CN203761399U - Optical communication equipment of single-fiber bi-directional symmetrical rate and system - Google Patents
Optical communication equipment of single-fiber bi-directional symmetrical rate and system Download PDFInfo
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- CN203761399U CN203761399U CN201420103812.4U CN201420103812U CN203761399U CN 203761399 U CN203761399 U CN 203761399U CN 201420103812 U CN201420103812 U CN 201420103812U CN 203761399 U CN203761399 U CN 203761399U
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- 230000003287 optical effect Effects 0.000 title claims abstract description 52
- 230000006854 communication Effects 0.000 title claims abstract description 41
- 238000004891 communication Methods 0.000 title claims abstract description 40
- 239000000835 fiber Substances 0.000 title claims abstract description 32
- 230000005540 biological transmission Effects 0.000 claims abstract description 34
- 239000013307 optical fiber Substances 0.000 claims abstract description 21
- 238000012546 transfer Methods 0.000 claims description 6
- 230000008859 change Effects 0.000 claims description 3
- 230000008054 signal transmission Effects 0.000 abstract description 10
- 238000000034 method Methods 0.000 description 5
- 238000005516 engineering process Methods 0.000 description 4
- 230000008569 process Effects 0.000 description 3
- 238000006243 chemical reaction Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012545 processing Methods 0.000 description 2
- 230000011664 signaling Effects 0.000 description 2
- 230000002159 abnormal effect Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 238000012163 sequencing technique Methods 0.000 description 1
- 230000001360 synchronised effect Effects 0.000 description 1
Abstract
The utility model discloses optical communication equipment of a single-fiber bi-directional symmetrical rate and a system. The equipment and the system are characterized in that the equipment comprises a plurality of Ethernet switching units, a FPGA logical system unit, a serial/unstringing unit and an optical fiber transmit-receive unit; the serial/unstringing unit comprises a serializer and a deserializer; the optical fiber transmit-receive unit is connected to the serializer and the deserializer respectively; the FPGA logical system unit is connected to the plurality of Ethernet switching units respectively and is connected to the serializer and the deserializer. By using the optical communication equipment of the single-fiber bi-directional symmetrical rate and the system, a channel indication signal is added in a transmission signal; an error rate is reduced and an error correction capability is increased so that accuracy of the signal transmission is increased too.
Description
Technical field
The utility model relates to optical communication technique field, particularly relates to a kind of optical communication equipment of processing the single fiber bi-directional symmetrical rate that multichannel ethernet signal converges.
Background technology
In the field of optical transmission device, it is that wanted transmission network signal is carried out to digitized processing that general Ethernet sends optical transmitter and receiver, again these digital signals are carried out to multiplexing process, make the digital signal of multi-path low speed convert a road high speed signal to, and convert this signal to light signal and transmit on optical fiber; And light signal is reduced into the signal of telecommunication by Ethernet reception optical transmitter and receiver, the high speed signal of reduction decomposites original multi-path low speed signal, finally these signals is reduced into the network signal of corresponding path again.
Although Digital Optical Terminal signal transmission quality is high, its transmission means adopts parallel-serial conversion mode, and digital light signal is transmitted in optical fiber in serial transmission mode.General optical transmitter and receiver is at serial transmission signal, especially when multiple signals pool a road signal transmission, because the sequencing of signal transmission can not reasonably arrange, make signal message that receiving terminal receives likely occur the situation of mistake or loss, even if the noiseproof feature of light transmission means is good like this, still can there is the possibility of error code, thereby cause the very high error rate, affect efficiency of transmission.
Utility model content
The purpose of this utility model is to overcome the weak point of above-mentioned transmission technology, provides that a kind of signal transmission quality is high, antijamming capability is strong, optical communication equipment and the system of the single fiber bi-directional symmetrical rate of good operating stability.
For addressing the above problem, the utility model provides a kind of optical communication equipment of single fiber bi-directional symmetrical rate, it is characterized in that, described equipment comprises multiple Ethernet exchangings unit, fpga logic system unit, serial/solution string location and optical fiber transceiving unit, described serial/solution string location comprises serializer and deserializer, described optical fiber transceiving unit connects respectively described serializer and deserializer, described fpga logic system unit connects respectively described multiple Ethernet exchangings unit, and connects described serializer and described deserializer;
Described multiple Ethernet exchangings unit communicates the multichannel external ethernet signal of reception respectively at sending direction with described fpga logic system unit, described fpga logic system unit adds passage index signal in described ethernet signal, then be transferred to described serializer, described serializer adds the described ethernet signal of passage index signal to change into a road serial signal multichannel of reception, and being transferred to described optical fiber transceiving unit, described optical fiber transceiving unit transfers out described serial signal;
Described optical fiber transceiving unit is transferred to received Yi road serial signal in described deserializer at receive direction, described serial signal is changed into multi-path parallel signal by described deserializer, and described multi-path parallel signal is transferred to described fpga logic system unit, described fpga logic system unit is according to the passage index signal in described multi-path parallel signal, respectively described multi-path parallel signal is transferred to accordingly to described multichannel Ethernet exchanging unit, and outer outside by the transmission of described multichannel Ethernet unit.
