CN102064913B - Optical fiber module access system and method - Google Patents
Optical fiber module access system and method Download PDFInfo
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- CN102064913B CN102064913B CN201010557324.7A CN201010557324A CN102064913B CN 102064913 B CN102064913 B CN 102064913B CN 201010557324 A CN201010557324 A CN 201010557324A CN 102064913 B CN102064913 B CN 102064913B
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Abstract
The invention discloses an optical fiber module access system and a method, which can identify broadband type of an inserted optical fiber module according to the read broadband type information and automatically set a data communication link to be matched with the inserted optical fiber module, thereby one optical fiber module can match various optical fiber modules in different broadband types.
Description
Technical field
The present invention relates to data communication technology field, particularly relate to a kind of access system for optical fiber module and method.
Background technology
Optical fiber is because conductive performance is good, and transport information capacity is large, and transmission antijamming capability is strong, thereby is widely used in the communications field.Optical fiber need to be connected with each communication apparatus by optic module.
In order to be connected with optic module, many communication apparatus (as: switch) all have the interface of optic module.The optic module being widely used now can be divided into two kinds of 100M and 1000M according to bandwidth, and the interface of existing optic module also can be divided into two kinds, the interface of coupling 100M optic module and the interface of coupling 1000M optic module.
Yet the interface of optic module of the prior art all can only mate a kind of optic module wherein, cannot realize an interface and mate with the optic module of different bandwidth type.
Summary of the invention
For solving the problems of the technologies described above, the embodiment of the present invention provides a kind of access system for optical fiber module and method, the object of mating with the optic module of multiple different bandwidth type to realize an optic module interface, and technical scheme is as follows:
, comprising: controller, network self-adapting control circuit, optical fiber interface,
Described controller is connected with control bus by the first data link with described network self-adapting control circuit;
Described controller is connected by optic module identification bus with described optical fiber interface;
Described network self-adapting control circuit is connected by the second data link with described optical fiber interface;
Described controller, by the identification of optic module identification bus, insert the bandwidth types of the optic module of described optical fiber interface, and according to described bandwidth types, the pattern that described the first data link is set to match with described bandwidth types, by described the second data link of described control bus, be set to the pattern matching with described bandwidth types.
Preferably, described controller, comprising:
Optic module recognition unit, for identifying the bandwidth types of the optic module inserting by optic module identification bus;
The first setting unit, for the bandwidth types of identifying according to described optic module recognition unit, the communication interface of described the first data link is set to the communication interface matching with described bandwidth types;
The second setting unit, for according to the bandwidth types of described optic module recognition unit identification, the signal rate by described the second data link of described control bus is set to the signal rate matching with described bandwidth types; The coded system of described the second data link signal transmission is set to the coded system matching with described bandwidth types.
Preferably, the communication interface of described the first data link is network media MAC layer MAC interface,
In the situation that the bandwidth types of described optic module recognition unit identification is 100M, the described MAC interface of described the first setting unit is set to the Media Independent Interface RMII simplifying;
In the situation that the bandwidth types of described optic module recognition unit identification is 1000M, the described MAC interface of described the first setting unit is set to the gigabit Media Independent Interface RGMII simplifying.
Preferably, the communication interface of described the second data link is serializer/de-serializers SERDES interface,
In the situation that the bandwidth types of described optic module recognition unit identification is 100M, the coded system that the speed of described the second setting unit by the described SERDES interface of described control bus signal transmission is set to 125Mbps, described SERDES interface institute signal transmission is set to 4B/5B;
In the situation that the bandwidth types of described optic module recognition unit identification is 1000M, the coded system that the speed of described the second setting unit by the described SERDES interface of described control bus signal transmission is set to 1.25Gbps, described SERDES interface institute signal transmission is set to 8B/10B.
Preferably, described control bus is management interface MI bus;
Described optic module identification bus is iic bus.
Preferably, described controller also comprises: communication check module,
Described communication check module, for after described the first data link and described the second data link be set at described controller be the pattern matching with described bandwidth types, check whether the signal that described SERDES interface arranges rear transmission matches with described bandwidth types, if so, start data communication between described optic module and described optical fiber interface, start data communication between described optical fiber interface and described network self-adapting control circuit, start the data communication between described network self-adapting control circuit and described controller.
Preferably, described communication check module checks by loop back mode whether the signal that described SERDES interface arranges rear transmission matches with described bandwidth types.
