CN2640132Y - Attenuation coupling single fibre-optical single-waveguide two-way transmission converter - Google Patents
Attenuation coupling single fibre-optical single-waveguide two-way transmission converter Download PDFInfo
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- CN2640132Y CN2640132Y CN 03247227 CN03247227U CN2640132Y CN 2640132 Y CN2640132 Y CN 2640132Y CN 03247227 CN03247227 CN 03247227 CN 03247227 U CN03247227 U CN 03247227U CN 2640132 Y CN2640132 Y CN 2640132Y
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- single fiber
- coupler
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Abstract
The utility model relates to a photo-communication transmission set, which is particularly applicable to single fiber single wave two-way transmission converter. The utility model is separately connected with two mutual corresponding optical transmitter and receivers, the single fiber single wave two-way transmission converter and the optical transmitter and receiver transmit in two ways, a way is connected with sending light source and the other way is connected with receiving light source. The two single fiber single wave two-way transmission converters carry out the communication transmission via the connection of single fiber. The utility model is characterized in that: the converter comprises an attenuation network and a coupler, and the attenuation network is connected with the light sending terminal of the optical transmitter and receiver to make the sending signals of the optical transmitter and receiver pass through the attenuation network and the coupler and be output via single fiber. Compared with the existing technique, the utility model has the advantages that signals can be two-way transmitted in single fiber with the usage of only a wavelength and no need for power supply, the volume is small, the weight is light, both the stability and the reliability are high, the fixing, and the usage and the maintenance are convenient.
Description
Technical field
The utility model has related to a kind of optical communication transmitting device, is specially adapted to single fiber list ripple bidirectional transmission converter.
Background technology
Mostly present optical fiber telecommunications system is the two fine systems of single ripple, i.e. each transmits the signal of single wavelength transmitting-receiving with an optical fiber.Along with the fast development of optical communication, the use amount of optical fiber is increasing, and is in short supply and make full use of fiber resource in order to solve some areas optical fiber, adopts a kind of demand of single fiber bi-directional transmission having become optical communication development.Solve the single fiber bi-directional transmission demand and can adopt the multiplexing method of two wave-length divisions, method that also can single wavelength transmitted in both directions.The report of existing two-way OADM module in the prior art, the OADM module of its primary structure is made up of multiplexer, optical switch display, demodulation multiplexer etc., optical fiber links to each other with demodulation multiplexer, demodulation multiplexer links to each other with optical switch by optical fiber, the optical switch display is by optical fiber and demultiplexer, the OADM module of this structure has proposed restriction to road wavelength of optical signal up and down, i.e. the light signal of the identical wavelength of both direction transmission can not be up and down road up and down simultaneously.Also form by a plurality of circulators, a plurality of erbium-doped fiber amplifier, a plurality of reflective add-drop multiplexing module in the prior art by the two-way OADM module that adopts, but its complex structure, the cost height; Adopted catoptric arrangement, made this module, be unfavorable for the raising of this module performance the inhibition ability drop of reflecting background; Support the ability drop of light wave dynamic routing.
Single fiber list ripple bidirectional transmission converter of the present utility model is exactly to adopt single wavelength to carry out the product of single fiber bi-directional transmission.Use these products not need to change the transmission equipment at communication system two ends, only need add attenuation coupling single fiber list ripple bidirectional transmission converter, just can will originally carry out transmitted in both directions at the signal on two optical fiber and to an optical fiber at the two ends of circuit.It only uses a wavelength, and without power supply, volume is little, in light weight, and stability and reliability height are installed and used easy to maintenance.Attenuation coupling single fiber list ripple bidirectional transmission converter can provide a transparent channel to signal, is applicable to Ethernet, and PDH, SDH transmission network are carried out the transmission of single fiber bi-directional signal.
Summary of the invention
The purpose of this utility model is achieved by the following technical solution: the utility model is connected respectively to two optical transceivers of mutual communication, single fiber list ripple bidirectional transmission converter and optical transceiver divide two-way to transmit, one the tunnel is to connect to send light source, one the tunnel receives light source, transmit by simple optical fiber connection carrying out communication between two single fiber list ripple bidirectional transmission converters, it is characterized in that transducer is made up of attenuator and coupler, attenuator is connected with the light transmitting terminal of optical transceiver, so that the transmission signal of optical transceiver passes through attenuator and coupler, and export by single fiber.
Attenuator described in the utility model two ends are connected respectively to the light transmitting terminal of optical transceiver and an input of coupler, and an attenuator folk prescription is to transmitting light signal from the optical transceiver transmitting terminal to coupler.Another input of described coupler directly is connected with the optical receiving end of optical transceiver, and the coupler output is connected with an end of single fiber.
The utility model compared with prior art has signal and carry out transmitted in both directions on an optical fiber, and it only uses a wavelength, and without power supply, volume is little, in light weight, and stability and reliability height are installed and used easy to maintenance.
Description of drawings
Fig. 1 is connection side's block diagram of the present utility model.
Fig. 2 is a fundamental diagram of the present utility model.
Fig. 3 is a port syndeton schematic diagram of the present utility model.
