CN204190773U - A kind of optical module - Google Patents
A kind of optical module Download PDFInfo
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- CN204190773U CN204190773U CN201420690601.5U CN201420690601U CN204190773U CN 204190773 U CN204190773 U CN 204190773U CN 201420690601 U CN201420690601 U CN 201420690601U CN 204190773 U CN204190773 U CN 204190773U
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Abstract
The utility model provides a kind of optical module, realizes the technique effect of the manufacture difficulty reducing parallel transmission optical module.Comprise optical transceiver, drive circuit for laser, optical detection receiving circuit and multiplexing and demultiplexing circuit; Optical transceiver is connected with the output of drive circuit for laser and the input of optical detection receiving circuit respectively; The input of drive circuit for laser is all connected with multiplexing and demultiplexing circuit with the output of optical detection receiving circuit.By multiplexing and demultiplexing have been placed on signal of telecommunication end, eliminate the multiplexing of optical wavelength and de-multiplex section, simplified the internal structure of optical transceiver, reduced the manufacture difficulty of optical transceiver; The structure of and de-multiplex section multiplexing compared to optical wavelength in optical transceiver, the design of the multiplexing of the signal of telecommunication and de-multiplexing circuitry part is wanted simple a lot, make the whole structural design realizing the optical module of parallel transmission simple, realize the technique effect of the manufacture difficulty reducing parallel transmission optical module.
Description
Technical field
The utility model relates to technical field of optical fiber communication, is specifically related to a kind of optical module.
Background technology
What optical module realized is convert electrical signals to light signal to send, and the light signal of reception is converted to the signal of telecommunication.Generally include in optical module convert electrical signals to light signal comprise laser drive circuit and laser, and light signal is converted to the signal of telecommunication comprise photo-detector and optical detection receiving circuit; Wherein, voltage signal is converted to current signal by laser driver, and current signal is converted to light signal by laser; And light signal is converted to the signal of telecommunication by photo-detector, the signal of telecommunication of conversion amplifies by optical detection receiving circuit.
Along with the development of the business such as high-quality video, high speed high power capacity Access Network and 4G, higher requirement be it is also proposed to the transmission speed of optical module and capacity.In prior art, usually adopt the optical module of high-speed parallel transmission, as shown in Figure 1, comprise optical transceiver 11,4 road drive circuit for laser 12 and 4 tunnel optical detection receiving circuit 13; Optical transceiver comprises No. 4 laser 111, No. 4 photo-detectors 112 and optical wavelength multiplexing part 113 and optical wavelength de-multiplex section 114; Wherein, 4 road laser drivers are connected with No. 4 lasers in optical transceiver, and the light that No. 4 lasers send enters wavelength multiplexing part; The light that optical wavelength de-multiplex section demultiplexing goes out enters No. 4 photo-detectors, and No. 4 photo-detectors are connected with 4 tunnel optical detection receiving circuits.The 4 road signals of telecommunication sent are converted to 4 road light signals by laser driver and laser, send after multiplexing; And the multiplexing optical signal received, after demultiplexing, be converted to 4 road light signals, after being changed by photo-detector and optical detection receiving circuit, become the 4 road signals of telecommunication.
Optical transceiver in above-mentioned optical module, the cut-away view of optical transceiver as shown in Figure 2, the 4 multiplexing road light signals received, 4 tunnels independently light signal is separated into by 4 filter plates 21 of optical wavelength de-multiplex section, every road optical signals photo-detector 22 is converted to the signal of telecommunication, is enlarged into the available signal of telecommunication through optical detection receiving circuit; In like manner (not shown), the 4 road signals of telecommunication are converted to after 4 road light signals through laser driver and laser, after optical wavelength multiplexing part is multiplexing, synthesizes and transmit together in same optical fiber.
From Fig. 1 and Fig. 2, the existing optical module realizing parallel transmission, multiplexing and the de-multiplex section of optical wavelength is integrated with in optical transceiver, realize carrying out deciliter light in small package, but for the de-multiplex section of optical wavelength, because the spacing of optical wavelength is very little, make the arrangement difficulty of filter high, finished product yield is low, and cause the whole complex structure realizing the optical module of parallel transmission, manufacture difficulty is large.
Summary of the invention
The embodiment of the present application, by providing a kind of optical module, by simplifying optical module structure, realizes the technique effect of the manufacture difficulty reducing parallel transmission optical module.
For solving the problems of the technologies described above, the embodiment of the present application is achieved by the following technical solutions:
A kind of optical module is provided, comprises optical transceiver, drive circuit for laser, optical detection receiving circuit and multiplexing and demultiplexing circuit; Described optical transceiver is connected with the output of described drive circuit for laser and the input of described optical detection receiving circuit respectively; The input of described drive circuit for laser is all connected with described multiplexing and demultiplexing circuit with the output of described optical detection receiving circuit.