The present invention also provides a kind of optic module cut-in method, comprising:
Controller inserts the bandwidth types of the optic module of described optical fiber interface by being connected to the identification of optic module identification bus between controller and optical fiber interface, and according to described bandwidth types be connected to the pattern that the first data link is set to and described bandwidth types matches between described controller and network self-adapting control circuit, the second data link being connected between described network self-adapting control circuit and described optical fiber interface by control bus is set to the pattern matching with described bandwidth types.
Preferably, described the first data link is network media MAC layer MAC link,
In the situation that the bandwidth types of described controller identification is 100M, the described MAC interface of described controller is set to the Media Independent Interface RMII simplifying;
In the situation that the bandwidth types of described controller identification is 1000M, the described MAC interface of described controller is set to the gigabit Media Independent Interface RGMII simplifying.
Preferably, the interface of described the second data link is serializer/de-serializers SERDES interface,
In the situation that the bandwidth types of described optic module recognition unit identification is 100M, the coded system that the speed of described the second setting unit by the described SERDES interface of described control bus signal transmission is set to 125Mbps, described SERDES interface institute signal transmission is set to 4B/5B;
In the situation that the bandwidth types of described optic module recognition unit identification is 1000M, the coded system that the speed of described the second setting unit by the described SERDES interface of described control bus signal transmission is set to 1.25Gbps, described SERDES interface institute signal transmission is set to 8B/10B.
From above technical scheme, the wide-band type of the optic module that a kind of access system for optical fiber module provided by the invention and method can be inserted according to the wide-band type information identification of reading the pattern that Lookup protocol data link matches for the optic module with inserted, thus make an optic module interface can mate the optic module of multiple different wide-band type.
Accompanying drawing explanation
In order to be illustrated more clearly in the embodiment of the present invention or technical scheme of the prior art, to the accompanying drawing of required use in embodiment or description of the Prior Art be briefly described below, apparently, the accompanying drawing the following describes is only some embodiment that record in the present invention, for those of ordinary skills, can also obtain according to these accompanying drawings other accompanying drawing.
Fig. 1 is the structural representation of a kind of access system for optical fiber module of the embodiment of the present invention;
Fig. 2 is the pin schematic diagram of optical fiber interface of the embodiment of the present invention of the embodiment of the present invention;
Fig. 3 is the structural representation of the another kind of access system for optical fiber module of the embodiment of the present invention;
Fig. 4 is the structural representation of the another kind of access system for optical fiber module of the embodiment of the present invention;
The flow chart of the another kind of optic module cut-in method that Fig. 5 provides for the embodiment of the present invention.
Embodiment
In order to make those skilled in the art person understand better the technical scheme in the present invention, below in conjunction with the accompanying drawing in the embodiment of the present invention, technical scheme in the embodiment of the present invention is clearly and completely described, obviously, described embodiment is only the present invention's part embodiment, rather than whole embodiment.Embodiment based in the present invention, the every other embodiment that those of ordinary skills obtain, should belong to the scope of protection of the invention.
As shown in Figure 1, a kind of access system for optical fiber module that the embodiment of the present invention provides comprises: controller 100, network self-adapting control circuit 200, optical fiber interface 300,
The interface of the first data link 400 can be network media MAC layer MAC interface.The interface of the first data link 400 can also be other interfaces, and the present invention does not limit at this.
Optic module identification bus 700 can be iic bus.
Network self-adapting control circuit 200 is connected by the second data link 600 with optical fiber interface 300;
The interface of the second data link 600 can be serializer/de-serializers SERDES interface.
It should be noted that, it is identical that the corresponding optical fiber interface of 100M optic module forms with pin definitions with the physics of the corresponding optical fiber interface of 1000M optic module.