Wherein, the figure place of described serial/solution string location is 10.
Wherein, PHY chip is arranged in described Ethernet exchanging unit, and described Ethernet exchanging unit communicates by MII interface and external ethernet signal.
Wherein, described fpga logic system unit comprises the ethernet controller with integrated MAC, to communicate with described Ethernet exchanging unit.
Wherein, the communication interface of described Ethernet exchanging unit adopts RJ45 interface.
Wherein, in opposition to each other between each transmission channel of described multiple Ethernet exchangings unit, non-cross and corresponding one by one.
Wherein, the reference clock of the described deserializer on receive direction is provided by the work clock of the signal receiving from the described optical fiber receiving element of correspondence.
Of the present utility model aspect another, a kind of optical communication system of single fiber bi-directional symmetrical rate is provided, it is characterized in that, described system comprises transmission optical transmitter and receiver and receives optical transmitter and receiver, wherein, described transmission optical transmitter and receiver and described reception optical transmitter and receiver all use the optical communication equipment of above-mentioned arbitrary single fiber bi-directional symmetrical rate, and described transmission optical transmitter and receiver is connected by two-way single fiber with described reception optical transmitter and receiver.
The optical communication equipment of the novel described single fiber bi-directional symmetrical rate of this use and system have been used multichannel ethernet signal high speed serialization to conciliate the technology of serial, its transmission is separate and transmit stable, reliable, signal quality is high, and antijamming capability is strong, has increased the utilance of bandwidth simultaneously.And in serial transmission signal, added passage index signal, reduced the error rate and improved error correcting capability, made to improve the accuracy rate of signal transmission, guarantee multichannel ethernet signal path is normally worked.
Brief description of the drawings
Fig. 1 shows the structural representation of the optical communication equipment of single fiber bi-directional symmetrical rate of the present utility model.
Fig. 2 shows the structural representation of the optical communication system of single fiber bi-directional symmetrical rate of the present utility model.
Embodiment
Below in conjunction with drawings and Examples, embodiment of the present utility model is described in further detail.Following examples are used for illustrating the utility model, but are not used for limiting scope of the present utility model.
Fig. 1 shows the structural representation of the optical communication equipment of single fiber bi-directional symmetrical rate of the present utility model.
As shown in Figure 1, the optical communication equipment of single fiber bi-directional symmetrical rate of the present utility model comprises Ethernet exchanging unit 10, fpga logic system unit 20, serial/solution string location 30 and optical fiber transceiving unit 40.
Serial/solution string location 30 comprises serializer 301 and deserializer 302, light Transmit-Receive Unit 40 connects respectively serializer 301 and deserializer 302, fpga logic system unit 20 connects respectively multiple Ethernet exchangings unit 10, and connects serializer 301 and deserializer 302.
At sending direction, multiple Ethernet exchangings unit 10 communicates the multichannel external ethernet signal of reception respectively with fpga logic system unit 20, fpga logic system unit 20 adds passage index signal in ethernet signal, then be transferred to serializer 301, serializer 301 adds the ethernet signal of passage index signal to change into a road serial signal multichannel of reception, and being transferred to optical fiber transceiving unit 40, optical fiber transceiving unit 40 transfers out the serial signal of reception again.
At receive direction, optical fiber transceiving unit 40 is transferred to received Yi road serial signal in deserializer 302, the serial signal of reception is changed into multi-path parallel signal by deserializer 302, and multi-path parallel signal is transferred to fpga logic system unit 20, fpga logic system unit 20 is according to the passage index signal in multi-path parallel signal, respectively multiple signals are transferred to accordingly to multichannel Ethernet exchanging unit 10, and outer outside by 10 transmission of multichannel Ethernet unit.
Ethernet exchanging unit 10 is the chips with physical layer phy interface, communicates business by MII interface and external ethernet signal.Ethernet signal is carried out remote transmitted in both directions by Ethernet exchanging unit 10, reaches signaling channel communication normal, and the signal of multiple Ethernet exchangings unit 10 keeps each transmission channel in opposition to each other in transmission, non-cross and corresponding one by one.
The communication interface of the Ethernet exchanging unit 10 of the present embodiment adopts RJ45 interface 101, but is not limited thereto.
