was measured in order to confirm the pinging effect (see the table below).

These results indicate that it is desirable to maintain close clearances in the range of 5 to 40 microns. I found out.

Figure 32 shows that the baseline reflection from a short 30 meter (100 ft) cable is long. This shows that it is about 3 dB higher than the cable. This is the amount of light coming from the far end of the cable. This is caused by reflection, and the shorter the cable, the more noticeable it is.

The above effects can be controlled to some extent by limiting the minimum attenuation that can be obtained with the shortest cable. . Customer interconnect requirements range from 30 meters (100 feet) to 1 kilometer. However, this is the scope of the present invention using a targeted silica core cable.

30 meters using a medium with more loss than this, such as plastic core cable. It is possible to maintain appropriate return loss for extremely short links of 100 feet or less. Ru.

Furthermore, reflection can be controlled by separating and matching the opposing surfaces and finishing them. , since the link operates bidirectionally, the ground separation gap at both ends must be the same. It is necessary to

By appropriately selecting the surface roughness of both the far and near end faces as shown below, short cables can be The total amount of reflection can be maintained at an appropriate level even in the case of

By coarsely polishing with 3 micron abrasive paper to obtain the desired surface roughness. By adjusting the angle to reflect the transmitted radiation from the end face of the link cable, high-level It is thought that a 1-code is generated and the internal reflection of the link cable is reduced.

These higher mode reflected lights have a large angle of incidence on the link cable surface, so When passing through a cable, it attenuates rapidly in proportion to the angle of incidence.

Furthermore, by surrounding part of the light guide with a mode stripping medium, the reflection You can control the radiation. Light is distinguished by its trajectory and the angle between it and the direction of the light guide. Diverse model The beam is propagated through a large core light guide.

The zero mode is a mode that propagates along the axis of the light guide. The highest mode is 2 Because the finish of one surface, which is the core surface close to the critical angle of total white reflection, is incomplete. Therefore, the higher mode light leaks into the crazink and is absorbed. After a few hundred meters, the best mode is almost eliminated from the link cable.

Mode stripping is achieved by reducing the thickness of the Crazinc to create a material with a higher refractive index than the Crazink. By surrounding it with light absorbing material.

This is a process that promotes removal of high-level modes in a short section of the light guide, and the above light absorbing material is , called a mode stripping medium.

Mode stripping is easy to leak from light guide to light guide, and may even affect the entire length of the longest link. The aim is to remove the above-mentioned higher mode light from the coupler, which does not contribute much to the transmission to the body. target

Mode stripping is 1 usually the process of removing the higher-order modes that carry light down a short cable. As a result, short link loss increases.

The following table shows the effect of mode stripping according to the present invention. In addition to the signal power range between the shortest and longest links, the amount of reflection is also suitably reduced.

Mode stripping Received power Dynamic range Reflection/lkj30w ( 100ft) 1lui None -1 Seki Ps -2 ExlBa 1 threshold -41d - Yes -1&lBa+ -7 7Bm Myanmar-4-again. Use of index-matched materials in coupler/connector combinations Make sure that the planes of the link cable and the light guide are parallel and perpendicular to the coax. uni, to make the two consistent.

In addition to selecting link cables with minimum design attenuation, Polishing the barinfucadal reduces the reflected signal strength.

Mechanically attaching a fiber optic guide with fluoropolymer stretch tubing allows the fiber to Optical coupling efficiency is increased by ensuring alignment and preventing light divergence.

Using optical coupling gel, it is possible to match the refractive index of the light guide and the 18 transmitting/receiving circuits. Wear.

FIG. 16 shows a subassembly device (390) and a transmitter/receiver panel (392).

splice bushing (394), fiber link cable end (396) and and optical fiber link cable (39+1).

The subassembly flfffi (390) is a subassembly ferrule (40 2) and a screw coupling cap (404). A data combination system (400) is used.

Three light guide lines (406) are installed in the subassembly ferrule (402). Therefore, the coupler/connector combination device (400) is a subassembly device [( 390) to the fiber optic link cable (398), and 1 Asymmetrical bidirectional transmitting and receiving signals of optical fiber link cable (39g) It functions as a coupler that acts as a Y-coupler.

Coupler/Connector (400), Splice Bushing (394) and Optical Fiber The bar link cable end (396) connects the three optical fiber light guide lines (406) to the optical fiber. Position it to align with the Eyeverlink cable (398).

The splice bushings (394) each have a subassembly ferrule (4). 02) and the taber (412) (414) of the link ferrule (410). It has a matching tab.

Gaps (404) and (408) are connected to the subassembly ferrule with appropriate tension. (402) and link ferrule (410) to the splice bushing (39). 4) By positioning and holding the optical fiber link cable (39g) and Fiber guide light 4! (406) to ensure axial angular alignment.

The end of the fiber optic light guide (406) and the end of the fiber optic link cable (398) When the parts are angularly aligned in the axial direction, the subassembly ferrule (402) - link Transmission and reception losses across the air gap between the ferrules (410) are minimized.

This is caused by the fiber end coming into contact with the fiber surface and damaging it. Connect the link cable (39B) properly while maintaining a distance to prevent damage to the core wires. In order to ensure good optical energy coupling, for example, 40 microns for a 110 micron light guide. It's called Kron. Maintain an appropriate spacing equivalent to approximately half or less of the core diameter of the smallest light guide. You need one.

Otherwise, the optical coupling efficiency will decrease.

End of subassembly ferrule (402) and link ferrule (410) Nine double ferrules and splice bushings ( 394) to a predetermined tolerance.

In the present invention, the ferrule is 6.26±o, oos mm, and the splice bushing is A suitable result was obtained by grinding to 12.545±0.005 mm.

In addition, by making the splice bushing circular, Large tolerances on plastic parts can be eliminated.

Therefore, the preferred separation gap obtained by the present invention is (12545±5)-2x (6260±5)=25±15 microns.

To increase the optical coupling efficiency, use an optical coupling gate with a high refractive index in the optical fiber link cable. A ferrule is used between the ends of ferrules (402) and (410). in this way This reduces reflection loss at the air/glass interface of the link cable (398).

The optical fiber light guide (406) is attached to the subassembly ferrule (402) in the following manner. ), and the cable sleeve (416) surrounds the light guide (406). Both are attached to the ferrule neck (418).

Cable sleeve (416), ferrule neck (418) and flange (42) A telescoping tube (420) surrounding 4) eliminates strain.

The expansion tube (420) is heated to create a strain relief filler ( 422) and the ferrule neck (418).

The strain relief filler (422) is designed to completely eliminate strain within the enclosure. directly adhered to the Ibain interface enclosure.

i.e. other than the coupler/connector (400) or subassembly device (390). The force applied to the part is transferred from the strain relief filler (422) to the strain relief protrusion (42 4) to the fiber optic interface enclosure. (402) to prevent distortions that would cause vertical displacement of the light guide (406).

In addition, since the sleeve (416) is attached to the strain relief filler (422), , subassembly W (390), or optical fiber link cable end (39 6) and the link cable (39g), straining the light guide (406). It is also excluded.

A fiber optic light guide (406) passes through the cable sleeve (416).

The receive light guide (426) separates from the transmit light guide (428) at the cable sleeve termination point. Separated. The receiving light guide (426) and the transmitting light guide (428) are each and passes through sleeves (430) and (432).

Connect the telescopic tube (434) to the outside of the cable sleeve (416) (430) (432) Eliminate strain between each sleeve member by placing it around the surface and heating it .

The receiving light guide (426) and cable sleeve (430) are connected to the receiving assembly (4 36), and what are the transmission light guide (42B) and cable sleeve (432)? , connected to transmitting assembly (438). Receiver assembly (436) and transmitter The communication assembly (438) is mounted on the motherboard within the fiber optic interface enclosure. It is connected to the received sending/receiving gl (392).

FIG. 17 is a schematic diagram showing the components of one representative fiber optic link cable.

Fiber-optic link cables are made of clar-link (44 2) consists of a glass fiber core g (440).

Clarinck (442) has a smaller refractive index than glass fiber (442) Because it is composed of a material, light can be transmitted at any angle between the critical angle and the fiber surface. When the core collides with the interface between the wire and the Clarinck, the glass fiber (240) is running. All light is internally reflected.

