TW200821648A - Optical fiber grating switch module - Google Patents

Abstract

An optical fiber grating switch module comprises multiple one-to-many optical couplers, a many-to-many optical coupler and a burst-mode optic-electric converter. It utilizes the filter characteristics of the optical fiber grating, in a directional optical coupler, to design as an optical-domain encoder/decoder, and to create an optical-domain data channel between the paired encoder/decoders. By using a directional three-end optical coupler to produce the encoder/decoder optical fiber grating therein, the optical domain data channel of the many-to-many optical coupler has the difference in outgoing and incoming. The encoding principal of the encoder is mathematically defined as orthogonal characteristics, and the wavelength factor is used as a wave expansion method to correspond to the optical fiber grating function, and then the many-to-many optical coupler is used to integrate multiple optical domain data channels into an optic-mixture center. The many-to-many optical coupler has bidirectional characteristics, so the optic-mixture center also has an optic-distribution function. The optic-mixture center of the many-to-many optical coupler combines multiple one-to-many optical couplers and encoder/decoder optical fiber grating thereon to form switch function of optical-domain data channel after proper integral arrangement. This switch module is then formed by including other auxiliary control circuit.

Description

200821648 IX. Description of the invention: [Technical field of the invention] The present invention relates to a fiber grating switching module, in particular to a codec fiber grating group, a directional light age, a singular optical coupler for making a miscellaneous The pool, letting the light message to each other's reach their respective purposes. [Prior Art] . Paired channel coding and decoders of electric type must be made with complex _ ratio or digital circuit, and the cost is relatively high, and the high-speed channel coding and decoder circuit, with the higher frequency of operation, Difficult, but have its physical limits. For example, the operating frequency of its or the fresh coder operating frequency is about gOGigabikpersecond, which is old in human technology, so that high-frequency encoding or decoder functions are still difficult to achieve. At high speed, the structure of the electric switching center, the electrical signal of the transmitting end, the end-to-end distribution to the multi-end, due to the unequal length of the miscellaneous, the strength and phase of each terminal are easily different, so that the receiving end receives The signal quality is inconsistent, causing the switching function to malfunction. Lu also has an electrical codec and decoder with a switch fabric for the hybrid optical switching center. In fact, the mixed light father changes the center, and the total light energy value must be regulated. As long as it is a hybrid optical switching center switching module, the decoder is very sensitive to the signal-to-noise ratio, and the signal-to-noise ratio is one of the main factors for the performance of the decoder. The electric type decoder basically decodes the electric signal potential, so the light energy value must be converted into the potential value, and the system of the exchange module can effectively control the total light energy of the hybrid optical switching center according to the potential value, and exchange The module transmits energy to its individual optical transceivers. Therefore, the electrical filter receiving module needs photoelectric dynamic monitoring and adjustment. Pure optical switching modules are not required. 200821648