Fpga logic system unit 20 comprises the ethernet controller with integrated MAC, to communicate with Ethernet exchanging unit.Fpga logic system unit unit adds passage index signal in the serial signal of transmission, to judge the information of signal of Ethernet transmission, and can in string conversion process, inerrably distribute the ethernet signal of each passage.Both can utilize channel bank by this form, and can guarantee again in signals transmission, not cause conflict, not only reduce cost, and also reduce the error rate and improved error correcting capability.
The optical communication equipment of the single fiber bi-directional symmetrical rate of the present embodiment utilizes the high-speed transfer node of ethernet physical layer PHY chip as signal transceiver, communicates, then realize high speed transmission of signals by PHY with fpga logic system unit 20 internal macs.This method combines the high speed signal disposal ability of FPGA and the driving force of PHY, can solve various high-speed remotes from handshaking problem.
In this enforcement, serializer 301 and the deserializer 302 of serial/solution string location 30 have embedded clock.For serializer 301, local clock is to have tranmitting data register TCLK that external source is provided, and for deserializer 302, local clock is applied on REFCLK pin, can solve like this bottleneck problem that restricts high-speed transfer due to clock and strictly not synchronizeing of signal.But in order to keep the consistency of each path ethernet signal transmission rate, the reference clock of the deserializer 302 on receive direction is provided by the work clock of the signal receiving.
Because the figure place of the serializer 301 in serial/solution string location 30 and deserializer 302 is defined as 10, adopt the mode of signal transparent transmission, the two-way signaling and 1 the sending/receiving passage index signal thereof that comprise n position nibble in MII interface, its clock rate is 25MHz.Adopt in the present embodiment the high-speed transfer clock signal of 50MHz, just can just the ethernet signal of two 25MHz clock cycle be combined into 10 effectively transmitted signals under the 50MHz clock cycle.Be owing to adding passage index signal in serial signal, this passage index signal is the index signal that is synchronized with the transmission of first passage ethernet signal.As passage index signal, the ethernet signal of two 25MHz clock cycle will be combined into 10 effectively transmitted signals under the 50MHz clock cycle owing to taking a wherein signal.In the internal logic design of fpga logic system unit 20, utilize the passage index signal of ethernet signal sending/receiving, do not changing under the prerequisite of Ethernet transmission rate and information, shorten to 9 effectively transmitted signals under the 50MHz clock cycle, form in the lump 10 effective high-speed serial signals with a bit port index signal and communicate alternately.
The working condition of the optical communication equipment of the single fiber bi-directional symmetrical rate described in embodiments of the invention is as follows:
In the time that the 1st road ethernet signal path arrives, passage index signal is set to a high position; And other multichannel ethernet signal paths are while arriving, passage index signal is set to low level.For deserializer, from 10 useful signals that receive, according to the height set that judges passage index signal, can indicate exactly the signal of first via ethernet signal path, process ethernet signal corresponding to all the other each roads thereby can reduce in order successively.Even if occur in optical fiber communication process like this that communication is when abnormal conditions, correctness and integrality that the ethernet signal path of corresponding multichannel also can inhibit signal, reduce code stream error rate, improves the stability of signal transmission.
Fig. 2 shows the structural representation of the optical communication system of single fiber bi-directional symmetrical rate of the present utility model.
As shown in Figure 2, the optical communication system of the single fiber bi-directional symmetrical rate of the utility model embodiment comprises transmission optical transmitter and receiver 100 and receives optical transmitter and receiver 200.Send optical transmitter and receiver 100 and all use the optical communication equipment of above-mentioned single fiber bi-directional symmetrical rate with reception optical transmitter and receiver 200, and use two-way single fiber 300 to connect communication.
Compared with traditional optical communication equipment and system, optical communication equipment and the system of single fiber bi-directional symmetrical rate described in the utility model have the following advantages:
1, simple in structure, make communication more stable.
2, used multichannel ethernet signal high speed serialization to conciliate the technology of serial, its transmission is separate and transmission is stable, reliable, and signal quality is high, and antijamming capability is strong, increased the utilance of bandwidth simultaneously.
3, in serial transmission signal, add passage index signal, reduced the error rate and improved error correcting capability, made to improve the accuracy rate of signal transmission, guarantee multichannel ethernet signal path is normally worked.
4, ethernet communication interface adopts RJ45 interface, can with the Ethernet card interface compatibility of PC, make communication more convenient.
Although described by reference to the accompanying drawings execution mode of the present utility model, but those skilled in the art can make various modifications and variations in the situation that not departing from spirit and scope of the present utility model, and such amendment and modification all fall into by within claims limited range.