Below a kind of pin definitions of optic module is introduced:
As shown in Figure 2, the optic module interface of the embodiment of the present invention comprises contact-making surface (Top of board) and lower contact-making surface (Bottom of board), altogether 20 pins.Title and the purposes of each pin are as shown in table 1:
| Pin numbering | | Purposes | |
| 1 | VEET | The earth signal of transmitting |
|
| 2 | TXFault | |
|
| 3 | TX Disable | Do not enable transmitted |
|
| 4 | MOD_DEF(2) | The SDA data-signal of |
|
| 5 | MOD_DEF(1) | The SCL clock signal of |
|
| 6 | MOD_DEF | Module |
|
| 7 | Rate Select | Do not need to connect | |
| 8 | | Dropout indication | |
| 9 | VEER | The earth signal of receiving |
|
| 10 | VEER | The earth signal of receiving |
|
| 11 | VEER | The earth signal of receiving |
|
| 12 | RD- | Receive SERDES bus |
|
| 13 | RD+ | Receive SERDES bus |
|
| 14 | VEER | The earth signal of receiving |
|
| 15 | VCCR | The power supply signal of receiving |
|
| 16 | VCCT | The power supply signal of transmitting |
|
| 17 | VEET | The earth signal of transmitting |
|
| 18 | TD+ | Send SERDES bus |
|
| 19 | TD+ | Send SERDES bus |
|
| 20 | VEET | The earth signal of transmitting portion |
Table 1
Wherein, include the information of difference 100M and 1000M optic module in the information that pin 4 and pin 5 send, controller 100 can be connected with these two pins, to identify the bandwidth types of the optic module of insertion.
Whether controller 100 can be detected and be had optic module to insert by optic module identification bus 700, known by table 1, can, by pin 6 is detected, after optic module insertion having been detected, then carry out the identification of optic module bandwidth types.
It should be noted that, because physical composition and the pin definitions of optical fiber interface are identical, the difference between the two of the device that existing and 100M optic module connect and the device being connected with 1000M optic module is only that the pattern of communication link is different, as: the coded system of interface type signal rate, signal etc.So the pattern that only need to communication link be set according to optic module matches with the optic module inserting.
The wide-band type of the optic module that a kind of access system for optical fiber module provided by the invention can insert according to the bandwidth types information identification of reading the pattern that Lookup protocol data link matches for the optic module with inserted, thus make an optic module interface can mate the optic module of multiple different wide-band type.
As shown in Figure 3, in the another kind of access system for optical fiber module of the embodiment of the present invention, described controller 100, can comprise:
Optic module recognition unit 101, for identifying the bandwidth types of the optic module inserting by optic module identification bus 700;
The first setting unit 102, for the bandwidth types of identifying according to described optic module recognition unit 101, the communication interface of described the first data link 400 is set to the communication interface matching with described bandwidth types;
The second setting unit 103, for according to the bandwidth types of described optic module recognition unit 101 identifications, the signal rate by described the second data link 600 of described control bus 500 is set to the signal rate matching with described bandwidth types; The coded system of described the second data link 600 signal transmissions is set to the coded system matching with described bandwidth types.
As shown in Figure 3, the interface of the second data link 600 is serializer/de-serializers SERDES interface,
In the situation that the bandwidth types of described optic module recognition unit 101 identifications is 100M, described the second setting unit 103 is set to 125Mbps by the speed of the described SERDES interface of described control bus 500 signal transmission, the coded system of described SERDES interface institute signal transmission is set to 4B/5B, to match with the optic module of 100M.
Wherein, 4B/5B is the Signal coding mode of 4 byte/5 bytes, and it supports the speed up to 100Mbps on optical fiber.
In the situation that the bandwidth types of described optic module recognition unit 101 identifications is 1000M, described the second setting unit 103 is set to 1.25Gbps by the speed of the described SERDES interface of described control bus 500 signal transmission, the coded system of described SERDES interface institute signal transmission is set to 8B/10B, to match with the optic module of 1000M.
Wherein, 8B/10B is the Signal coding mode of 8 byte/10 bytes, and it supports the speed up to 1000Mbps on optical fiber.
As shown in Figure 3, the interface of the first data link 400 is network media MAC layer MAC interface.
In the situation that the bandwidth types of described optic module recognition unit 101 identifications is 100M, the described MAC interface of described the first setting unit 102 is set to the Media Independent Interface RMII simplifying.
In the situation that the bandwidth types of described optic module recognition unit 101 identifications is 1000M, the described MAC interface of described the first setting unit 102 is set to the gigabit Media Independent Interface RGMII simplifying.
As shown in Figure 4, the another kind of access system for optical fiber module of the embodiment of the present invention and the difference of the system shown in Fig. 3 be, controller 100 can also comprise: communication check module 104, is connected with network self-adapting control circuit 200 by control bus 500.
Described communication check module 104, for at described controller 100, arrange described the first data link 400 and described the second data link 600 for the pattern matching with described bandwidth types after, check whether the signal that described SERDES interface arranges rear transmission matches with described bandwidth types, if so, start the data communication of 100 of the data communication of the optic module insert and 300 of optical fiber interfaces, the data communication that starts 200 of optical fiber interface 300 and network self-adapting control circuits, startup network self-adapting control circuit 200 and controllers.
Wherein, communication check module 104 checks that whether the signal that described SERDES interface arranges rear transmission with the mode that described bandwidth types matches can be:
After SERDES interface arranges, by control bus 500, make network self-adapting circuit 200 to optical fiber interface 300, send an experimental signal by SERDES interface, whether speed and the coded system of by communication check module 104, by control bus 500, controlling the network self-adapting control circuit 200 detection experimental signals that send mate with inserted optic module.
It should be noted that, the process of above transmission experimental signal is not data communication process, but the standard implementation of the technical physical layer of universal network.
Described communication check module 104 can check whether the signal that described SERDES interface arranges rear transmission matches with described bandwidth types by loop back mode.
Certainly, in other embodiments of the invention, controller 100 can also comprise abnormality processing module, for the signal of transmission after SERDES interface arranges, does not match with described bandwidth types and during the bandwidth types of the optic module that None-identified inserts, carries out corresponding abnormality processing.It will be appreciated by persons skilled in the art that described abnormality processing can comprise at least one action such as halt system operation, warning.
While for convenience of description, describing above device, with function, being divided into various unit describes respectively.Certainly, implement when of the present invention can Ba Ge unit function in same or a plurality of software and/or hardware, realize.
System embodiment described above is only schematic, the wherein said unit as separating component explanation can or can not be also physically to separate, the parts that show as unit can be or can not be also physical locations, can be positioned at a place, or also can be distributed in a plurality of network element.Can select according to the actual needs some or all of module wherein to realize the object of the present embodiment scheme.Those of ordinary skills, in the situation that not paying creative work, are appreciated that and implement.
Corresponding to system embodiment above, the present invention also provides a kind of optic module cut-in method.
A kind of optic module cut-in method that the embodiment of the present invention provides comprises:
Controller is by being connected to the bandwidth types of the optic module of the described optical fiber interface of optic module identification bus identification insertion between controller and optical fiber interface, and according to described bandwidth types, be connected to the pattern that the first data link is set to and described bandwidth types matches between described controller and network self-adapting control circuit, the second data link being connected between described network self-adapting control circuit and described optical fiber interface by control bus is set to the pattern matching with described bandwidth types.
Wherein, described the first data link can be network media MAC layer MAC interface:
In the situation that described bandwidth types is 100M, described MAC interface is set to the Media Independent Interface RMII simplifying;
In the situation that described bandwidth types is 1000M, described MAC interface is set to the gigabit Media Independent Interface RGMII simplifying.
Wherein, described the second data link can be serializer/de-serializers SERDES interface:
In the situation that described bandwidth types is 100M, the speed of described SERDES interface signal transmission is set to 125Mbps, and the coded system of described SERDES interface institute signal transmission is set to 4B/5B;
In the situation that described bandwidth types is 1000M, the speed of described SERDES interface signal transmission is set to 1.25Gbps, and the coded system of described SERDES interface institute signal transmission is set to 8B/10B.
The wide-band type of the optic module that a kind of optic module cut-in method provided by the invention can insert according to the wide-band type information identification of reading the pattern that Lookup protocol data link matches for the optic module with inserted, thus make an optic module interface can mate the optic module of multiple different wide-band type.
As shown in Figure 5, the another kind of optic module cut-in method that the embodiment of the present invention provides comprises:
S101, beginning;
S102, judged whether that optic module inserts, if so, performed step S103, otherwise, execution step S101;
Whether the bandwidth types of the optic module that S103, judgement are inserted is 100M, if so, performs step S105, otherwise execution step S104;
Whether the bandwidth types of the optic module that S104, judgement are inserted is 1000M, if so, performs step S106, otherwise execution step S109;
Certainly, also can first judge whether the bandwidth types of the optic module of insertion is 1000M, and then whether the bandwidth types of the optic module of judgement insertion is 100M.
S105, communication link is set for the pattern of mating with 100M;
Concrete, the first communication link and second communication link are set to the pattern of mating with 100M.
Wherein, described the first data link can be network media MAC layer MAC interface:
In the situation that the bandwidth types of described optic module recognition unit identification is 100M, the described MAC interface of described the first setting unit is set to the Media Independent Interface RMII simplifying.
Wherein, the interface of described the second data link is serializer/de-serializers SERDES interface:
In the situation that the bandwidth types of described optic module recognition unit identification is 100M, the coded system that the speed of described the second setting unit by the described SERDES interface of described control bus signal transmission is set to 125Mbps, described SERDES interface institute signal transmission is set to 4B/5B.