I The traditional way of signal flow is to separate the path from the incoming direction or the half-duplex with time division. Although using frequency division multiplexing and full-duplex, or optical split-multiplexing and full-duplex, the same path can be achieved, but at the same time, the communication to the broadcast mode is reached, but the multi-point-to-multiple The purpose of point communication. The all-optical codec and decoder, coupled with the switching fabric of the coupled optical switching center, is the ideal parent-changing hardware, and for the encoder and decoder made by the fiber grating, 1〇Gigabitspersec^d • is only the basic operating frequency There is a potential for higher operating frequencies, and it is currently operated by the highest electrical data information. In the future, the optical data can be optically modulated, and the operating frequency of the parent can be changed to a higher speed, which can better display the superiority of the fiber grating switching module. It can be seen that there are still many defects in the above-mentioned habits, which is not a good designer, and needs to be improved. In view of the shortcomings derived from the above-mentioned practices, the inventor of the present invention has improved and innovated, and after years of painstaking research, he finally successfully developed and completed the fiber grating switching module. SUMMARY OF THE INVENTION The object of the present invention is to provide a router which is constructed by using the architecture of a fiber grating switching module, which not only has the function of high-speed exchange of data information between the daytime, but also allows exchange of multiple pairs of data information formats. 'For example, IP (Intemet Protocol) for IP, ATM (Asynchronous Transfer Mode) for ATM. It also allows for the exchange of multiple pairs of electrical data information rates, such as IGbps versus IGbps, 10Gbps versus 10Gbps. Therefore, the optical data information mixed by multiple optical switching centers can have IP, ATM, Sonet/SDH signal type, iGbps, lOGbps and other signal speeds. A second object of the present invention is to provide an exchange system for telecommunication information that can be reduced to 6 200821648 to reduce the size of the father. In the switch module, the circuit is developed into an optical path, which simplifies the system architecture and functions and increases application flexibility. Due to the high-speed switching circuit, there are restrictions in the object and it is not a mussel. Therefore, in addition to the use of the signal exchange, the present invention can also be used in the backplane of the test equipment or the optical extension slot of the personal computer. These applications are being upgraded to operate at a rate that allows for bribery and delivery, which is greater, faster and cheaper, and can lead to new applications and services. A fiber grating switching module capable of achieving the above object of the invention is composed of a plurality of pairs of multi-light light mouthpieces; a multi-optical coupler and a burst-type photoelectric conversion transceiver; and a plurality of-to-multi-glossy faces The combiner is a directional three-terminal optical combiner, which is composed of a fiber grating with a codec function, and the main characteristic of the fiber grating is strong in self-correlation, and the specific code has a low specificity; This feature is based on the principle of optical wavelength patterning and the filtering effect of the fiber grating, and the channel can be established between pairs of specific codes. ', i remove interference, and paste the principle of orthogonal data encoding, ^ count η8 kinds or good code, this · "riding - fiber grating made of optical domain code and decoder, in order to achieve the purpose of multi-data exchange, And applying the function of encoding and decoding fiber grating to make the transmitting end and the receiving end of the light; a multi-pair and multi-light age I multi-material hybrid bidirectional multi-turn recording light combiner, the second is the evening 埠 埠 埠The light center, because it is bidirectional, also becomes a multi-turn-to-multiple light distribution. Combining multiple-to-multi-light light combiners, the modulated light of a plurality of encoded fiber gratings is turned over. Establish the characteristics of the channel to form the exchange _. The multi-to-multi-green combiner is a multi-turn center. It will receive a lot of different modulated modulation lights of the read-and-send end, and mix them together. The mixed light is distributed; therefore, each of the multiple optical switching centers 200821648 has a two-way function, that is, the chirp sends the modulated light, and also receives the mixed light; a burst type photoelectric conversion transceiver, Due to the semi-bright state when there is no data, it is the same as the interference source, affecting other transmissions. Channel optical signal reception purity. The code division multiplexing system is very sensitive to interference. It is hoped that many transceivers will be forced to be in a dark state when there is no data transmission. Because the transceiver is raised from full dark state to full brightness (data 1), or semi-bright (data 〇) state takes time, may not be able to make the data string for photoelectric conversion, must design the control circuit, buffer the data to be sent, and control the timing of the photoelectric conversion transceiver to turn on and off. Due to the data to be converted For a cluster of photoelectric conversion transceivers, the full-dark, semi-bright, full-bright tri-state bundle illuminating converter is a new type of transceiver, but this function is still not enough, the optical wavelength must be wide enough to make the fiber The grating is used for spreading wave coding, for example, 5 nm (the general laser wavelength is less than ο" nanometer). Therefore, the burst-type photoelectric conversion transceiver of this case has the characteristics of full dark, semi-bright, full-bright tri-state, burst, and wide wavelength. The process is to send the electrical data information to be exchanged to one of the multiple transmission ends of the optical switching module. First, it will be converted into an optical data information signal, which is passed through a coded fiber grating such that it contains a light modulated signal encoded by a particular method. Such a light modulation signal carries modulated light modulated by information and wavelength factors. This modulated light is transmitted to the multi-optical switching center of the many-to-many optocoupler. The multi-turn optical switching center will modulate the light and distribute it to the receiving end of each optical switching module channel. The receiving end of an optical switching module channel, from the seemingly chaotic light, uses a decoding fiber grating to filter out the corresponding transmitting end, the transmitted optical data signal, and then uses the photoelectric conversion circuit to restore it to electrical data information. .叙 $ and A string information is a-Code code multiplex (CDMA, Code Division Multiple 200821648

Access) code, converted to A-Code-Data. Assume that the B-string information is divided into B-Code-Data by B-Code. Assume that the C string information is converted into C-Code-Data by the C-Code code multiplex code. There are also 128 Code_Data types. Then, A-Code-Data, B-Code-Data, C-Code-Data, etc., are smashed together. So you need to mix all the CodeJData together with a mixer. To separate the A string information from the 128 Code-Data that are mixed together. Then use A-Code code multiplex (CDMA Code) code to create filters, from a lot of confusion

In Code-Data, the A string information is separated. By the same concept, B-Code filter, C-Code filter v, D-Code filter, E-Code filter, etc. separate the b-string information, and separate the C-string information··· ·. So you need a dispenser to mix everything together.