Embodiment
Below in conjunction with description of drawings the utility model is described in further detail: as shown in Figure 1, single fiber list ripple bidirectional transmission converter of the present utility model is connected respectively to two optical transceivers of mutual communication, single fiber list ripple bidirectional transmission converter and optical transceiver divide two-way to transmit, one the tunnel is to connect to send light source, and one the tunnel receives light source.Transmit by simple optical fiber connection carrying out communication between two single fiber list ripple bidirectional transmission converters.As shown in Figure 2, the utility model is made up of attenuator 1 (SC/PC fixed attenuator) and coupler 2 (splitting ratio 50: 50), attenuator 1 is connected with the light transmitting terminal of optical transceiver, so that the transmission signal of optical transceiver passes through attenuator 1 and coupler 2, and exports by single fiber.And behind the optical communication signal process coupler 2 of single fiber input, because the buffer action of attenuator 1, the optical communication signal that single fiber is imported can not be transferred to the light transmitting terminal of optical transceiver.The optical communication signal of single fiber input can only directly enter the optical receiving end of optical transceiver through behind the coupler 2, thereby has realized the effect of single fiber list ripple transmitted in both directions.As shown in Figure 3, profile of the present utility model is 133mm * 80mm * 15mm, single fiber list ripple bidirectional transmission converter of the present utility model has three ports (light source, reception, single fiber go out), wherein " single fiber goes out " port with make the optical fiber that the single fiber bi-directional transmission converter uses and link to each other, " reception " port links to each other with the receiving terminal of light device, and " light source " port links to each other with the transmitting terminal of light device." light source ", " reception " and " single fiber goes out " port all adopt PC/UPC type connector.The transducer base plate has four fixing holes, available M3 screw.Transducer can be installed on the fibre distribution frame, also can be positioned over other place in the machine room.Single fiber list ripple bidirectional transmission converter operation wavelength of the present utility model is 1310nm and 1550nm, and each connector can only be used for some wavelength.Operational environment of the present utility model is: operating temperature range :-10 ℃～70 ℃; Storage temperature range :-40 ℃～85 ℃; Humidity: less than 85%.
Note the joint cleaning to connector when the utility model is installed, joint is unclean will directly to influence transmission performance.Must select and the light jumping fiber connector that requires to conform to, as require the joint of UPC type not use the joint of APC type, and prevent the overgenerous bump of transducer.Table 1 is single fiber list ripple bidirectional transmission converter performance index of the present utility model.Table 2 is attached reference transmission distances of the present utility model, and parameter is the reference transmission distance when following condition in the table:
Transmitted power :-10dbm (0dbm) receiving sensitivity :-37dbm
System margin: 7db fibre loss: 0.35 (0.5) db/Km
● STO-02 single fiber list ripple bidirectional transmission converter performance index are as follows:
| Performance index | Parameter |
| Operation wavelength (nm) | 1310 ± 20 or 1550 ± 20 |
| Isolation (db) | ≥50 |
| Insert loss (db) (a pair of) | ≤4 |
| Return loss (db) | ≥50 |
| Directivity (db) | ≥55 |
| Polarized dependent loss PDL (db) | ≤0.15 |
| Polarization mode dispersion PMD (PS) | ≤0.15 |
| Working temperature (℃) | -10～+70 |
| Storage temperature (℃) | -40～-85 |
Table 1
Attached reference transmission distance:
| Insert loss (db) | Allow system loss (db) | Communication distance (Km) | |||
| Transmitted power (dbm) | -10 | 0 | -10 | 0 | |
| Transducer STO-02 | 4 | 16 | 26 | 45(32) | 74(52) |
Table 2
Claims (4)
1, a kind of attenuation coupling single fiber list ripple bidirectional transmission converter, be connected respectively to two optical transceivers of mutual communication, single fiber list ripple bidirectional transmission converter and optical transceiver divide two-way to transmit, one the tunnel is to connect to send light source, one the tunnel receives light source, transmit by simple optical fiber connection carrying out communication between two single fiber list ripple bidirectional transmission converters, it is characterized in that transducer is made up of attenuator and coupler, attenuator is connected with the light transmitting terminal of optical transceiver, so that the transmission signal of optical transceiver passes through attenuator and coupler, and export by single fiber.
2, attenuation coupling single fiber list ripple bidirectional transmission converter according to claim 1, it is characterized in that described attenuator two ends are connected respectively to the light transmitting terminal of optical transceiver and an input of coupler, an attenuator folk prescription is to transmitting light signal from the optical transceiver transmitting terminal to coupler.
3, attenuation coupling single fiber list ripple bidirectional transmission converter according to claim 2 is characterized in that another input of described coupler directly is connected with the optical receiving end of optical transceiver.
4, according to the described attenuation coupling of claim single fiber list ripple bidirectional transmission converter, it is characterized in that described coupler output is connected with an end of single fiber.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 03247227 CN2640132Y (en) | 2003-06-11 | 2003-06-11 | Attenuation coupling single fibre-optical single-waveguide two-way transmission converter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 03247227 CN2640132Y (en) | 2003-06-11 | 2003-06-11 | Attenuation coupling single fibre-optical single-waveguide two-way transmission converter |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2640132Y true CN2640132Y (en) | 2004-09-08 |
Family
ID=34292771
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 03247227 Expired - Fee Related CN2640132Y (en) | 2003-06-11 | 2003-06-11 | Attenuation coupling single fibre-optical single-waveguide two-way transmission converter |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2640132Y (en) |
-
2003
- 2003-06-11 CN CN 03247227 patent/CN2640132Y/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |