CN105610509A - 160-M optical transmission device - Google Patents
160-M optical transmission device Download PDFInfo
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- CN105610509A CN105610509A CN201510966712.3A CN201510966712A CN105610509A CN 105610509 A CN105610509 A CN 105610509A CN 201510966712 A CN201510966712 A CN 201510966712A CN 105610509 A CN105610509 A CN 105610509A
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B10/00—Transmission systems employing electromagnetic waves other than radio-waves, e.g. infrared, visible or ultraviolet light, or employing corpuscular radiation, e.g. quantum communication
- H04B10/40—Transceivers
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Abstract
The invention provides a 160-M optical transmission device, which comprises an optical sending machine and an optical receiving machine. The optical sending machine comprises an electric signal receiver for receiving electric signals, a first electric signal recover for recovering the electric signals, a first signal bandwidth converter for converting the electric signals into 160-M series electric signals, and a first optical signal receiving and sending device for converting the electric signals into optical signals and then emitting the optical signals. The optical receiving machine comprises a second optical signal receiving and sending device for receiving 160-M optical signals and converting the 160-M optical signals into electric signals, a second electric signal recover for recovering the electric signals, a second signal bandwidth converter for converting the 160-M electric signals into electric signals with a preset bandwidth, and an electric signal emitter for emitting the electric signals. According to the 160-M optical transmission device provided by the invention, the electric signal recovers are additionally configured in the optical sending machine and the optical receiving machine, so that noises in the electric signals are removed, the signal to noise ratio of the signals is improved, the correctness of emitted and received data is ensured, and the bit error rate of a system is reduced.
Description
Technical field
The present invention relates to a kind of optical transmission device, particularly a kind of 160M optical transmission device, belongs to militaryEquipment technical field, relates in particular to the equipment technical field such as remote measurement, radar, electronic countermeasure.
Background technology
Digital Optical Terminal is for the base band video of multi-channel analog, audio frequency, data are carried out to high-resolution digitalChange, form high-speed figure stream, then multi-path digital stream is carried out multiplexingly, launch by optical sender,Then by the photoreceiver of the other end receive, demultiplexing, revert to each railway digital signal, thenRevert to analog video, audio frequency, data by digitaltoanalogconversion.
Compared with conventional digital optical transmitter and receiver, 160M optical transmission device is realized the only of two-way high speed signal simultaneouslyWrite a biography defeated; The integrated wavelength division multiplex device in fiber port place, to the light transmitting and receiving along separate routes, realizes informationTransmitted in both directions in simple optical fiber. Design data and recovered link, and carried out electric light when conversion intensity and adjustSystem, is used threshold current high, and the light source that slope is high, realizes High Extinction Ratio, reduces error rate of system; LightThe additional cage of electricity modular converter, prevents electromagnetic interference; This equipment can be realized the two of 422 signals simultaneouslyTo transmission.
Summary of the invention
The technology of the present invention is dealt with problems: overcome the deficiencies in the prior art, provide a kind of 160M light transmission to establishStandby, in optical transmitter and photoreceiver, increase signal of telecommunication restorer, remove the noise in the signal of telecommunication,Improve the signal to noise ratio of signal, ensured the correctness of the data of transmitting and reception, made the mistake of systemCode check reduces.
The object of the invention is achieved by following technical solution: a kind of 160M optical transmission device, bagDraw together: optical transmitter and photoreceiver;
Described optical transmitter mainly comprises:
Electric signal receiver, for receiving the signal of telecommunication;
The first signal of telecommunication restorer, for recovering the signal of telecommunication receiving;
First signal bandwidth conversion device, for being converted to the signal of telecommunication after recovering the serial electricity of 160MSignal;
The first optical signal transceiver device carries out after the serial electric signal of 160M is converted to optical signalTransmitting;
Power module, for realizing voltage transitions and believing to electric signal receiver, photovoltaic converter and lightThe power supply of number transmitter;
Described photoreceiver mainly comprises:
The second optical signal transceiver device, for receiving 160M optical signal and being converted into the signal of telecommunication;
The second signal of telecommunication restorer, for recovering the signal of telecommunication;
Secondary signal bandwidth conversion device, for the default band that the 160M signal of telecommunication after recovering is converted toThe wide signal of telecommunication;
Signal of telecommunication transmitter, for launching the signal of telecommunication;
Power module, for realizing voltage transitions also to optical signal receiver, photovoltaic converter and telecommunicationsThe power supply of number transmitter.