S106, communication link is set for the pattern of mating with 1000M;
Concrete, the first communication link and second communication link are set to the pattern of mating with 100M.
Wherein, described the first data link can be network media MAC layer MAC interface:
In the situation that the bandwidth types of described optic module recognition unit identification is 1000M, the described MAC interface of described the first setting unit is set to the gigabit Media Independent Interface RGMII simplifying.
Wherein, the interface of described the second data link is serializer/de-serializers SERDES interface:
In the situation that the bandwidth types of described optic module recognition unit identification is 1000M, the coded system that the speed of described the second setting unit by the described SERDES interface of described control bus signal transmission is set to 1.25Gbps, described SERDES interface signal transmission is set to 8B/10B.
Whether S107, inspection SERDES interface arrange rear signal transmission and mate with the bandwidth types of the optic module inserting, and if so, perform step S108, otherwise execution step S109;
Wherein, check that whether the signal that SERDES interface arranges rear transmission with the mode that described bandwidth types matches can be: after SERDES interface arranges, by control bus, make network self-adapting circuit to optical fiber interface, send an experimental signal by SERDES interface, whether speed and the coded system of by communication check module, by control bus, controlling network self-adapting experimental signal that electric circuit inspection is sent mate with inserted optic module.
It should be noted that, the process of above transmission experimental signal is not data communication process.
S108, start data communication between described optic module and described optical fiber interface, start data communication between described optical fiber interface and described network self-adapting control circuit, start communicating by letter between described network self-adapting control circuit and described controller.
S109, abnormality processing.
It will be appreciated by persons skilled in the art that described abnormality processing can comprise at least one action such as halt system operation, warning.
As seen through the above description of the embodiments, those skilled in the art can be well understood to the mode that the present invention can add essential general hardware platform by software and realizes.Understanding based on such, the part that technical scheme of the present invention contributes to prior art in essence in other words can embody with the form of software product, this computer software product can be stored in storage medium, as ROM/RAM, magnetic disc, CD etc., comprise that some instructions are with so that a computer equipment (can be personal computer, server, or the network equipment etc.) carry out the method described in some part of each embodiment of the present invention or embodiment.
Each embodiment in this specification all adopts the mode of going forward one by one to describe, between each embodiment identical similar part mutually referring to, each embodiment stresses is the difference with other embodiment.Especially, for embodiment of the method, because it is substantially similar in appearance to system embodiment, so describe fairly simplely, relevant part is referring to the part explanation of system embodiment.
The above is only the specific embodiment of the present invention; it should be pointed out that for those skilled in the art, under the premise without departing from the principles of the invention; can also make some improvements and modifications, these improvements and modifications also should be considered as protection scope of the present invention.
Claims (4)
1. an access system for optical fiber module, is characterized in that, comprising: controller, network self-adapting control circuit, optical fiber interface,
Described controller is connected with control bus by the first data link with described network self-adapting control circuit;
Described controller is connected by optic module identification bus with described optical fiber interface;
Described network self-adapting control circuit is connected by the second data link with described optical fiber interface;
Described controller, by the identification of optic module identification bus, insert the bandwidth types of the optic module of described optical fiber interface, and according to described bandwidth types, the pattern that described the first data link is set to match with described bandwidth types, by described the second data link of described control bus, be set to the pattern matching with described bandwidth types;
Wherein, described controller, comprising:
Optic module recognition unit, for identifying the bandwidth types of the optic module inserting by optic module identification bus;
The first setting unit, for the bandwidth types of identifying according to described optic module recognition unit, the communication interface of described the first data link is set to the communication interface matching with described bandwidth types;
The second setting unit, for according to the bandwidth types of described optic module recognition unit identification, the signal rate by described the second data link of described control bus is set to the signal rate matching with described bandwidth types; The coded system of described the second data link signal transmission is set to the coded system matching with described bandwidth types;
Wherein, described control bus is management interface MI bus;
Wherein, described optic module identification bus is iic bus;
Wherein, the communication interface of described the first data link is network media MAC layer MAC interface,
In the situation that the bandwidth types of described optic module recognition unit identification is 100M, the described MAC interface of described the first setting unit is set to the Media Independent Interface RMII simplifying;
In the situation that the bandwidth types of described optic module recognition unit identification is 1000M, the described MAC interface of described the first setting unit is set to the gigabit Media Independent Interface RGMII simplifying;
Wherein, the communication interface of described the second data link is serializer/de-serializers SERDES interface,
In the situation that the bandwidth types of described optic module recognition unit identification is 100M, the coded system that the speed of described the second setting unit by the described SERDES interface of described control bus signal transmission is set to 125Mbps, described SERDES interface institute signal transmission is set to 4B/5B;
In the situation that the bandwidth types of described optic module recognition unit identification is 1000M, the coded system that the speed of described the second setting unit by the described SERDES interface of described control bus signal transmission is set to 1.25Gbps, described SERDES interface institute signal transmission is set to 8B/10B.