Cock-Data. Assigned to A-Code filter, B_Code filter, C_Code filter, D_Code filter, E_Code filter, etc. Because A-Code has the greatest similarity with A_Code_Data (Autocorrelation), and B_Code-Data, C- Code_Data ···· and so on (Cross-correlation), so _ A_Code filter can easily filter out A_Code_Data from a lot of chaotic Code_Data, the same as * when A_Code demodulates A_Code_Data to restore A string information. For more applications, assume that there are 1 special codes for lA_Code, 2A_Code, 3A_Code, 4A_Code, 5A_Code, 6A_Code, 7A_Code. That is, 7 decoders 0 assume that there are two codes - Code, 2B - Code, 3B_Code, 4B_Code, 5B": ode, 6B_Code, 7B Code, 7 dedicated codes. That is 7 decoders. 200821648

Suppose there are 1 C Code, 2C Code, 3C Code, 4C - 1 - H〇de, SC_Code, 6C__Code, 7C-Code, 7 dedicated codes. That is 7 decoders. In this way, there are 7 special codes for Ding, Wu····. B uses lA-Code to send information to A, and A uses lA-Code to receive information on the use of u and ~. C uses 2Aj: ode to send information to A, and A uses 2Aj: 〇de, and collects information sent by C 2A c〇d. Ding 3A to Code to send information to A, A to use 3A-Code, to receive information sent by C 3A c〇d. So on and so forth····.

A use 1 B a Code to send information to B 'B with IB-c〇de, receive a c with c〇 (je, off the information. C use 2B_Code to send information to B 'B with 2B-Code, charge C for 2b The data sent by Code. D3 uses 3B_Code to send the information to B'B for 3B_CGde, and for C3 to send the data. And so on.. A uses 1C-Code to send information to C, C to lc- C〇de, receive the information sent by lc-c_. B use 2C-Code to send information to C, C to 2c-c〇de, receive information sent by 2c-c_. Use 3C- Code sends the information to C, Guan 3C-c〇de, collects the data sent by the redundant use. And so on. · By the way, A uses 1D_C() to send information to E, and E uses lD- CGde, receive the information sent by ID-Code.······················································································································· 7 special codes, that is, 7 encoders. B has 1A-C〇de, 2C_Code, 2D_C〇de, 2E_c〇de, 2F_c〇de, 2G-c〇de, 2H_Code, 7 special codes. Encoders 10 200821648 C 2A Code 3B Code, 3D ΓηΗρ, it? η ! — —, ——Code, 3F—Code, 3Gj3〇de 3H—Code' 7 dedicated codes. That is, 7 encoders. And so on, Ding You · · · · In summary, A uses w to send information to B, and B uses 1A-(10) to send information to A. A uses 1C-Code to send information to C, Guan 2Aj: Qdeitf to A. And so on · · · ·. Send the signal to 7 other people with 7 yards, and use another 7 yards to charge another 7 people to send a signal to A. The same is true for B. The same is true for C, D, · · · ·. But pay attention to the use of i B ~c〇de Send the information to B, i B_C〇de is the code for the data received by B. Therefore, 8 people send data to each other, only 8X7=56 CDMA codes are required. ^ For A and A, send information with lB-Code To B, go out in the direction, B use u~c〇de to send information to A, that is to come. _ have sent (five) and 彳 coffee) both ends, the outer end can be shared. Therefore, for the end of the same kind of push C, D · · · ·. Therefore, A needs to use 7 3-terminals, and the external ends of the 3-terminals are all connected, so A requires a 7-to-1 light mixer.