Described recovery adopts the CLC01 chip of Nationalsemiconductor company to realize.
Described the signal of telecommunication after recovering is converted to the serial electric signal of 160M, is specially: described theOne signal bandwidth converter comprises the first deserializer, a FPGA and the first parallel-to-serial converter;
Serial electric signal after recovering is converted to described the first deserializer and horizontal electrical signal is exported toFPGA；
A described FPGA utilizes also horizontal electrical signal to be transmitted to the first parallel-to-serial converter;
Described the first parallel-to-serial converter is converted to parallel optical signal the 160M signal of telecommunication of serial, instituteState 160=N1*M1, wherein N1 is and the number of horizontal electrical signal, the output clock that M1 is FPGAFrequency.
The signal of telecommunication of the described pre-set bandwidths that the 160M signal of telecommunication after recovering is converted to, is specially:Described secondary signal bandwidth conversion device comprises that the second deserializer, the 2nd FPGA and second also go here and there and turnParallel operation;
The 160M serial electric signal after recovering is converted to pre-set bandwidths by described the second deserializerAnd horizontal electrical signal is exported to FPGA;
The also horizontal electrical signal of pre-set bandwidths is transmitted to the second parallel-to-serial converter by described the 2nd FPGA;
Described the second parallel-to-serial converter is converted to the parallel signal of telecommunication signal of telecommunication of serial.
Described photoreceiver also comprises serial driver, for the serial to the second parallel-to-serial converter outputThe signal of telecommunication carries out after signal strengthens exporting.
Described the first optical signal transceiver device and the second optical signal transceiver device be operated in simultaneously 1310nm andTwo wave bands of 1550nm, the first optical signal transceiver device uses 1310nm band emission optical signal, simultaneouslyReceive the optical signal of 1550nm wave band; The second optical signal transceiver device receives the light letter of 1310nm wave bandNumber, use 1550nm band emission optical signal, the first optical signal transceiver device and the second optical signal simultaneouslyTransceiver, at the integrated wavelength division multiplex device in fiber port place, to the light transmitting and receiving along separate routes, is realized lightInformation is transmitted in both directions in simple optical fiber.
Described optical transmitter also comprises RS422 electric signal receiver and light source;
Described RS422 electric signal receiver is for receiving 422 signals of telecommunication of outside input;
Described light source is exported after 422 signals of telecommunication are converted to optical signal.
Described photoreceiver also comprises RS422 signal of telecommunication transmitter and photo-detector;
Described photo-detector is for being converted to the optical signal of outside input 422 signal of telecommunication outputs;
Described RS422 signal of telecommunication transmitter is for sending out 422 signals of telecommunication of photo-detector outputPenetrate.
The threshold current of described light source is more than or equal to 350mA, and slope is more than or equal to 0.4W/A.
The present invention's beneficial effect is compared with prior art as follows:
The present invention adopts signal of telecommunication recovery technology, has ensured the correctness of the data of transmitting and reception, makesThe bit error rate of the system of obtaining reduces.
Brief description of the drawings
Fig. 1 is the schematic diagram of optical transmitter the first embodiment in the present invention;
Fig. 2 is the schematic diagram of optical transmitter the second embodiment in the present invention;
Fig. 3 is the schematic diagram of photoreceiver the first embodiment in the present invention;
Fig. 4 is the schematic diagram of photoreceiver the second embodiment in the present invention.
Detailed description of the invention
In order to make technical problem solved by the invention, technical scheme and beneficial effect clearer,Below in conjunction with drawings and Examples, the present invention is further elaborated, should be appreciated that this placeThe specific embodiment of describing, only in order to explain the present invention, is not intended to limit the present invention.
160M optical transmission device in the present invention specifically comprises 160M optical transmitter and 160M light-receivingMachine.
The first embodiment of described optical transmitter as shown in Figure 1, as can be seen from Figure 1, the light in the present inventionTransmitter mainly comprises:
Electric signal receiver, for receiving the signal of telecommunication; The input of the described signal of telecommunication is by outside sourceRealize by coaxial line or twisted-pair feeder.