2. system according to claim 1, is characterized in that, described controller also comprises: communication check module,
Described communication check module, for after described the first data link and described the second data link be set at described controller be the pattern matching with described bandwidth types, check whether the signal that described SERDES interface arranges rear transmission matches with described bandwidth types, if so, start data communication between described optic module and described optical fiber interface, start data communication between described optical fiber interface and described network self-adapting control circuit, start the data communication between described network self-adapting control circuit and described controller.
3. system according to claim 2, is characterized in that, described communication check module checks by loop back mode whether the signal that described SERDES interface arranges rear transmission matches with described bandwidth types.
4. an optic module cut-in method, is characterized in that, comprising:
Controller inserts the bandwidth types of the optic module of described optical fiber interface by being connected to the identification of optic module identification bus between controller and optical fiber interface, and according to described bandwidth types be connected to the pattern that the first data link is set to and described bandwidth types matches between described controller and network self-adapting control circuit, the second data link being connected between described network self-adapting control circuit and described optical fiber interface by control bus is set to the pattern matching with described bandwidth types;
Wherein, described controller, comprising:
Optic module recognition unit, for identifying the bandwidth types of the optic module inserting by optic module identification bus;
The first setting unit, for the bandwidth types of identifying according to described optic module recognition unit, the communication interface of described the first data link is set to the communication interface matching with described bandwidth types;
The second setting unit, for according to the bandwidth types of described optic module recognition unit identification, the signal rate by described the second data link of described control bus is set to the signal rate matching with described bandwidth types; The coded system of described the second data link signal transmission is set to the coded system matching with described bandwidth types;
Wherein, described control bus is management interface MI bus;
Wherein, described optic module identification bus is iic bus; Wherein, described the first data link is network media MAC layer MAC link,
In the situation that the bandwidth types of described controller identification is 100M, the described MAC interface of described controller is set to the Media Independent Interface RMII simplifying;
In the situation that the bandwidth types of described controller identification is 1000M, the described MAC interface of described controller is set to the gigabit Media Independent Interface RGMII simplifying;
Wherein, the interface of described the second data link is serializer/de-serializers SERDES interface,
In the situation that the bandwidth types of described optic module recognition unit identification is 100M, the coded system that the speed of described the second setting unit by the described SERDES interface of described control bus signal transmission is set to 125Mbps, described SERDES interface institute signal transmission is set to 4B/5B;
In the situation that the bandwidth types of described optic module recognition unit identification is 1000M, the coded system that the speed of described the second setting unit by the described SERDES interface of described control bus signal transmission is set to 1.25Gbps, described SERDES interface institute signal transmission is set to 8B/10B.
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| CN108462659A (en) * | 2017-02-17 | 2018-08-28 | 北京国基科技股份有限公司 | The network switching equipment and its data transmission method |
| CN108718294A (en) * | 2018-04-17 | 2018-10-30 | 上海希形科技有限公司 | Communication means and communication device suitable for control system |
| CN114285464B (en) * | 2021-12-16 | 2023-04-14 | 中航航空电子有限公司 | Optical fiber transmission rate self-matching device and system |
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| CN201869201U (en) * | 2010-11-23 | 2011-06-15 | 成都爱斯顿科技有限公司 | Access system for optical fiber module |
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| CN101039148A (en) * | 2007-02-07 | 2007-09-19 | 华为技术有限公司 | Optical module and method and network equipment for supporting GE optical connector and FE optical connector |
| CN101505233A (en) * | 2009-02-18 | 2009-08-12 | 华为技术有限公司 | Method for switching optical transmission physical channel and physical interface equipment |
| CN201869201U (en) * | 2010-11-23 | 2011-06-15 | 成都爱斯顿科技有限公司 | Access system for optical fiber module |
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