Claims (8)
1. the optical communication equipment of a single fiber bi-directional symmetrical rate, it is characterized in that, described equipment comprises multiple Ethernet exchangings unit, fpga logic system unit, serial/solution string location and optical fiber transceiving unit, described serial/solution string location comprises serializer and deserializer, described optical fiber transceiving unit connects respectively described serializer and deserializer, described fpga logic system unit connects respectively described multiple Ethernet exchangings unit, and connects described serializer and described deserializer;
Described multiple Ethernet exchangings unit communicates the multichannel external ethernet signal of reception respectively at sending direction with described fpga logic system unit, described fpga logic system unit adds passage index signal in described ethernet signal, then be transferred to described serializer, described serializer adds the described ethernet signal of passage index signal to change into a road serial signal multichannel of reception, and being transferred to described optical fiber transceiving unit, described optical fiber transceiving unit transfers out described serial signal;
Described optical fiber transceiving unit is transferred to received Yi road serial signal in described deserializer at receive direction, described serial signal is changed into multi-path parallel signal by described deserializer, and described multi-path parallel signal is transferred to described fpga logic system unit, described fpga logic system unit is according to the passage index signal in described multi-path parallel signal, respectively described multi-path parallel signal is transferred to accordingly to described multichannel Ethernet exchanging unit, and outer outside by the transmission of described multichannel Ethernet unit.
2. the optical communication equipment of single fiber bi-directional symmetrical rate according to claim 1, is characterized in that, the figure place of described serial/solution string location is 10.
3. the optical communication equipment of single fiber bi-directional symmetrical rate according to claim 1, is characterized in that, PHY chip is arranged in described Ethernet exchanging unit, and described Ethernet exchanging unit communicates by MII interface and external ethernet signal.
4. the optical communication equipment of single fiber bi-directional symmetrical rate according to claim 1, is characterized in that, described fpga logic system unit comprises the ethernet controller with integrated MAC, to communicate with described Ethernet exchanging unit.
5. the optical communication equipment of single fiber bi-directional symmetrical rate according to claim 1, is characterized in that, the communication interface of described Ethernet exchanging unit adopts RJ45 interface.
6. the optical communication equipment of single fiber bi-directional symmetrical rate as claimed in claim 1, is characterized in that, in opposition to each other between each transmission channel of described multiple Ethernet exchangings unit, non-cross and corresponding one by one.
7. the optical communication equipment of single fiber bi-directional symmetrical rate as claimed in claim 1, is characterized in that, the reference clock of the described deserializer on receive direction is provided by the work clock of the signal receiving from the described optical fiber receiving element of correspondence.
8. the optical communication system of a single fiber bi-directional symmetrical rate, it is characterized in that, described system comprises transmission optical transmitter and receiver and receives optical transmitter and receiver, wherein, described transmission optical transmitter and receiver and described reception optical transmitter and receiver all use the optical communication equipment of arbitrary described single fiber bi-directional symmetrical rate of the claims 1-7, and described transmission optical transmitter and receiver is connected by two-way single fiber with described reception optical transmitter and receiver.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420103812.4U CN203761399U (en) | 2014-03-07 | 2014-03-07 | Optical communication equipment of single-fiber bi-directional symmetrical rate and system |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201420103812.4U CN203761399U (en) | 2014-03-07 | 2014-03-07 | Optical communication equipment of single-fiber bi-directional symmetrical rate and system |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106921436A (en) * | 2015-12-26 | 2017-07-04 | 华为技术有限公司 | For the method and device that the data to various speed are processed |
| CN109639358A (en) * | 2018-12-28 | 2019-04-16 | 杭州飞畅科技有限公司 | Node optical transmitter and receiver and extensive telephone transmission system and method based on the optical transmitter and receiver |
-
2014
- 2014-03-07 CN CN201420103812.4U patent/CN203761399U/en not_active Expired - Lifetime
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106921436A (en) * | 2015-12-26 | 2017-07-04 | 华为技术有限公司 | For the method and device that the data to various speed are processed |
| US10382237B2 (en) | 2015-12-26 | 2019-08-13 | Huawei Technologies Co., Ltd. | Method and apparatus for processing data of multiple rates |
| CN106921436B (en) * | 2015-12-26 | 2019-11-05 | 华为技术有限公司 | The method and device handled for the data to a variety of rates |
| CN109639358A (en) * | 2018-12-28 | 2019-04-16 | 杭州飞畅科技有限公司 | Node optical transmitter and receiver and extensive telephone transmission system and method based on the optical transmitter and receiver |
| CN109639358B (en) * | 2018-12-28 | 2023-09-01 | 杭州飞畅科技有限公司 | Node optical transceiver and large-scale telephone transmission system and method based on same |
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