In the present invention, the diameter of the core wire (440) can be changed depending on the application. The fiber light guide fi (406) has a glass fiber core wire with a diameter of approximately 110 microns. On the other hand, fiber optic link cable (398) has a diameter of approximately 200 microns. It has a lath fiber core.

With such diameter dimensions, the splice bushing (394) can be attached to the ferrule (4). 10) and (402), the glass fiber of the light guide (406) Easily connect core wire and glass fiber core wire of optical fiber link cable (39g) Can be matched.

According to the present invention, the outer diameter of the clarinck (442) surrounding the light guide (406) is Approximately 125 microns, the straight line of the Clarinck that surrounds the Link cable (39&) The diameter is approximately 330 microns.

With the above diameter dimensions, three light guide lines (40 6), 110 micron glass core wire, 200 micron link cable (39B) The long glass core wire can be substantially covered.

The buffer (444) surrounds the clarinck (242) and protects it from wear and other damage. The inner tube (445) is an additional protective layer. Ru.

The reinforcing member (446) is preferably constructed of a braided material made of polyamide plastic. This strengthens the glass fiber (440) and reduces strain on the glass fiber (440).

The outer jacket (44g) consists of a PVC protective layer that protects one reinforcing member (446). has been completed.

Optical fibers are all-glass fibers, or glass-on-glass, and plastic-coated It can be constructed of silica (PCS) and plastic fibers.

In the present invention, a plastic-coated silica fiber is used, and the refractive index is 1.4. 6 fused silica core wire and a thickness equivalent to approximately 30% of the core wire diameter of the PCS fiber. Equipped with RTU type silicon elastomer resin.

As shown in FIG. 18, the optical fiber guide of the subassembly ferrule (402) When arranging adjacent core wires of other light guide wires in close proximity, such as in wire assemblies, use soft parallel wires. The coating can be stripped from the core and recoated.

In order to focus the light guiding lines into a narrowly spaced shape and achieve the optical coupling effect featured in the present invention, The lagging material corresponds to 4 to 15% of the optical fiber core diameter, but does not exceed 30%. It needs to be thick.

The thicker the Clarinck, the more space it takes up and the less effective the packing is. Besides that therefore, they must be coupled to larger diameter and less efficient fiber optic cables. , if the claring is thick, a sufficient optical coupling effect cannot be obtained.

Figure 18 shows the optical fiber of the subassembly ferrule (402) (see Figure 16). FIG. 4 is a schematic diagram of a fiber light guide (406) assembly.

When forming a subassembly, three light guide lines (406) are connected to the first Between the subassembly ferrule (412) and the transmitter/receiver board (392) shown in Figure 6 distance).

Each light guide (406) has a light guide formed concentrically around it. It has a core wire. Claring preserves the light trapped in the core by total internal reflection. Hold and the result.

The refractive index of the Claring is less than or equal to the core of the light guide (406).

The light guide is a commercially available one equipped with a protective buffer tube (444), and one type teeth. The optical cryo-ring is constructed of RTV silicon type material. Also, glass Some have a hard claring material layer between the core wire and the silicon claring. In any case, when focusing the light guide, the buffer (444) Remove conclave rings.

Glass fiber (440) has a high purity and should be protected after being exposed to the atmosphere. Needs to be moistened. In this case, after cutting each fiber, soak it in a recoating solution to remove moisture. Prevents absorption and deterioration.

The recoating solution preferably contains about 26% ginal, 74% acetone and trace amounts of potassium. It is a solution consisting of recarbonate.

It is commercially available. Coating the optical fiber leads to a sharp decrease in the refractive index of 8. This is to enable light to be guided by the core wire.

When stripping the crackling and terminating or focusing the optical fiber, recoat the core. Therefore, it is necessary to prevent optical loss.

Fluoropolymers such as TFE (Teflon) are heat-shrinkable tube-shaped.

Forming a low refractive index layer around the core wire to reduce light divergence allows light to flow through the optical fiber. Make it possible to pass through the core wire.

Subassembly ferrule (402), receiving assembly (436) and transmitting assembly The length of the fiber required between the assembly (43g) (see Figure 16) is as follows: Measure and divide at the end of the transmitter/receiver assembly.

In Figure 18, a recoating material (450) is applied to the optical fiber guide (406). Then, attach a 2-fluoroboromer (TFE) heat shrink tube (452) such as Teflon to the light guide. (406) Installed above the end to hold the light guide (406) in a narrowly spaced triangular shape. Ru. These triangular shapes automatically self-center within the subassembly ferrule. form a free-standing structure with an external area of

The soft re-covering material (450) is a light guide in the heat-shrinking tube (452) (see Figure 20). (406) to accommodate compression of the shrink tube (452).

By creating a free-standing triangular shape, the spacing between the fibers can be reduced to prevent self-cutting movement or misalignment. A machine that can be shaped into a pile. The heat shrink tube (452) not only holds the optical fiber guide wires in a triangular shape with narrow spacing, but also Since it has a lower refractive index than the glass fiber (440) core wire, the recoating material (450 ) to keep the light transmitted and received by the light guide (406) in the axial direction.

Heat shrink tube (452) % After attaching to the light guide (406), heat shrink tube (452) @ By installing additional fluoropolymer heat shrink tubing (454) between the sections, Please support the assembly.

FIG. 19 shows the subassembly attached to the ferrule (402). Figure 18 The fiber assembly is shown.

Until the heat shrink tube (454) comes into contact with the contact surface (460) of the opening (45g), The fiber assembly of FIG. 18 is inserted into the subassembly ferrule (452) opening. (458).

The glass fiber and recoating material are bonded together so that the heat shrink tube (454) abuts the abutment surface (460). slightly extending from the end face (461) of the subassembly ferrule (402) at the point where are doing. Due to the closely spaced triangular shape, the fiber optic assembly Take initiative within the rules (402).

After installing the optical fiber assembly into the subassembly ferrule (402), A syringe is used to insert a low viscosity epoxy into the cavity of the opening (458), but a commercially available low viscosity epoxy is used. A degree-curing epoxy resin is suitable.

After the epoxy has cured, remove it from the end of the subassembly ferrule (402). The exposed glass fiber wire and the recoating material (450) are removed by air abrasive cutting. .

The entire assembly shown in Figure 19 was then stress relieved for 48 hours and epoxied. By completely curing the fiber, piston movement of the optical fiber light guide is prevented. .

Next, install the end surface of this 7 subassembly ferrule (402) onto the turntable. It was arrived. The rough surface is polished with a 15 micron polishing plate, etc. In this case, a 6.3 mm long Use polished bushings.

Next, use a 6.26 mm polished bushing to attach the ferrule end face to 3 microns. Final polishing with a polishing plate 9 Next, clean the entire surface with nitrogen and remove the sub-assembly fel. Place a dust cap on the end of the roll (402).

Pass the light guide (406) through the cable sleeve (416) as shown in Figure 16. , shrink tube (420), cable sleeve (416i), ferrule neck (41 8), strain filler (422), and shrink tube (4) to be placed over the flange (424). 20), the adhesive on its inner surface melts and the ferrule neck (418) and Glue to flange (424).

Next, the reception light guide (426) is separated from the transmission light guide (42g), and each light guide Cover with cable sleeves (430) and (432).

Connect the shrink tube (434) to the cable sleeve (416) (430) (43) as described above. 2) to prevent distortion. Apply a small amount of adhesive to the cable sleeve (430 ) (432) at the end and connect the optical fiber light guide (406) to the cable sleeve. (430) (432).

FIG. 20 is an end view of subassembly ferrule (402).

As shown in the figure, an opening (458) is formed on the fourth surface (460) to guide light. A line (406) is laid inside it. Fluoropolymer heat shrink tubing (452 ) are closely spaced triangular shapes so that the glass fibers are aligned in the center of the opening (458). 1 mechanically aligned. The remaining space around the light guide (406) is filled with re-covering material (4). 50).

In this way, it is made into a triangular shape with narrow intervals, and it is also made into a suitable shape to fit into the opening (45g). It has a suitable cross-sectional thickness. By using fluoropolymer heat shrink tubing (452) and can be properly aligned. Epoxy (462) can be used with glass fiber Recladding material (450) is held in place on subassembly ferrule (402). .