The first signal of telecommunication restorer, for recovering the signal of telecommunication receiving; Described recovery is mainBe in order to remove the noise in the signal of telecommunication, improve the signal to noise ratio of the signal of telecommunication, described data recoverer hasSignal out-of-lock detection function, the feature of low-power consumption is inputted and possessed to compatible single-ended and difference. In realityIn operating process, the first signal of telecommunication restorer employing Nationalsemiconductor companyCLC01 chip is realized.
First signal bandwidth conversion device, for being converted to the signal of telecommunication after recovering the serial electricity of 160MSignal; Described 160M serial electric signal, except meeting bandwidth requirement, also needs signal rate to enterRow is adjusted, and meets the requirement of signal transmission rate, therefore, and in order better to realize above function,In first signal bandwidth conversion device, should comprise FPGA, utilize clock signal to input/output signal speedRate is adjusted.
Further, in the present invention, adopt following mode to realize above-mentioned conversion process: first signal bandWide converter comprises the first deserializer, a FPGA and the first parallel-to-serial converter;
Serial electric signal after recovering is converted to described the first deserializer and horizontal electrical signal is exported toFPGA；
A described FPGA utilizes also horizontal electrical signal to be transmitted to the first parallel-to-serial converter;
Described the first parallel-to-serial converter is converted to parallel optical signal the 160M signal of telecommunication of serial, instituteState 160=N1*M1, wherein N1 is and the number of horizontal electrical signal, the output clock that M1 is FPGAFrequency.
Specific embodiment of above conversion process is as follows:
The first deserializer receives LVDS serial data stream and converts the parallel data of 10bit bit wide toAnd separated clock, and parallel data and separated clock are sent to a FPGA, a FPGA rootAccording to separated clock, the signal rate of parallel data is adjusted, and parallel data is exported to firstParallel-to-serial converter;
The first parallel-to-serial converter becomes single by the parallel LVCMOS/LVTTL data transaction of 10-bit bit wideSerial data stream at a high speed.
The first optical signal transceiver device carries out after the serial electric signal of 160M is converted to optical signalTransmitting; In order to realize above function, in the first optical signal transceiver device, integrated light source, utilizes this lightThe serial electric signal of 160M is converted to optical signal by source.
Power module, for realizing voltage transitions also to electric signal receiver, photovoltaic converter and optical signalTransmitter power supply; Described power module is mainly used in that external 220V alternating voltage is converted into light and sendsThe 12V DC voltage that machine can be used.
Be illustrated in figure 2 the schematic diagram of optical transmitter the second embodiment in the present invention, can from Fig. 2Know, the optical transmitter in the present invention also comprises RS422 electric signal receiver and light source;
Described RS422 electric signal receiver is for receiving 422 signals of telecommunication of outside input;
Described light source is exported after 422 signals of telecommunication are converted to optical signal.
Further, optical transmitter can also comprise photo-detector, outside described photo-detector can receivePortion's optical signal is also converted to 422 signals of telecommunication, and 422 signals of telecommunication are passed through to RS422 electric signal receiverOutput.
Be illustrated in figure 3 photoreceiver the first embodiment schematic diagram in the present invention, as can be seen from Figure 3,Photoreceiver in the present invention comprises:
The second optical signal transceiver device, for receiving 160M optical signal and being converted into the signal of telecommunication; For realityNow above function, integrated photo-detector in the first optical signal transceiver device, utilizes this photo-detectorThe serial optical signal of 160M is converted to the signal of telecommunication.
The second signal of telecommunication restorer, for recovering the signal of telecommunication; Described recovery is mainly in order to goExcept the noise in the signal of telecommunication, improve the signal to noise ratio of the signal of telecommunication, in actual mechanical process, the second telecommunicationsNumber restorer adopts the CLC01 chip of Nationalsemiconductor company to realize.
Secondary signal bandwidth conversion device, for the default band that the 160M signal of telecommunication after recovering is converted toThe wide signal of telecommunication; The signal of telecommunication of described secondary signal bandwidth conversion device output is wanted except meeting pre-set bandwidthsOutside asking, also need output signal speed to adjust, meet the requirement of signal transmission rate, because ofThis in order better to realize above function, should comprise in secondary signal bandwidth conversion deviceFPGA, utilizes clock signal to adjust input/output signal speed and bandwidth.