And so on, you need to use 7 3-terminals and a 7-to-1 light mixer. And so on, Ding···· is also true. A 7-to-1 light mixer, B's 7-to-1 light mixer, Ding's 7-to-1 light mixer' and so on. All of them need to be connected together, so use an 8-terminal mixer. It is assumed that the entire wavelength group interval is from 1548 nm to 1553 nm, divided into 127 intervals. Then 5 nanometers except 127, about 4 nanometers. Therefore, the first wavelength is 1548〇4. The second wavelength is 1548·08 ′ and the second wavelength is 1548.12 and so on, up to 1553 nm. The burst-type photoelectric conversion transceiver all wavelength groups pass the result of 1 BJ:ode encoding fiber grating used by A, and the shape of 200821648 becomes 1 B-Code 4 temple fixed wavelength group. That is, the first wavelength is 1548 〇4. The second wavelength is a548·08, the second wavelength is 1548·12, and so on. · · · · 5 until 1553 nm, according to the characteristics of 1 B-Code, appear or not appear, form! B—c〇de light wavelength group. By analogy, the results of the 2B-Code coded fiber grating used in all wavelength groups form a 2B-c〇de specific wavelength group. ^ 1A^c〇de... .7Η^β Special wavelength group, are not the same. The above-mentioned A used ΙΒ-Code to send information to B, A used (10) to send information to C, and so on. For 7 specific wavelength groups, use a 1 to 7 optical combiner, which is sent to the multi-photocoupler. The same is true for B. For 7 specific wavelength groups, use a 1⁄2 scoop light sigma ’ 'mixed in-start' to give a multi-photon remixer. And so on, such as pushing C, D, and E---- The multi-to-multiple optocoupler will mix all the light of the specific wavelength group of the system in the two-way, recognizing the light, and allocating the light to the correct pair of light, B The 1 to 7 light age device, and so on, C, D, F... A pair of 7 light-light combiners, which receive all of the light from a multi-pair multi-optical combiner, are assigned to (four) 1Α_(f)_5α__, 7A_C〇de, 7 grid decoders. From the foregoing, we can know that B is used to send information to A, Bing _ CGde to send information to A, Ding to use 3a-(10) to send information to A, and so on. · · · · 〇B's 1 to 7 light οα The light that is blown together from all-to-many light combiner is distributed to (10) 6B—Code, 7B—Code, and 7 dedicated stone horses. a Outer 9, - ' Just 7 fiber Bragg grating decoders. From the above, 12 200821648, use 1 B-Code to send information to B, C use 2B-c〇de to send information to B, D use to commit -c to send information to B, and so on. And so on, such as push-and-but, pent, pent, and so on. The same is true for the pair of 7 optocouplers, which receive all the mixed light from the eve of the eve, and then assign it to the 7 FB decoders. , Knife J received information from 曱·B and so on. In the system considerations, 'each user, 7 fiber grating decoders and code steaming is enough, and i fiber grating decoders and encoders are added for the purpose of measuring the engine' to make maintenance more convenient. [Embodiment] The ginseng _- is a sound structure and a diagram of the optical fiber fine structure of the fiber grating switching module of the present invention, which is composed of a _ heart _ and a fiber shell; the system and the material line are fresh, and the photosensitive fiber is irradiated. The refractive index of the two-dimensional area of the core portion of the piece changes. It is not covered by ultraviolet light. In addition, it is possible to manufacture fiber gratings of different codes and decoders; this code-and-decoder fiber-optic grating is 5 micrometers, and it contains a plurality of two-dimensional surface refractive index changes. Encoding or decoding _ fiber grating (10), the job will be by the fiber grating 101 ^ spread wave function called fine coffee _ _ _ _ 1 黯 黯 的 展 凊 凊 凊 凊 凊 凊 凊 凊 凊 凊 凊 凊 凊 凊 凊 凊 凊 凊 凊 凊 凊 凊 凊 凊 凊 凊 凊The three-terminal fiber grating structure diagram of the grating money amount and the optical path axis of the component, the three-end light class has two directionality, and the direction is the code for the use of 'for transmission _ Τχ 3〇2' surface for the ambiguity, the work is deleted, the destination is I received the light signal from the Lang iW 301; the optical fiber of the going and the direction of the fiber is differently encoded and decoded, but the code is converted to the light source __ code, in the light field, the light can be formed, 丨m reduced Light shirt said. (4) Each (4) Slave Shaw Code and Solution 4 13 200821648 In order to form a unique channel without interfering with each other in the optical domain. The encoding of the optical wavelength spread mode requires sufficient wavelengths. For example, a wave width of 5 nm is required. For the 5 nm wavelength, the unit wave can be obtained in units of 0 N in nanometers. Wide, weave wave width coding. There is a combination of 125 units of wave width and presence or absence of light; that is, 2exponential (125) so many optical code combinations, to remove the code with insufficient light energy, 128 wavelength groups can be selected to become the channel wave width group. Then go to design the fiber _, the system of 128 units - the wave width group, that is, 128 kinds of fiber gratings, become 128 mutually non-interfering channels of the code domain, · re-matching - · 纟 corresponding county transceiver II, that is, Congfa The sigmoid converter of the splicing transceiver requires a bandwidth of $ nanometer to allow the 128 fiber gratings to function. In addition, the optical code combination needs to take into account the light receiving (four) sensitivity, too low the code is insufficient for the mobile optical receiver, and secondly, the self-correlation (Amoco wall) light energy at the time of decoding is also considered, and there is a low correlation between the different codes. The total light energy (Cr〇ss correlation) is the signal-to-noise ratio of the communication principle (along the 吣Ratio). So 2 exP〇nential (ip) so many optical code combinations, in fact, only select the best and effective 128. The burst-type photoelectric conversion transceiver of each channel can turn off its light generator when no data is sent, which can avoid interference with the operation of other channels. In this way, the signal to noise ratio is increased and the error rate of the transceiver is reduced. Because the three-terminal fiber grating is optically coupled, the going direction and the incoming direction are different optical codes, and the optical transmitter and the optical receiver are connected in the space. In terms of space, the difference is 180 degrees, so in winter, it becomes a direction. Three-terminal optocoupler. Referring to Figure 4, the system operation architecture diagram of the fiber-optic grating switching module of the present invention, an external optical signal is transmitted through the external connection fiber, and is connected to the Line card #1 from the Next Destination position. After entering Line card #1, the input signal data converted into an electrical signal, the 14 200821648 implicit destination address in the signal header, will be explained by the Line Card (4) system software, and it is known where to go to the information. . For example, to go to the Line card, this message is written to the u plus _ k Data 8 shell buffer 4〇1. The data buffer has many forms, and is not limited to what form. At this point, if the greedy buffer directly sends the data to the destination (4), it will encounter great trouble. Because it is the local speed, the number is quickly attenuated and cannot be sent to the destination. If you choose to send it to a multi-purpose destination, it is difficult to do it, you must rely on the exchange system to do it. The present invention can solve these two problems. First, the data sent from the data buffer is converted into optical signal data by an electric light converter (E/O, Electrical Signal -· convert t0 〇Pticai Signal) 4〇6. It is sent to the transmitting end (Tx5 Transmitter) of the directional fiber-optic grating 3 end optical amplifier, which is then encoded in the optical domain and then sent out to the multi-optical coupler. The following coding principles and operation instructions are as follows: Line card #1 Τχ Data g and card #8 Rx Data 1 fiber grating is the same code, forming a unique channel in the wavelength domain of light. ^ This card #8 Tx Data 1 is the same code as the Line card #1 Rx Data 8 fiber grating, which is similar to another unique optical channel. Note that Line card #1 Tx Data 8 and Line card #1 Rx Data 8 Light _ • Fiber gratings are different codes because one is the go channel and the other is the incoming channel, and for Linecard #8 Tx Data 1 and Line card #8.Rx Data 1 is just a reverse symmetric channel. The same reason Line card #1 Tx Data 2 and Line card #2 Rx Data 1 Fiber Bragg grating is the same code, Line card #2 Tx Data 1 and Line card #1 Rx Data 2 fiber grating are the same code. The rest and so on. The operation of this type of operation is equivalent to completing the exchange function. There are 56 unique channels in Figure 4, in which the content of the optical signal is encoded and can not interfere with each other at any time. What is important is that the going and going fiber gratings are coded and decoded differently, but the same code is used for the corresponding purpose fiber grating. 15 200821648 So Τχ12 and Τχ13 or other Τχ are different encoding fiber gratings. Similarly, it is different from Rxl3 or other Rx decoding fiber gratings. The coded Line card #8 Tx Data 1 fiber optic grating modulation light, after a multi-pair optocoupler 405, a small part of the light and other 埠 light will be sent to the fiber grating before the Linecard #1 'this fiber grating only It will let the Line card #8 Tx Data 1 fiber optic grating pass the light, and block the other modulated light, which is the fiber grating decoding function. Linecard#1 8 before the fiber grating allows the Line card #8 TxDatal fiber grating to pass the modulated light, through the photoelectric 10 converter (〇疋, 〇 PticaI Signal convert to Electrical Signal), the light energy is converted into electricity 4 The data is stored in the Line card #1 Rx Data 8 electrical buffer 402. This buffer is also not fixed. The type is chosen by the parent. Line card #1 Rx Data 8 The electrical information stored in the electrical buffer will be converted into an optical signal by the system software at the appropriate time and sent by the Next Destination of the Une card #1. And so on, the input signal data of the Next Destination of other Line Cards: according to the implied destination address in the signal header, the exchange function is also completed, and the destination is reached. Please refer to FIG. 5' is a block diagram of the fiber grating switching module of the present invention. The entire optical path structure and circuit are combined. There are 8 interface cards (Line Card) combined with the optical path architecture, from Line Card #1 to Line Card # 8, the function of each Line Card circuit module is the same. A packet message from the Next Destination is sent from the transport interface TraMport Interface to the Line.