By using a light guiding wire in which the light guiding glass core wire is coated with a hard cradling material, it is possible to It can be assembled according to the instructions. In this case, the protection buffer (444) and the silicon The core wire is separated from the cladding material, but as shown in Figure 21, the core wire is covered with a hard cladding layer. There is no need to re-coat the light guide as it is well protected.

In the present invention, the diameter of the light guiding core wire is approximately 110 microns, and the thickness of the hard flap is approximately 7 microns. A micron hard coated optical fiber light guide is used.

When the clasping is thinned in this way, some of the high angle incident light is Leak through the boundaries between. Such a high-angle incident beam will result in higher modes of optical propagation. These are known as glass/air/gas in coupler/connector combination devices. The boundary between the laths contributes to the retroreflection of light.

If the light guide is surrounded by a light-absorbing medium for a sufficient length, mode stripping is recommended. Ping eliminates leakage high-level modes and removes the coupler/connector subassembly. (400) reflectance decreases.

FIG. 21 shows that the mode stripping medium is added to the subassembly ferrule (402). One alternative assembly with a body. Protection buffer (444) and silicon clary and the hard coated light guide to expose approximately 13 aua (1/2 inch) of hard coated light guide. It is.

A light guide consisting of a glass fiber core wire and a hard clarine ring (443) is It is held in a narrowly spaced triangular shape using a heat shrink tube (445) made of plastic, and a commercially available black box is used. is an epoxy compound. Subassembly packed with mode stripping media It is introduced into the bripherule (402).

The three light guide wires are made slightly longer so that they protrude from the end of the ferrule. , in this case the centering operation is continued until the mode stripping medium (447) is cured. The light guide is held in place by the rifice.

Once the mode stripping medium has cured, air abrasive cutting removes any excess light guiding wire. , mode stripping medium and excise. For other processes, see the actual diagram in Figure 18. It is the same as the example.

Figure 22 shows the subassembly frame assembled with mode stripping media (447). Figure 4 is an end view of the ferrule (402), showing the space around and between the hard craling (449); The pace is good with mode stripping medium.

FIG. 22 further shows the hard grating (449) force t glass fiber core wire (45 1).

Figures 23 to 25 show the strain relief filler (422).

Figure 23 shows how the strain relief protrusion (424) protrudes from the vertical portion (464). FIG. 3 is a top view of the strain relief filler metal.

As shown in FIG. 25, the horizontal part (466) is approximately perpendicular to the vertical part (464). It is joined.

FIG. 24 shows the heat shrink tube (420) formed on the vertical portion (464) and attached to the flange (4 24), the optical fiber light guide (406) and the cable sleeve (416) ) is shown to hold the opening (468) fixed.

FIG. 26 is an exploded cross-sectional view of the components of receiver assembly (436).

As shown in the figure, the receiving assembly (436) receives the IR radiation transmitted by the receiving light guide. It consists of a PIN diode that detects. PIN diode (470) , mounted on a standard TO-18 base having a predetermined outer diameter.

The brass sleeve (472) can be installed above the outer surface of the PIN diode (470). It has an inner diameter such that Similarly, the brass sleeve (472) is shown in FIG. It has an outer diameter that fits into the inner diameter of one quartz tube (474) in the same way.

FIG. 27 is a top view of the PIN diode (470).

A detection surface (476) is arranged on the top of the P I N diode top surface (47g). There is. The detection surface (476) of the PIN diode (470) opens directly to the outside air. As shown in FIG. Ru.

FIG. 27 further shows that a reception light guide (426) is installed around the detection surface (476). It shows you how to do it. Fluoropolymer heat shrink tubing (482) is used as a receiving light guide. Hold the wire tightly adjacent the end of (426).

The receiving light guide (426) is aligned in the longitudinal direction of the detection surface (476).

By centering the plane, the receiving fiber (426) is directed to the detection plane (476). , transmitting the maximum amount of light. Heat shrink tube (482) prevents light divergence and increases light coupling efficiency. Increase.

FIG. 28 is a side cross-sectional view of receiving assembly (436).

On the top surface (47g) of the PIN diode adjacent to the detection surface (476), there is a A light coupling gel (484) with a refractive index of up to 1.5 is placed A typical photogel is a rigid dielectric gel with a refractive index of about 1.407.

Optical coupling gel (484) couples light between refractive indexes that approximate the receiving fiber (476). It is a silicone gel designed to increase the coupling efficiency, and is used to increase the coupling efficiency between the receiving light guide and the detection surface. It is a conformal coating that fills the air gap.

The reception light guide (426) is arranged on the detection surface (476) as shown in FIG. The 1g8 external wire (tltj) curing adhesive (4116) is formed by a quartz tube (474) It is kept in a tank.

Representative UU curing adhesives suitable for the present invention include those currently used in optical devices. is included. The adhesive (486) protrudes from the top of the quartz tube (474) and The lower part of the sleeve (430) is fixed to ensure secure assembly. .

When properly positioning the receiving fiber (426) in the receiving assembly (436), UV radiation is applied to the υU curing adhesive (486) to attach the receiving fiber and cable slit. and a receiver assembly (436).

FIG. 29 is a schematic cross-sectional view of transmitting assembly (438).

The transmitter assembly (438) includes a light emitting laser that transmits infrared light at approximately 820 nanometers. Image (480) is used.

The support structure for the LED (480) is the same as the receiver assembly (436) of FIG. The sleeve is surrounded by a brass sleeve (492).

Surrounded by a quartz sleeve (494). In addition, 1 quartz sleeve (494) , a light-coupling gel (496) is included to increase light-coupling efficiency.

The transmitting and receiving light guide (428) is aligned with the light concentrator (500).

It is installed on the optical window (499) and maintains the balance between transmitted light and reflected light.

For proper placement, the transmission fiber (428) and cable sleeve (432) must be are fixed with UU curing adhesive (498). Instead of light coupling gel (496), light Transparent flicker-curing adhesives can be used that have a refractive index that increases bonding efficiency.

Form a suitable surface for transmitting and receiving data via transmitting and receiving light guides (428) (426). To achieve this, the fiber end is cut in a specific manner to form a smooth vertical end surface. There is a need to. This applies a predetermined bending moment and a predetermined strain to each light guide. This is achieved by

Next, make a notch in the glass core wire along the outer surface facing toward the core.

By forming a crack that extends through the fiber, an intact surface is created. fire The curve spreads at a predetermined speed depending on the strain and bending moment, and the imperfection of one divided surface increases. Prevent preparations.

The method for assembling the receiving assembly (436) and transmitting assembly (43g) is as follows: This is called the Goutere method, and the receiving light guide RIA (426) is connected to a PIN diode (470 ) * Data transmission 7 Aiha (42g) Matched with condensing device 1 (500) let It consists of a 5-axis positioning device. Requires micro-positioning device.

The reception light guide (426) is aligned in the longitudinal direction of the detection surface (476).

Position to read the maximum output of the PIN diode (470).

Assemble the receiving assembly (436) first, then the transmitting assembly (438). stand up Subassembly coupler/connector (400) number! as a result of reflection at combiner/connector (40) while keeping the output of the receiver assembly (436) to a minimum. 0), the transmission light guides (428) are aligned sequentially.

During the manufacturing process, the reflected signal level detected by the receiver assembly (436) is The transmitting light guide (4 2g).

Connect the coupler by polishing both ends of the subassembly link cable (398). l Connector (400), link ferrule (410) and subassembly ferrule at the interface with the rule (402). Light guide wire for transmission (42g) - Light guide wire for reception (4 26) Minimize reflections between.

Final finish with 3 micron abrasive paper and empty fiber optic link cable (39g) The surface is rough enough to diffuse one reflected energy at the air-glass interface.

In addition to finishing the surface in this way, the subassembly ferrule (402) and cage are cable ferrule (410) and high tolerance matching spacing and receiving assembly (436). and transmitter assembly (438) to create an easy-to-handle coupler/connector. With Kuta combination equipment.

Bidirectional optical data communication that is easy to distinguish can be performed simultaneously.

In addition, a link with a minimum design attenuation based on the particular material used or cable length. fiber reception/data detection using a cable and a resistor (224). If the threshold value of the output device (94) is set accurately, the reflected signal of the coupler/connector will be It will no longer be detected as No. 3.

Figure 30 is a schematic diagram of the optical fiber link cable (398) (see Figure 16). Figure 4 is a side view of the optical fiber prior to insertion into the cable ferrule (410); This figure shows how to pre-treat the end of a cable (398).

First, the outer jacket (502), the reinforcing member (504), the inner tube (506), and the Peel the buffer (508) to the appropriate length. In this case, glass fiber (514 ) and peel off the buffer (508) surrounding the clasp.

Next, the glass fiber (514) is immersed in the recoating solution and the buffer (514) is immersed in the recoating solution. 08) is polished with sandpaper to form a rough surface layer.

A fluoropolymer heat shrink tube (510) is attached to a glass fiber tube (508). the end of the bar (514). The tube (510) is heat-shrinked at the point (512). , keep it fixed in proper position. Furthermore, the tube (510) is heated and the glass fiber ( 514) and shrink it to wrap it.

Insert the cable end into the ferrule (410 ).

The glass fiber (514) and the heat shrink tube (510) are connected to the cable ferrule (4). 10) Tie the end of the cable with epoxy using the binding device that slightly protrudes from the end. Glue to the ferrule.

Heat shrink tubing (not shown) is attached to the outer jacket (502) and cable ferrule (4). 10) to remove strain.

The entire device is then placed in an oven to cure.

After curing, remove the protruding fiber from the ferrule tip using air abrasive cutting. Then let it sit for 48 hours to relieve stress until the epoxy is fully cured. Next, grind the ferrule end in the same way as the coupler to make it a mirror-free surface. .

FIG. 31 is a schematic disassembly of an optical fiber interface device (10) according to the present invention. It is a diagram.

This interface device (10) has a wire hinge ( 522) with a protective lid (520) coupled to the enclosure (ri 24). Ru.

It passes through the hole (546) and is attached to the column (544), and is fitted into the recess (1) 49). Enclosure (524) by means of screws (542) covered with labels (54g) faces the base (526).

The subassembly coupler/connector (400) is inserted through the opening (525) into the package. It is arranged in an enclosure (524). Heat the shrink tube (420) as described above to , is fixed to the flange (424) of the strain relief filler (422).

Next, by inserting the filler metal (422) into the opening (527), the filler metal (422) ) is attached to the enclosure (524).

The flange portion (529) is fixedly engaged when expanded forcefully at the opening (527). Ru. In this manner, subassembly (390) is integrally secured to enclosure (524). and removes the strain in the subassembly (390).

Transmit optical data to fiber optic link cable (39B) without significant attenuation An optical fiber is inserted into a circular groove (536) having a predetermined radius of curvature sufficiently large for Insert the cable (39g).

A cable locking device (53g) (540) is formed in the enclosure (524). and engages the fiber optic link cable (398) with the enclosure (, +24). This eliminates strain on the fiber optic link cable end (396).

Each base (526) includes an electronic serial data board, such as an R5232 electronic serial data board. Two plugs (528) and (530) are provided.

The plugs (528) (530) also provide auxiliary power to the interface device (10). It consists of a power plug that supplies power. Therefore, you can install it according to your convenience. Auxiliary power can be provided at either end of the device.

Accordingly, the present invention provides an inexpensive device that operates regardless of the availability of auxiliary power. Optical energy is transmitted through a single fiber link cable at high data rates. We provide optical communication equipment that transmits information in both directions simultaneously.

This system completely eliminates EMI/RFI and maximizes data safety. secure.

By transmitting one operating status signal between fiber optic interface devices, multiple System resources can be shared between user devices.

Simultaneous bidirectional transmission requires an expensive multiplexer for each user equipment. There is no need to

The LED indicator light provides the user with information about the operating status of the device and provides continuity monitoring. It serves the purpose of maintaining the integrity of data transmission.

Prevent eavesdropping and data link interception.

Bridge-connecting devices increases the range available and allows multiple user stations to be networked. It can be made into a network.

Collecting fiber optic cable equipment and integrating it with the fiber optic interface enclosure 5. By using a filler metal that can be Because it can remove.

System reliability and sustainability are increased.

Save money by using standard connector ferrules instead of connectors and couplers. In addition to saving money, the couplers and connections help simplify the system. The combined structure makes it easy to clean and requires minimal maintenance costs.

By using fluoropolymer heat shrink tubing, the end of the optical fiber guide can be Reduces light divergence and allows precise alignment of light guide and link cable .

In addition, by using the cutting and stripping machine recoating solution of the light guide, the light divergence is reduced. , as well as increasing the optical coupling effect.

The integrity of the glass core can be protected.

Using a mode stripping medium in the ferrule can remove higher mode light. Therefore, the amount of one reflection caused by higher modes can be reduced.

The foregoing description of the invention is for purposes of illustration and description and does not describe the invention as disclosed. It is not intended to be limited to the precise form shown, but modifications and variations may be made in light of the above teachings. can do.

The examples serve to illustrate the principles and applications of the invention.

This will enable those skilled in the art to utilize the invention in various embodiments and modifications. be.

The appended claims include other alternative embodiments not limited by the prior art. It is something that

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Claims (1)