Further, in the present invention, adopt following mode to realize above-mentioned conversion process: described the second letterNumber bandwidth conversion device comprises the second deserializer, the 2nd FPGA and the second parallel-to-serial converter;
The 160M serial electric signal after recovering is converted to pre-set bandwidths by described the second deserializerAnd horizontal electrical signal is exported to FPGA;
The also horizontal electrical signal of pre-set bandwidths is transmitted to the second parallel-to-serial converter by described the 2nd FPGA;
Described the second parallel-to-serial converter is converted to the parallel signal of telecommunication signal of telecommunication of serial.
Signal of telecommunication transmitter, for launching the signal of telecommunication of serial;
Power module, for realizing voltage transitions also to optical signal receiver, photovoltaic converter and telecommunicationsThe power supply of number transmitter. Described power module is mainly used in that external 220V alternating voltage is converted into light and sends outThe 12V DC voltage that send machine to use.
Further, in order to improve the signal to noise ratio of serial electric signal, in photoreceiver, be provided with serialDriver, carries out after signal strengthens exporting to the serial electric signal of the second parallel-to-serial converter output.
Be illustrated in figure 4 the schematic diagram of photoreceiver the second embodiment in the present invention, can from Fig. 4Know, the photoreceiver in the present invention also comprises RS422 signal of telecommunication transmitter and photo-detector;
Described photo-detector is for being converted to the optical signal of outside input 422 signal of telecommunication outputs;
Described RS422 signal of telecommunication transmitter is for sending out 422 signals of telecommunication of photo-detector outputPenetrate.
Further, photoreceiver can also comprise light source, and described light source can receive outside 422 electricitySignal is also converted to optical signal.
Further, in order to prevent electromagnetic interference, facilitate the transmitted in both directions of RS422, at optical transmitterIncrease cage outward with photoreceiver, prevent electromagnetic interference.
In addition, in order to improve the multiplexing performance of optical transmitter and photoreceiver, the first optical signal transceiver deviceMay be simultaneously operated in 1310nm and two wave bands of 1550nm, first with the second optical signal transceiver deviceOptical signal transceiver device uses 1310nm band emission optical signal, receives the light of 1550nm wave band simultaneouslySignal; The second optical signal transceiver device receives the optical signal of 1310nm wave band, uses 1550nm simultaneouslyBand emission optical signal, the first optical signal transceiver device and the second optical signal transceiver device collect at fiber port placeBecome wavelength division multiplex device, to the light transmitting and receiving along separate routes, realize optical information two-way in simple optical fiberTransmission.
Further, in order to improve the security of optical transmitter and photoreceiver, connect at optical transmitter and lightIn receipts machine, be provided with earthing rod, prevent from use procedure occurring electric leakage and wait dangerous situation, guarantee the person withThe safety of equipment.
In addition, in order to realize High Extinction Ratio, reduce error rate of system, related by electricity in the present inventionThe threshold current that signal is converted into the light source of optical signal is more than or equal to 350mA, and slope is more than or equal to0.4W/A。
Compared with existing optical transmission device, the equipment in the present invention has been realized original non-existent 160MBandwidth light sends and light-receiving, and in addition, that the present invention has is flexible for installation, volume is little, lightweight, costThe advantage such as low; Realize the stable transfer of two-way 160M signal; Increase earthing rod, guaranteed the personAnd the safety of equipment; All photoelectric conversion modules are all at the integrated wavelength division multiplex device in fiber port place, rightThe light shunt transmitting and receiving, the information that realizes transmitted in both directions in simple optical fiber; Increase data and recovered ringJoint, reduces error rate of system; The additional cage of electrooptic conversion module and photoelectric conversion module, can preventElectromagnetic interference, has realized the transmitted in both directions of RS422.
Non-elaborated part of the present invention belongs to techniques well known.
More than by the detailed description of concrete and preferred embodiment the present invention, but art technologyPersonnel should be understood that the present invention is not limited to the above embodiment, all in spirit of the present invention and former, any amendment of doing, be equal to replacement etc., within protection scope of the present invention all should be included in.