The Card is converted into electrical signal information; this electrical signal packet will be interpreted into a Data Buffer and then converted into optical signal, which will pass through the Fiber Bragg Grating Array Coder. /Decoder) to form 16 200821648 optical modulation signals containing specific method codes, which are transmitted with information and wavelength factor-encoded modulated light to a multi-pair optical coupler with multiple optical switches. The multi-pair optical coupler receives the modulated light of different codes reported by the multi-channel transmitting end, mixes them and distributes them to the receiving end of each optical switching module channel. The receiving end of an optical switching module channel, from the seemingly chaotic light, uses a decoding fiber, and the grating filters out the optical data information signal sent by the corresponding transmitting end, and then returns to the electrical signal information through the photoelectric transponder, and saves Go to the Receive Data Buffer. The purpose Line Card interprets it and sends it to the next far end through the Transport Interface.

Destinati〇n). This is the process by which a packet of information is exchanged by the fiber Bragg grating switching module of the present invention. Please refer to FIG. 6 ' is an optical path connection diagram of the fiber grating switching module of the present invention. The eight 8X8 multi-pair optical couplers 60 are connected to eight one-to-multiple optical couplers 602, one for each pair of optical couplers. Eight 8-terminal fiber grating couplers 603 are connected, of which seven are used, one for maintenance management. The output-in common terminal 301 of the 3-terminal fiber grating coupler is connected to a pair of multi-optical couplers, the end of which is connected to the subsequent circuit transmission end, and the Rx terminal is connected to the subsequent circuit receiving end. The connection of the six optical paths of the present invention forms 56 optical switching channels. In the process, the electrical data information exchanged by the father is sent to one of the plurality of transmitting ends of the switching module. Converting it into an optical data information signal via a burst-type photoelectric conversion transceiver, and the optical signal passes through a light-gearer composed of a fiber optic shed to form a light-modulated signal encoded by a specific method. The modulated light, which carries the information and wavelength factor codes, is transmitted to a multi-pair optical coupler with multiple light switches. The multi-switch optical switching center will transmit/transmit the light to the optical switching module channel to receive the 200821648 terminal. The receiving end of a channel of an optical switching module filters out the optical data information signal sent by the transmitting end from the seemingly chaotic light, and then uses the photoelectric conversion circuit to restore the information to the electrical data. The transmitter of the burst-type photoelectric conversion transceiver, if the data is i, it emits light, and the data is 〇, then it does not emit light. It seems to be taken for granted. However, the laser source of the transmitter, due to its natural characteristics, cannot be illuminated or not. When there is no modulation, it will enter the LED (Light Emission Diode) mode, causing interference sources for his transceiver. By using the prediction and phase comparison control circuit of the data to control the illuminating DC supply circuit of the laser source, the purpose of the optical information signal bursting can be achieved. Never enter the LED mode. The communication of the optical medium is for energy transfer, and the phase shift caused by the fiber grating coding is negligible. The receiving end is the energy received in a short time, as the basis for judging whether the signal is present or not. This is the way in which light passes through a coded fiber grating to control the amount of light passing through the _ energy as a means of transmitting information signals. _ Traditional code division multiplexing circuit filtering technology, judging the channel, solving the information signal, the circuit, _ 'cost is expensive. The present invention is a cross-code multiplexing application of the optical domain, which is relatively inexpensive. - Qiao _ Combine the concept of code k with fiber grating to establish a channel, fiber grating combined with optical coupler to become a light direction, multi-pair multi-light remixer as a light mixing and light distribution center, these three have a sequential combination, with Other devices suitable for the concept of the Internet (IPJntemetprotocol), such as the input and output circuits and memory, are made as switching modules. The fiber grating switching module provided by the invention has the following advantages when compared with the above cited documents and other technologies: 18 200821648 1. The invention can greatly improve the data exchange speed. 2. The invention can reduce the cost and reduce the cost, and can also be used to improve the exchange efficiency. The economic benefit is very obvious, especially when the traditional circuit switching method is high-speed, it is easy to emit electromagnetic radiation and pollute the environment. The detailed description above is a detailed description of one of the possible embodiments of the present invention, but the embodiment is not equivalent to the use of the skill of the present invention. It should be included in the scope of this patent. As far as I know, this case is not only innovative in terms of space type, but also can enhance the above-mentioned multiple functions compared with the customary items. It should fully comply with the statutory invention patents of novelty and progressiveness. You have approved this invention patent application, in order to invent invention, to the sense of virtue. BRIEF DESCRIPTION OF THE DRAWINGS Figure 1 is a schematic diagram of a fiber grating of the fiber grating switching module; Figure 2 is a schematic diagram of a 3-terminal fiber grating structure of the fiber grating switching module; Figure 3 is a 3-terminal component of the fiber grating switching module Figure 4 is a block diagram of the system of the fiber grating switching module; Figure 5 is a block diagram of the fiber grating switching module; and Figure 6 is an optical path connection diagram of the fiber grating switching module. [Main component symbol description] 101 fiber grating 201 3 end fiber grating 301 fiber light thumb common end 302 fiber grating transmission end 303 fiber grating receiving end 19 200821648 4〇1 interface card information signal output data buffer 4〇2 interface card Information signal input data buffer 403 Fiber grating array 404 One-to-many optical coupler connection 405 Multi-pair optical coupler application 406 burst photoelectric conversion transceiver 601 multi-pair optical coupler connection 602 One-to-many light Coupler Connection 603 Fiber Bragg Grating Array 20