[Scope of Claims] (1) An optical fiber coupling device that simultaneously transmits optical signals in both directions using a single optical fiber link cable, which comprises a reception light guide means for receiving an input optical signal, and an output optical signal. A transmitting light guiding means for transmitting a signal, the transmitting/receiving light guiding means and an optical fiber link cable are coupled and connected, and the transmitting/receiving guiding means and the link cable are aligned and vertically separated. Combiner/connector combination means capable of bidirectionally simultaneously optically coupling the input optical signal between the means and the link cable, and the output optical signal between the transmitting light guide means and the link cable. Made of An optical fiber coupling device characterized by: (2) The transmitting/receiving light guide means transmits the output signal and surrounds an optical fiber coated means having a predetermined diameter, and the optical fiber coated means, and transmits the optical signal to the coated fiber means. It can be introduced into The fiber diameter of the optical fiber link cable is minimized by having a thickness sufficiently thick to substantially prevent light leakage and corresponding to 30% or less of the predetermined core diameter. By maintaining a high packing ratio of active area to non-active area of the coupler/connector combination means and optimizing the optical coupling between the transmitting/receiving light guiding means and the link cable, link cave claim 1, characterized in that the link cable comprises creasing means for reducing the number of optical transmission modes of the link cable and increasing the transmission bandwidth and data transmission rate of the optical signal transmitted by the link cable. ). (3) A transmitting/receiving light guide means transmits the optical signal and surrounds an optical fiber coated wire means having a predetermined diameter, and the coated wire means, and transmits the optical signal to the coated wire means. Is it possible to introduce it? By having a thickness corresponding to 4 to 15% of the predetermined core diameter, the core diameter of the link cable is kept to a minimum and the packing ratio of the optical fiber core is maximized; Device according to claim 1, characterized in that it comprises clasping means adapted to minimize leakage between the lines. (4) The apparatus according to claim 3, further comprising a light absorption means that surrounds the cradling means and absorbs a higher mode of the optical signal leaking from the cradling means. (5) Fiber optic link cables have a polished surface with virtually no mirror surface. Device according to claim 1, characterized in that it has a surface forming a plane. (6) A coupler/connector combination means aligns the reception light guide means and the transmission light guide means. Subassembly ferrule means for mating. link ferrule means for aligning the link cable; and a sprocket for aligning the subassembly ferrule means and the link ferrule means. The device according to claim 1, characterized in that it comprises rice bushing means. (7) The lengths of the subassembly ferrule means, the link ferrule means, and the splice bushing means are selected in advance so as to separate the ends of the optical fiber link cable and the optical fiber core means by a predetermined distance in the longitudinal direction. characterized by The device according to claim (6). (8) The receiving light guide means and the transmitting light guide means are maintained in a shape with a narrow interval. and a transmitting and receiving light guide assembly which reduces the light divergence of said coupler/connector combination means. 7. The device according to claim 6, characterized in that it comprises a flashing means. (9) A re-coating, wherein a transmitting and receiving light guiding assembly is formed around the ends of the receiving and transmitting light guiding means. first heat shrink tube means for holding the receive light guide means and the transmit light guide means in a closely spaced triangular shape; and a first heat shrink tube means coupled to the first heat shrink tube means to support the transmit and receive light guide assembly. and additional heat shrink tubing means for strain relief. (10) The subassembly ferrule means and the cable ferrule means are vertically separated by a distance corresponding to approximately one-fourth and one-half or less of the minimum optical fiber core diameter of the transmitting/receiving light guiding means. The device according to claim 9, characterized in that: (11) Optical fiber link cable for bidirectional communication of optical input signals and optical output signals transmitting light guide means for transmitting the optical output signal; and receiving light guide means for receiving the optical input signal. step, angularly aligning the transmitting/receiving light guide means and the optical fiber link cable means in the axial direction; a coupler/connector combination that enables simultaneous bidirectional coupling of the optical input/output signals between the transmitting/receiving light guiding means and the optical fiber link cable; receiving assembly means for detecting said optical input signal and generating an electrical input signal representative of said optical input signal; and transmitting means for generating said optical output signal in response to said electrical output signal. 1. A bidirectional fiber optic communication device comprising a communication assembly means. (12) The receiving assembly means includes: a detecting means for detecting the optical input signal; an optical coupling means for increasing optical coupling efficiency between the detecting means and the receiving light guiding means; and a receiving light guiding means for detecting the receiving light guiding means. 12. The device according to claim 11, further comprising an adhesive means for fixing the device in optical alignment with the device. (13) The receiving assembly means further comprises heat shrinking means disposed around the receiving light guiding means to maintain the receiving light guiding means in a closely spaced configuration. The device according to paragraph (12). (14) Surrounding the receiving light guide means and removing distortion of the receiving light guide means. 14. Apparatus according to claim 13, further comprising receiving light guiding cable sleeve means secured to said adhesive means for release. (15) a transmitting assembly means for generating the optical output signal in response to the electrical output signal; an optical coupling means for increasing the optical coupling efficiency between the transmitting means and the transmitting light guiding means; 12. The apparatus according to claim 11, further comprising adhesive means for fixing the transmitting light guide means in optical alignment with the transmitting means. 16. The apparatus of claim 15, wherein the transmitting assembly means includes means for holding the optical coupling means adjacent to the transmitting means. (17) A transmission light guide cable sleeve means is provided, which is fixed to the adhesive means so as to surround the transmission light guide means and eliminate strain on the transmission light guide means. 16) The device described in item 16). (18) transmitting assembly means comprising: transmitting means for generating the optical output signal in response to the electrical output signal; and fixing the transmitting light guide means in optical alignment with the transmitting means and having a refractive index. The device according to claim 18, further comprising adhesive means that increases the optical coupling efficiency between the transmitting means and the transmitting light guiding means by matching the transmitting means and the transmitting light guiding means. Place. 19. The apparatus of claim 12, wherein the fiber optic link cable means has a polished surface forming a substantially mirror-free surface. (20) A transmitting/receiving light guiding means is cut at an end disposed within the transmitting/receiving assembly means. The device according to claim 12, characterized in that it has a split surface. (21) The coupler/connector combination means includes: subassembly ferrule means for aligning the receiving light guide means and the transmitting light guide means; link ferrule means for aligning the link cable means; and the subassembly ferrule means and the Align cable ferrule means 13. Device according to claim 12, characterized in that it comprises splice bushing means. (22) The subassembly ferrule means, link ferrule means and sprocket The length of the rice bushing means is selected in advance so as to separate the ends of the optical fiber link cable and the optical fiber core means by a predetermined distance in the longitudinal direction. The apparatus according to claim (21), characterized in that: (23) When the receiving light guide means and the transmitting light guide means are held in the shape of a self-supporting triangle with narrow intervals. and a transmitting/receiving light guide assembly for reducing light divergence of said coupler/connector combination means. 22. The apparatus according to claim 21, further comprising a means for resetting the apparatus. (24) The transmitting/receiving light guiding assembly includes: a re-coating material formed around the ends of the receiving light guiding means and the transmitting light guiding means; first heat shrink tubing means for holding a triangular shape; and coupled to the first heat shrink tubing means, the transmitting and receiving light guide assembly 24. Apparatus according to claim 23, characterized in that it comprises additional heat shrink tubing means for supporting the bridge and eliminating strain. (25) The sub-assembly ferrule means and the link ferrule means are vertically separated by a distance corresponding to approximately one-fourth and one-half or less of the minimum optical fiber core diameter of the transmitting/receiving light guiding means. Claim (24) characterized in that equipment. (26) A fiber optic link cable means is arranged within said link cable to has a polished surface that forms a substantially mirror-free surface that produces a high degree of reflected light. The apparatus according to claim (15), characterized in that: 27. The device of claim 15, wherein the transmitting and receiving light guide means has a cut surface at an end disposed within the transmitting and receiving assembly means. (28) The coupler/connector combination means includes: subassembly ferrule means for aligning the front receiving light guide means and transmitting light guide means; link ferrule means for aligning the coupling cable; and the subassembly ferrule means for aligning the coupling cable. , link ferrule means and matching step According to claim (15), the method comprises price pushing means. equipment. (29) Supplement assembly ferrule means, link ferrule means and splices The length of the bushing means is determined by the length of the optical fiber link cable and the optical fiber core wire. 29. The device according to claim 28, wherein the ends of the steps are preselected to provide a predetermined separation in the longitudinal direction. (30) When the receiving light guide means and the transmitting light guide means are held in a self-supporting triangular shape with narrow intervals. Both transmit and receive light guide assemblies reduce the light divergence of the coupler/connector combination device. 29. The device according to claim 28, characterized in that it comprises a flashing means. (31) A recladding material in which a transmitting and receiving fiber assembly is formed around the ends of the receiving light guide means and the transmitting light guide means. a first heat-shrinkable tube means that holds the receiving light guide means and the transmitting light guide means in a narrowly spaced self-supporting triangular shape; Special features include additional heat shrink tubing means to support the bridge and eliminate strain. The apparatus according to claim (30), characterized in that: (32) The subassembly ferrule means and the link ferrule means When disposed in the rice bushing means, the minimum optical fiber of said receiving and transmitting light guide means is The device according to claim 31, characterized in that the fibers are longitudinally spaced apart by a distance corresponding to approximately one-fourth and one-half or less of the fiber diameter. (33) a transmitting assembly means comprising: transmitting means for generating the optical output signal in response to the electrical output signal; optical coupling means for increasing optical coupling efficiency between the transmitting means and the transmitting fiber means; and adhesive means for fixing the transmitting light guide means in optical alignment with the transmitting means. The device according to claim (12), characterized in that: (34) The link cable is inserted into the link ferrule means and is heat-shrinkable. a heat shrink tube that wraps around the buffer portion; link assembly means covering a portion of the link cable means; The apparatus according to claim (21). (35) While being inserted into the link ferrule means, the link is heat-shrinked. Claim 28, further comprising a link assembly means having a heat shrink tube surrounding a buffer portion of the link cable means and extending beyond the buffer and covering a portion of the link cable means. equipment. (36) An optical fiber interface device for connecting a plurality of user devices of a communication circuit network, wherein a ready-in signal issued from the user device and indicating a ready state of the user device and the optical fiber interface device are separated from each other. a fiber activity signal indicative of a data transmission rate of receiving optical pulses from a fiber optic interface device of the user equipment; Generates a status signal indicating the current state. synchronization state means. The electronic output data signal and the ready-out signal are connected to the optical fiber interface. line excitation means for transmitting to at least one user equipment connected to a fiber optic interface device; The optical fiber interface selecting an output data signal for transmission from the electronic output data signal and the coded fiber output data signal in response to the switching signal generated by the synchronization status means; De to do 1. An optical fiber interface device comprising: a controller operating means; (37) An optical fiber interface device connects all users connected to the communication network. Device according to claim 36, characterized in that it is capable of transmitting data received by the device. (38) The device according to claim (36), which is capable of establishing reliable full-duplex communication between any two user devices connected to the communication network. (39) A claim characterized in that an optical fiber interface device is capable of sharing system resources between a user device connected to the interface device and a user device connected to an additional optical fiber interface device. The device according to item (36). (40) The optical fiber interface device performs system communication between a plurality of user devices connected to the interface device and the additional optical fiber interface device. This service is characterized by sharing system resources and enabling full-duplex communication. The device according to item (36). (41) The synchronization state means determines the current state of operation of the optical fiber interface device, and and diagnostic means for indicating a loss of integrity of a fiber optic link cable connecting said fiber optic interface device and an additional fiber optic interface device. . (42) The device according to claim 41, wherein the diagnostic means comprises a light emitting diode. (43) The diagnostic means comprises means for generating a machine-readable signal. The apparatus according to claim (41). (44) the input data signal is connected to an additional coded fiber device generated by the additional fiber optic interface device; 37. The apparatus of claim 36, comprising a data signal, additional status signals and an electronic input data signal generated by the user equipment. (45) a fiber receiver that generates a decoded fiber signal from the additional coded fiber signal and the fiber activity signal from the additional coded fiber signal and the additional status signal generated by the additional fiber optic interface device; 37. The device according to claim 36, characterized in that it comprises communication means. (46) The method according to claim 36, further comprising line receiving means for generating a level-adjusted electronic input signal in response to the electronic input data signal generated by the user equipment. Device. (47) The apparatus according to claim (32), further comprising a power supply means for inducing power from the input data signal and the ready-in signal. (48) The power supply means includes: a first diode addition means for accumulating the positive voltage supply amount from the ready-in signal; a second diode addition means for accumulating the positive voltage supply amount from the input data signal; and the input data. 48. The device according to claim 47, further comprising third diode summing means for accumulating the negative voltage supply from the signal. (49) A voltage that limits the amount of current supplied by the first and third diode addition means. 49. Device according to claim 48, characterized in that it comprises current limiting means and comparison means for generating a control signal for controlling said current limiting means. (50) An electric power regulating means coupled to the positive and negative voltage supply sources, and an auxiliary power supply coupled to the positive and negative voltage supply sources to form a regulated voltage source. The device according to item (49). (51) Depending on the availability of auxiliary power, the line excitation means is configured to have a dual output impedance. 37. The device according to claim 36, characterized in that it comprises means for actuating the device at a speed. (52) Light emitting diode control circuit means for operating said light emitting diode at two brightness levels depending on the availability of auxiliary power. The device according to paragraph (36). (53) According to claim (36), further comprising power control means that reduces the shock coefficient and power consumption of the synchronized state means by regularly supplying power to the synchronized state means. The device described. (54) The invention further comprises: transition encoding means for forming a transition-encoded fiber data signal from the input data signal to reduce power consumption of the fiber optic interface device. Equipment described in Section. (55) forming a transition-decoded fiber signal to the optical fiber interface; characterized by comprising transition decoding means for reducing power consumption of the device. The device according to claim (45). (56) forming a transition-decoded fiber signal to the optical fiber interface; characterized by comprising transition decoding means for reducing power consumption of the device. The device according to claim (54). (57) transition encoding means for forming a transition-coded fiber data signal from the input data signal to reduce power consumption of the fiber optic interface device; and forming a transition-decoded fiber signal to reduce power consumption of the optical fiber interface device; fiber interface characterized by comprising transition decoding means for reducing power consumption of the device. The device according to claim (47). (58) The additional coded fiber signal and the fiber activity signal are receiving light guiding means for transmitting the coded fiber data signal and the status signal to the fiber receiving means; a transmission light guiding means for transmitting the additional coded fiber signal, a transmission light guide means for transmitting the additional coded fiber signal between the optical fiber interface device and the additional optical fiber interface device; Simultaneously transmits communication signals, coded fiber data signals, and status signals in both directions. a single optical fiber link cable means for transmitting, and said additional fiber optic link cable means between said transmitting and receiving fiber means and said single optical fiber link cable means. Added coded fiber signal, fiber activity signal, coded fiber data The transmitter/receiver fiber is connected to the A coupler/coupler for axially angularly aligning fiber means and a single fiber optic cable means. 37. The device according to claim 36, further comprising a connector combination device. (59) The fiber receiving means receives the additional coded fiber signal from the fiber actuator. a preceding signal of the coded fiber data signal and the state signal; Device according to claim 58, characterized in that it comprises value means for distinguishing reflections within the coupler/connector combination device. 60. The apparatus of claim 36, further comprising transmitting light guide means coupled to said fiber transmitting means for transmitting said coded fiber data signal and status signal. 61. The apparatus of claim 36, further comprising receiving light guide means coupled to said fiber receiving means for receiving said coded fiber data signal and status signal. (62) Optical fiber that allows system resources to be shared among multiple user devices 1) a first user means for generating a first ready-in signal indicating a ready state and a first data signal for transmission; a first optical data signal having a transmission rate; 2) a first ready-out signal indicative of a ready condition; and 3) a first electrical data signal. second user means for generating an in signal and a second data signal for transmission; second fiber optic interface means for generating: 1) a second optical data signal having a predetermined data transmission rate indicative of an operational status; 2) a second ready-out signal indicative of a ready condition; and 3) a second electrical data signal; 1st optical fiber tough the first electrical data signal is disposed in the interface means, and responsive to the first ready-in signal and the ready-out signal to ensure full-duplex communication of the first electric data signal between the two user devices of the first user means. and transmitting the first optical data signal to the second optical fiber interface means in response to the second optical status signal. The first operation means and the second optical fiber interface means are arranged to ensure full-duplex communication between the user equipment of the second user means and the user equipment of the second user means. and ensuring full duplex communication of the second electrical data signal between two user devices of the second user means in response to the second ready-in signal and the second ready-out signal. and transmitting the second optical data signal to the first optical fiber interface in response to the first optical status signal. a user device of said first user means; a second operation means for ensuring full duplex communication between the second user means and the user equipment; a link cable means for simultaneously transmitting data signals in both directions, between two user devices of the first user means, between two user devices of the second user means, and a user device of the first user means; An optical fiber communication system characterized in that full-duplex communication is established between the user devices of the second user means so that all access system resources can be shared. (63) A claim further comprising at least one pair of additional optical fiber interfaces for connecting additional user equipment in a ring-like manner through a bridge connection. The system according to paragraph (62). (64) Optical fiber that allows system resources to be shared among multiple user devices a first user means for generating a first ready-in signal indicating a ready state and a first data signal for transmission; a first electrical ready-out signal indicative of a status; and 3) a first fiber optic interface means for generating a first electrical data signal; and 1) a second optical data signal having a predetermined data transmission rate indicative of a current state of operation. ) a second electrical ready-out signal indicating a ready condition; and 3) a second electrical data signal. a second optical fiber interface means for generating a signal; said first electrical data disposed in said first user means and formed in response to said first data signal generated by a user device of said first user means in response to said first ready-in signal and ready-out signal; transmitting a signal and simultaneously transmitting the first optical data signal formed in response to the first data signal to the second optical fiber interface means and transmitting data obtained from the second optical data signal. , the first unit a first data manipulation means for transmitting data to all user equipment of the user means; transmitting the second electrical data signal formed in response to the second data signal generated by the apparatus; The second optical data signal formed in response to the second data signal is transmitted to the first optical fiber. a second data handling means for transmitting data obtained from the first optical data signal to all user devices of the second user means; and a single link cable means for bi-directionally transmitting the first and second optical data signals between the first and second fiber optic interface means, any of which is connected to the communication network. An optical fiber communication system characterized in that broadcast communication is established between one user device and all other user devices. Mu. (65) An optical fiber interface device for connecting a plurality of user equipments of a communication network, the device having a predetermined transmission rate and a transition indicating the operating state of the additional fiber optic interface device. receiving a transition-coded optical input data signal to generate a decoded fiber data signal and detecting a data transmission rate of the transition-coded optical input data signal. a fiber receiving means for receiving a ready-in signal emitted by the user equipment and the fiber activity signal, and addressing a logic decision table with the ready-in signal and the fiber activity signal to generate a switching signal; A line excitation means for generating ready-out and status signals, and a single fiber optic link cable for transmitting transition-coded optical output data signals. a fiber transmitting means for transmitting and receiving an electronic data signal output from the user equipment, the switching signal and the decoded fiber data signal, and in response to the switching signal, transmitting the electronic data signal and the decoded fiber data signal. From, small An optical filter comprising data manipulation means for selecting at least one output signal. fiber interface device. (66) The device according to claim 65, further comprising diagnostic light emitting diode means for indicating the current state of operation of the optical fiber interface device. (67) Further, a receiving fiber means for transmitting the input optical data signal to the fiber receiving means, and a transmitting fiber means for receiving the output optical data signal from the fiber transmitting means. Optical fiber cable means for simultaneously transmitting the input and output optical data signals in both directions; and the transmitting/receiving fiber means and the optical fiber cable means are connected to each other, and the transmitting/receiving fiber means and the optical fiber cable are angularly aligned in the axial direction. a coupler/coupler for simultaneously coupling the input/output data signals in both directions with the input/output data signal; The device according to claim 65, characterized in that it comprises connector combining means. Place. (68) The apparatus according to claim 67, wherein the fiber receiving means comprises threshold means for distinguishing between an optical input signal and a reflected optical output signal. (69) The apparatus according to claim (65), further comprising a power supply means for supplying electric power from the data input signal and the ready-in signal. (70) The power supply means includes a first diode adder that accumulates a positive voltage supply amount obtained from the ready-in signal. a second diode adding means for accumulating the amount of positive voltage supply obtained from the data signal; and a third diode summing means for accumulating the negative voltage supply obtained from the data signal. Device according to claim 69, characterized in that it consists of stages. 71. The apparatus of claim 69, further comprising voltage inverting means coupled to said second diode summing means to form an additional negative voltage source. (72) Further, current limiting means for limiting the amount of current supplied by the first and third diode addition means, and a ratio for issuing a control signal for controlling the current limiting means. The device according to claim 70, characterized in that it comprises means for comparing. (73) Claim 1 further comprising: an auxiliary power source coupled to the positive and negative voltage supply; and power regulation means coupled to the positive and negative voltage supply to form a regulated voltage source. The device according to paragraph (72). (74) Optical fiber interface that connects multiple user devices in a communication network an optical fiber interface device for receiving and decoding an optical input transition coded data signal having a predetermined transmission rate indicative of an operational state of the additional fiber optic interface device; the optical input transition-encoded data signal; fiber activity signal to form a fiber activity signal. a fiber receiving means, a ready-in signal issued from the user equipment, and a ready-in signal emitted from the user equipment; switching signal, ready-out signal and status signal by addressing a series of gates with the ready-in signal and the fiber activity signal. asymmetric combinatorial logic means for forming a signal from one of the plurality of electronic serial data ports; a fiber transmission means for transmitting an optical output transition encoded data signal via a single optical fiber link cable; receiving the electronic data signal, the switching signal and the decoded fiber data signal, and selecting at least one output signal from the electronic data signal and the decoded fiber data signal in response to the switching signal. an optical fiber, characterized in that it comprises data manipulation means; interface device. (75) Light guiding means for transmitting and receiving optical data. a recladding material formed around an end of the light guiding means to reduce light divergence and leakage; hold heat shrink tubing, ferrule means for positioning the light guiding means within the coupler/connector combination device, adhesive means for securing the light guiding means within the ferrule means, and a bridge for the light guiding means. 1. A light guide subassembly device comprising a filler means for removing the ferrule, and a shrink tube means for fixing the light guide means to the filler means and the ferrule means. (76) Further, it may further include an enclosure means having an opening for fixing the filling means. The device according to claim (75), characterized in that: (77) The enclosure means includes: a slot means formed in the enclosure means to hold the optical fiber link cable in a curved shape having a predetermined radius; and a slot means disposed in the slot means to hold the optical fiber link cable in a curved shape. Claim 76, further comprising an optical fiber link cable locking means for fixing the cable to the enclosure means and eliminating strain on the optical fiber link cable. equipment. (78) the predetermined radius secures the fiber optic link cable to the enclosure means; The optical fiber link cable can be 78. The device according to claim 77, wherein the device is large enough to transmit an optical signal. (79) A method for forming a subassembly transmitting/receiving magnification optical assembly used in a coupler/connector combination means to simultaneously couple optical information of a link cable in both directions, the method comprising: the ends of a receiving light guide means and a transmitting light guide means; peeling off the buffer and the cladding from the end portion, such that the cladding has a thickness equivalent to 30% or less of the optical fiber diameter of the receiving light guide means and the transmitting light guide means; Then, the ends are secured in a closely spaced triangular shape with fluoropolymer heat shrink tubing. A method characterized by comprising the step of determining. (80) further positioning the end in a ferrule means of the combination means, securing the end to the ferrule means, and removing the protrusion of the end with an air abrasive cut. The method according to claim 79, characterized in that the method comprises: (81) Further, the step of cutting the opposing ends of the receiving light guide means and the transmitting light guide means into a predetermined length to form flat opposing end surfaces. The method further comprises the steps of: optically coupling the opposing end surface of the receiving light guiding means to the light detecting means; and optically coupling the opposing end surface of the transmitting light guiding means to the optical transmitting means. The method according to claim (80), characterized in that: (82) Passing the receiving light guide means and the transmitting light guide means through a first optical cable sleeve, and fixing the first optical cable sleeve to a strain relief device attached to a segment of the combination means and an enclosing device. 82. The method according to claim 81, comprising the step of: (83) The step of optically coupling the reception light guide means to the light detection means includes aligning the reception light guide means with the light detection means so as to output a maximum output signal; and the step of optically coupling the reception light guide means to the light detection means. 82. The method according to claim 81, comprising the step of fixing the detection means to the detection means with an adhesive. (84) The step of optically coupling the transmitting light guiding means to the optical transmitting means is performed while maintaining the detection level of the light detecting means as a result of the reflection amount of the transmitted light being below a predetermined level. arranging said transmitting light guiding means such that the amount of transmitted light passing through is maximized; 82. A method according to claim 81, characterized in that it comprises the step of combining. (85) Further, the step of passing the receiving light guide means through a receiving optical cable, the step of passing the transmitting light guide means through a transmitting optical cable sleeve, and the step of connecting the receiving optical cable sleeve and the transmitting optical cable sleeve with a heat shrink tube. 1 cable three Claim 1, further comprising the steps of: fixing the receiving optical cable sleeve to the light detecting means; and fixing the transmitting optical cable sleeve to the optical transmitting means. 