Claims (9)
1. a 160M optical transmission device, is characterized in that: comprising: optical transmitter and light-receivingMachine;
Described optical transmitter mainly comprises:
Electric signal receiver, for receiving the signal of telecommunication;
The first signal of telecommunication restorer, for recovering the signal of telecommunication receiving;
First signal bandwidth conversion device, for being converted to the signal of telecommunication after recovering the serial electricity of 160MSignal;
The first optical signal transceiver device carries out after the serial electric signal of 160M is converted to optical signalTransmitting;
Power module, for realizing voltage transitions and believing to electric signal receiver, photovoltaic converter and lightThe power supply of number transmitter;
Described photoreceiver mainly comprises:
The second optical signal transceiver device, for receiving 160M optical signal and being converted into the signal of telecommunication;
The second signal of telecommunication restorer, for recovering the signal of telecommunication;
Secondary signal bandwidth conversion device, for the default band that the 160M signal of telecommunication after recovering is converted toThe wide signal of telecommunication;
Signal of telecommunication transmitter, for launching the signal of telecommunication;
Power module, for realizing voltage transitions also to optical signal receiver, photovoltaic converter and telecommunicationsThe power supply of number transmitter.
2. a kind of 160M optical transmission device according to claim 1, is characterized in that: described inRecover to adopt the CLC01 chip of Nationalsemiconductor company to realize.
3. a kind of 160M optical transmission device according to claim 1, is characterized in that: described inThe serial electric signal that the signal of telecommunication after recovering is converted to 160M, is specially: described first signal bandWide converter comprises the first deserializer, a FPGA and the first parallel-to-serial converter;
Serial electric signal after recovering is converted to described the first deserializer and horizontal electrical signal is exported to FPGA；
A described FPGA utilizes also horizontal electrical signal to be transmitted to the first parallel-to-serial converter;
Described the first parallel-to-serial converter is converted to parallel optical signal the 160M signal of telecommunication of serial, instituteState 160=N1*M1, wherein N1 is and the number of horizontal electrical signal, and the output clock that M1 is FPGA frequentlyRate.
4. a kind of 160M optical transmission device according to claim 1, is characterized in that: described inThe signal of telecommunication of the pre-set bandwidths that the 160M signal of telecommunication after recovering is converted to, is specially: described secondSignal bandwidth converter comprises the second deserializer, the 2nd FPGA and the second parallel-to-serial converter;
The 160M serial electric signal after recovering is converted to pre-set bandwidths by described the second deserializerAnd horizontal electrical signal is exported to FPGA;
The also horizontal electrical signal of pre-set bandwidths is transmitted to the second parallel-to-serial converter by described the 2nd FPGA;
Described the second parallel-to-serial converter is converted to the parallel signal of telecommunication signal of telecommunication of serial.
5. a kind of 160M optical transmission device according to claim 4, is characterized in that: described inPhotoreceiver also comprises serial driver, for the serial electric signal of the second parallel-to-serial converter output is enteredOutput after row signal strengthens.
6. a kind of 160M optical transmission device according to claim 1, is characterized in that: described inThe first optical signal transceiver device and the second optical signal transceiver device are operated in two of 1310nm and 1550nm simultaneouslyWave band, the first optical signal transceiver device uses 1310nm band emission optical signal, receives 1550nm simultaneouslyThe optical signal of wave band; The second optical signal transceiver device receives the optical signal of 1310nm wave band, uses simultaneously1550nm band emission optical signal, the first optical signal transceiver device and the second optical signal transceiver device are at optical fiberThe integrated wavelength division multiplex device in port, to the light transmitting and receiving along separate routes, realizes optical information at single lightTransmitted in both directions in fibre.
7. a kind of 160M optical transmission device according to claim 1, is characterized in that: described inOptical transmitter also comprises RS422 electric signal receiver and light source;
Described RS422 electric signal receiver is for receiving 422 signals of telecommunication of outside input;
Described light source is exported after 422 signals of telecommunication are converted to optical signal.
8. a kind of 160M optical transmission device according to claim 1, is characterized in that: described inPhotoreceiver also comprises RS422 signal of telecommunication transmitter and photo-detector;
Described photo-detector is for being converted to the optical signal of outside input 422 signal of telecommunication outputs;
Described RS422 signal of telecommunication transmitter is for sending out 422 signals of telecommunication of photo-detector outputPenetrate.
9. a kind of 160M optical transmission device according to claim 1, is characterized in that: described inThe threshold current of light source is more than or equal to 350mA, and slope is more than or equal to 0.4W/A.
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| CN113672550A (en) * | 2020-05-13 | 2021-11-19 | 华为技术有限公司 | Computing system, server and signal transmission method |
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