Compared with prior art, the technical scheme that the embodiment of the present application provides, the technique effect had or advantage are: in the optical module that the embodiment of the present application provides, by multiplex circuit, be converted to a road light signal again send after multi-channel electric signal is multiplexing by laser driver and laser; And after receiving light signal, after light signal being converted to the multiplexing signal of telecommunication by photo-detector and optical detection receiving circuit (the multiplexing of the signal of telecommunication is completed by light transmitting terminal), by de-multiplexing circuitry, the multiplexing signal of telecommunication is decomposed into multi-channel electric signal again, also be, multiplexing and demultiplexing have been placed on signal of telecommunication end, eliminate the multiplexing of optical wavelength and de-multiplex section, simplify the internal structure of optical transceiver, reduce the manufacture difficulty of optical transceiver; The structure of and de-multiplex section multiplexing compared to optical wavelength in optical transceiver, the design of the multiplexing of the signal of telecommunication and de-multiplexing circuitry part is wanted simple a lot, make the whole structural design realizing the optical module of parallel transmission simple, realize the technique effect of the manufacture difficulty reducing parallel transmission optical module.
Accompanying drawing explanation
Fig. 1 is the optical module structure schematic diagram realizing parallel transmission of prior art;
Fig. 2 is the internal structure schematic diagram of the optical transceiver realized in prior art in parallel transmission optical module;
The structural representation of the optical module that Fig. 3 provides for the embodiment of the present application;
The concrete optical module structure schematic diagram that Fig. 4 provides for the embodiment of the present application;
Fig. 5 for the application be the cut-away view of the optical transceiver that embodiment provides.
Embodiment
The embodiment of the present application, by providing a kind of optical module, by simplifying optical module structure, realizes the technique effect of the manufacture difficulty reducing parallel transmission optical module.
In order to better understand technique scheme, below in conjunction with Figure of description and concrete execution mode, technique scheme is described in detail.
As shown in Figure 3, be the composition structure chart of the optical module that the embodiment of the present application provides, comprise optical transceiver 11, drive circuit for laser 12, optical detection receiving circuit 13 and multiplexing and demultiplexing circuit 14; Wherein, optical transceiver is connected with the output of drive circuit for laser and the input of optical detection receiving circuit respectively; The input of drive circuit for laser is all connected with multiplexing and demultiplexing circuit with the output of optical detection receiving circuit.
In practical application, multiplexing and demultiplexing circuit also connects switch, the multi-channel electric signal that desampler sends, multi-channel electric signal is multiplexed with a road signal of telecommunication by multiplexing and demultiplexing circuit, and (the multiplexing reconciliation multiplex mode of the signal of telecommunication is based on prior art, such as the simplest add drop multiplex and demultiplexing, this programme will not limit), the multiplexing Hou mono-road signal of telecommunication is converted into current signal through drive circuit for laser, current signal realizes transmission by optical fiber after being converted to a road light signal via optical transceiver, actually in this road light signal contain four road signals, received and demultiplexing by light signal receiving terminal, and for the light signal come from Optical Fiber Transmission (suppose to be carried out based on above-mentioned principle by transmitting terminal multiplexing), current signal is converted to by optical transceiver, and be converted to after the available signal of telecommunication through optical detection receiving circuit, be demultiplexing as multi-channel electric signal by multiplexing and demultiplexing circuit and be sent to switch.
In prior art, realize in the optical transceiver in the optical module of parallel transmission, be integrated with the multiplexing and de-multiplex section of optical wavelength, realize carrying out deciliter light in small package, but for the de-multiplex section of optical wavelength, because the spacing of optical wavelength is very little, make the arrangement difficulty of filter high, finished product yield is low, and cause the whole complex structure realizing the optical module of parallel transmission, manufacture difficulty is large.
Compared in prior art, after multi-channel electric signal is converted into multipath light signal, by Optical Fiber Transmission after multiplexing by the optical wavelength multiplexing part in optical transceiver, and the multiplexing light signal that will receive, multipath light signal is demultiplexing as by optical wavelength de-multiplex section in optical transceiver, in the embodiment of the present application, multiplexing and demultiplexing have been placed on signal of telecommunication end, light signal is converted to again after multiplexing by multi-channel electric signal, and after light signal is converted to the signal of telecommunication again demultiplexing obtain multi-channel electric signal, and it is simple more a lot of than the design of the multiplexing of optical wavelength and de-multiplex section to the design of the multiplexing of the signal of telecommunication and de-multiplexing circuitry part, therefore, make the whole structural design realizing the optical module of parallel transmission simple, realize the technique effect of the manufacture difficulty reducing parallel transmission optical module.