82) The method described in item 82). (86) A method of forming the end of a single optical fiber link cable that simultaneously transmits optical signals in both directions so as to minimize the amount of internal and external reflection, the method comprising: stripping the outside of the link cable, and forming an optical fiber. exposing the cruzing, removing the cruzing to expose the optical fiber core, applying a re-coating material to the core wire, and applying a fluoropolymer around the re-coating material. A method comprising the step of fixing a reamer heat shrink tube. (87) Further, a step of fixing the end portion to a ferrule means having a tapered surface that aligns the link cable, and a step of fixing the end portion to a ferrule means having a tapered surface that aligns the link cable, and fixing the end portion to the ferrule means by air abrasive cutting. and a step of roughly polishing the end portion with a polishing means to reduce the amount of reflection. Method. (88) The step of polishing said end portion comprises the step of roughly polishing said end portion with a polishing means to form a surface sufficiently rough to induce higher modes of reflected radiation of said link cable. The method according to claim (87), characterized in that: (89) fixing fluoropolymer heat-shrink tubing around the recladding material comprises: heat-shrinking the fluoropolymer heat-shrink tubing to a buffer portion of the link cable; and fixing the heat-shrink tubing to a buffer portion of the link cable. Heat shrink the area around the end of the link cable. The method according to claim 88, characterized in that the method comprises a step of fixing to the Law. (90) A claim further comprising the step of attaching the heat shrink tube to the ferrule means and the outside of the link cable to remove strain. The method according to paragraph (89). (91) An optical fiber bidirectional transmission system that simultaneously transmits optical signals in both directions. a first light guide means for transmitting and receiving data from the first optical fiber interface device; a second light guide means for transmitting and receiving data from the second fiber interface device; a first light guiding alignment means for holding the second light guiding means in a narrowly spaced triangular shape; a second light guiding matching means for holding the second light guiding means in a narrowly spaced triangular shape; said first and and the second light guiding means, the optical fiber has a length sufficient to substantially cover the optical fiber light guiding core. a single optical fiber link cable means having a bar link core diameter and transmitting the optical signal in both directions simultaneously between the first and second light guiding means; a first end of the single optical fiber link cable means; a first link cable alignment means disposed about a second end of said single fiber link cable means; link cable matching means. The first light guide matching means and the first link cable matching means are angularly aligned in the axial direction. a first connector means that simultaneously transmits the optical signal in both directions between the first light guide means and the single optical fiber link cable means; and the second light guide matching means; and the second link cable matching means are angularly aligned in the axial direction. A system comprising second connector means for simultaneously transmitting the optical signal in both directions between the second light guiding means and the single optical fiber link cable means. (92) further arranged around the ends of the first and second light guiding means, wherein a lower mode signal of the optical signal propagates through the first and second light guiding means; , a crazing means having a thickness sufficient to allow higher mode signals to leak out; said higher mode signal surrounding said crazing means and leaking through said crazing means; The system according to claim 91, characterized in that it comprises light absorption means for absorbing light. (93) The light absorbing means consists of a black adhesive compound fixing the first and second light guide means to the first and second light guide alignment means. The system described in paragraph (92). (94) The length and thickness of the crassing means can be adjusted in the same manner as the link cable means, having a predetermined minimum length or more, so as to eliminate propagating signals of higher modes. The system according to claim 92, characterized in that: (95) The single optical fiber link cable means. sufficient to substantially reduce reflections of said optical signal entering said link cable means; The system according to claim 91, characterized in that it has a rough end surface. Mu. (96) said end face enhances a substantial portion of the reflected optical signal within said link cable means; 96. The system according to claim 95, wherein the system is reflected as positional mode radiation. (97) The first and second connector means connect the first and second light guiding means from the first and second ends of the single optical fiber link cable to a minimum diameter of the optical fiber light guiding core. 92. A system according to claim 91, characterized in that they are separated by a distance corresponding to approximately one-fourth but not more than one-half. (98) Further, the light guide and the matching means are disposed between the first light guiding matching means and the first link cable matching means and between the second light guiding matching means and the second link cable matching means to reduce reflection. 92. A system according to claim 91, characterized in that it comprises refractive index matching means. (99) said single fiber optic link cable means attenuates by a predetermined minimum amount to maintain the magnitude of reflected optical signals from the first and second ends of said link cable means below a predetermined level; The system according to claim (91), characterized in that: (100) The single optical fiber link cable means is below a predetermined level. The magnitude of the optical signals reflected from the first and second ends of the link cable means should be maintained. 93. The system of claim 92, wherein the system is attenuated by a predetermined minimum amount. (101) The single optical fiber link cable means is below a predetermined level. The magnitude of the optical signals reflected from the first and second ends of the link cable means should be maintained. 96. The system of claim 95, wherein the system is attenuated by a predetermined minimum amount. (102) The system of claim 99, wherein the link cable means having a predetermined minimum length provides attenuation by the predetermined minimum amount. (103) Claim (99) characterized in that the optical fiber link is attenuated by the predetermined minimum amount by using a material having a predetermined minimum amount of attenuation per unit length. system described in. (104) The system of claim (99), wherein the optical fiber link cable is attenuated by the predetermined minimum amount by using mode stripping means. (105) The light guiding means comprises: a receiving light guiding means for receiving an optical input signal from the link cable means; and a transmitting light guiding means for transmitting an optical output signal to the link cable means. The system according to claim (91). (106) further comprising receiving assembly means coupled to the receiving light guiding means to detect the optical input signal; and transmitting assembly means coupled to the transmitting light guiding means to generate the optical output signal. The system according to claim (105). (107) The receiving assembly means includes: a detection means for detecting the optical input signal; an optical coupling means for increasing optical coupling efficiency between the detection means and the reception light guide means; 107. The system according to claim 106, comprising adhesive means for fixing in optical alignment with the detection means. (108) The receiving assembly means further comprises heat shrinking means disposed around the receiving light guiding means to maintain the receiving light guiding means in a closely spaced configuration. The system according to scope paragraph (107). (109) Furthermore, the receiving light guiding means is surrounded and the distortion of the receiving light guiding means is removed. receiving light guiding cable sleeve means bonded to said adhesive means so as to remove the receiving light guiding cable; 109. The system according to claim 108, wherein: (110) said transmitting assembly means responsive to said electrical output signal; a transmitting means for generating a power signal; an optical coupling means for increasing optical coupling efficiency between the transmitting means and the transmitting light guiding means; and adhesive means for fixing the transmitting light guide means in optical alignment with the transmitting means. The system according to claim 106, characterized in that: (111) Furthermore, the transmitting light guiding means is surrounded and the distortion of the transmitting light guiding means is removed. transmitting light guiding cable sleeve means bonded to said adhesive means so as to remove the transmitting light guiding cable; The system according to claim 110, characterized in that the system comprises: (112) the transmitting assembly means is responsive to the voltage output signal to a transmitting means for generating a force signal; and a transmitting light guiding means are fixed to be optically aligned with the transmitting means, and the refractive indexes are matched, so that the transmitting means and the transmitting light guiding means are fixed. 107. A system according to claim 106, characterized in that it comprises adhesive means which increase the optical coupling efficiency. (113) as defined in claim 106, further comprising value means connected to the receiver assembly means for distinguishing between the optical input signal and a reflection of the optical output signal. system. (114) Optical transmission from multiple transmitting/receiving light guide lines to one optical fiber link cable. A method for reducing reflections in an asymmetric Y-coupler/connector device for bi-directionally transmitting signals, the method comprising: angularly aligning the end of the transmitting and receiving light guide with the link cable; the end face and the end face of the link cable are substantially parallel and perpendicular to the coax of the transmitting and receiving light guide and the link cable, and the end face of the transmitting and receiving light guide is A distance from the end face of the link cable that corresponds to approximately one quarter, but not more than one half, of the minimum optical fiber core diameter of the transmitting and receiving light guide. A process for vertically aligning the transmitting/receiving light guide and the link cable so that they are separated by a certain distance. A method characterized by comprising steps. (115) An optical fiber that bidirectionally transmits optical signals between optical fiber interface devices. A method of reducing reflections in a fiber link cable, the method comprising polishing the fiber optic link cable to attenuate a substantial portion of the optical signal reflected into the link cable by higher mode radiation. It is characterized by comprising the steps of forming an end surface that reflects light, and providing a link cable that attenuates by a predetermined minimum amount. How to do it. (116) The step of providing the link cable includes a link cable having a predetermined shortest length. and using an optical fiber core wire within the link cable to attenuate by the predetermined minimum amount with respect to the predetermined minimum length. ). (117) Reducing the amount of reflection in the optical coupler/connector combination device that optically couples optical fibers and mechanically connects them by removing high-order mode radiation. A method comprising: providing a cradling material around the optical fiber that allows high-order mode radiation to leak out; A method characterized by comprising a step of surrounding the body with the body. (118) A method for reducing optical loss in a bidirectional asymmetric Y-combiner/connector by increasing the ratio of active surface area to loss area, the method comprising: approximately 4 to 15% of the optical fiber diameter of the transmitting and receiving light guide. A plate with a thickness equivalent to a step of providing a transmitting/receiving light guiding line having a radiating surface, a step of arranging the transmitting/receiving light guiding lines in a narrowly spaced shape, and a step of: when the transmitting/receiving light guiding lines are arranged in a narrowly spaced shape, the transmitting/receiving light guiding lines substantially overlap with the optical fiber core wire; A method comprising the step of providing a link cable having an optical fiber core. (119) Furthermore, the optical fiber interface device and the additional optical fiber interface A method for detecting data transmission failures indicating breaks in the link cable by continuously monitoring the fiber optic link cable coupled to the interface device. 37. Device according to claim 36, characterized in that it comprises a stage.