Claims (1)

200821648 X. Patent application scope: 1. A fiber grating switching module, comprising: a plurality of multi-optical couplers, which are composed of fiber gratings with codec function, and are applied by encoding and decoding fiber gratings. The transmitting end and the receiving end of the light; - the multi-to-multiple optical coupling H, combined with the multi-pair multi-optical multiplexer, the modulated light of the plurality of encoded fiber gratings, and the good (10) fixed code is reliable. To form an exchange effect; burst-type photoelectric conversion transceiver H, is combined with - multi-optical coupling II, which is to identify whether there is data transmission and reception; the use of fiber grating filter characteristics, directional optical coupling In the device, the code and decoder are designed as optical domains, and a pair of codes and decoders are established as channels, and a pair of optical multiplexers are used to fabricate the coding and decoding fiber gratings. The optical data channel of Duoguang Xiaoma has a difference between the going and the direction; then the wavelength factor is used as the method of the wave, and the function of the fiber grating is mapped; and the tandem and dispatch of the multi-pair optocoupler is reused. Exchange module composed of a fiber grating, to achieve multi-port data information, the optical domain switching. For example, the fiber-optic grating switching module described in the patent scope of the first aspect, wherein the fiber-optic grating code-coding system uses the principle of code division multiple access (CDMA) for exchange codec. 3. The fiber grating switching module according to claim 1, wherein the one-to-multi-optical combiner is a directional three-terminal optical coupler, which is composed of a fiber grating with a codec function for exchange. . The fiber-optic grating switching module of claim 1, wherein the multi-pair multi-glossor is an optical coupler having bidirectionality for switching. The FBG switching module of claim 1, wherein the channel is formed by pairing the transmitting end and the receiving end with the same code for switching. 6. The fiber-optic grating switching module according to claim 1, wherein the exchange of the multi-data information is performed by using orthogonal data coding principles to design 128 or more codes, and the codes are mapped to the fiber grating. A code and decoder for optical domain switching. twenty two