Concrete, as shown in Figure 3, the optical transceiver that the embodiment of the present application provides comprises laser 111 and photo-detector 112; The input of laser is connected with the output of drive circuit for laser, and the output of photo-detector is connected with optical detection receiving circuit.Voltage signal is converted to current signal by drive circuit for laser, and current signal is converted to light signal by laser; The light signal of reception is converted to current signal by photo-detector, and current signal is converted to voltage signal by optical detection receiving circuit.
Concrete, laser can make DFB(Distributed Feedback Laser, distributed feedback laser) laser; Photo-detector can be PIN photo-detector or APD photo-detector.
As shown in Figure 3, LC coupling 113 is also comprised in optical transceiver; One end of LC coupling connects with laser and photo-detector respectively, and the other end and fiberoptic connection realize receiving optical signals from optical fiber, and to the light signal that Optical Fiber Transmission is converted to by the signal of telecommunication.
As shown in Figure 4, be the integrated stand composition of the optical module that the embodiment of the present application provides, connected by flexible board between optical transceiver and drive circuit for laser and optical detection receiving circuit.
With a specific embodiment, detailed introduction is done to the optical module that the embodiment of the present application provides below.
As shown in Figure 4 and shown in Figure 3, optical module comprises two above-mentioned optical transceivers 11, and each optical transceiver connects road drive circuit for laser 12, tunnel optical detection receiving circuit 13 and a multiplexing and demultiplexing circuit 14.The Distributed Feedback Laser of 20 gigabit speeds and the PIN photo-detector of 20 gigabit speeds is adopted in each optical transceiver; LC coupling one end of optical transceiver arranges Optical fiber plug and connects with optical fiber transmission line; Drive circuit for laser, optical detection receiving circuit and multiplexing and demultiplexing circuit Joint Designing are on one piece of pcb board 15, optical transceiver is connected by flexible board with pcb board, particularly, optical transceiver is connected respectively by a flexible board with drive circuit for laser and optical detection receiving circuit; The connecting lead wire that one end design of pcb board is connected with switch or pin.
Above-mentioned optical module can realize the light signal parallel transmission signal of telecommunication of 4 tunnel 10 gigabit speeds being converted to two-way 20 gigabit speed.Concrete, the 4 road 10G signals of telecommunication sent by switch, every two route multiplexing and demultiplexing circuit multiplexer is the signal of telecommunication that road 20 gigabit hastens, the signal of telecommunication of every road 20 gigabit speed is after a road drive circuit for laser is converted to current signal, received by a road optical transceiver, the signal of telecommunication multiplexing for two-way is converted to two ways of optical signals by the Distributed Feedback Laser of 20 gigabit speeds in optical transceiver respectively, and this two ways of optical signals is transferred to receiving terminal by two monomode fibers.
And realizing of the reception of light and conversion is as described below: the light signal (every road light signal has carried out multiplexing and conversion by above-mentioned sending method at its transmitting terminal) of two-way 20 gigabit speed received, still return through above-mentioned two monomode fiber transmission, just it should be noted that the wavelength of optical signal of transmission is different from the wavelength of optical signal of reception; The photo-detector of this two ways of optical signals in optical transceiver is converted to the two path signal of 20 gigabit speeds, each road signal of telecommunication is converted to current signal by a road optical detection receiving circuit, Bing You mono-road multiplexing and demultiplexing circuit is demultiplexing as the signal of telecommunication of two-way 10 gigabit speed, thus realizes the reception of the 4 road signals of telecommunication.
Use the internal structure of the optical transceiver of same optical fiber transmission and receiving optical signals, as shown in Figure 5, the first filter plate 114 has been provided with between LC coupling and laser, and between LC coupling and photo-detector, be provided with the second filter plate 115, wherein, the first filter plate 114 is not identical with the filter wavelength of the second filter plate 115; Concrete, the first filter plate 114 realizes 1310nm(nanometer) light transmission of wavelength and isolate the light of 1490nm wavelength, and the second filter plate 115 realizes the light transmission of 1490nm wavelength and isolates the light of 1130nm wavelength, two filter plates be 45 degree of angles placements.The light signal of the 1490nm wavelength sent via monomode fiber is by directive second filter plate after the first filter plate isolation refraction, through the second filter plate laggard enter photo-detector, and light signal transmission first filter plate of the 1130nm wavelength that laser sends enters monomode fiber, realizes the light signal that a monomode fiber could receive and send different wave length simultaneously.
Use the optical module that the present embodiment provides, from the signal of telecommunication of 4 tunnel 10 gigabit speeds that switch transmission comes, because switch marks every road signal, so each road order can be upset, 4 road signals are through multiplexing in optical module, and the light signal becoming two-way 20 gigabit speed transmits in monomode fiber; Transmit the light signal of two-way 20 gigabit speed come from monomode fiber, the signal of telecommunication through demultiplexing into 4 tunnel 10 gigabit speeds sends to switch.Compared with the optical module of parallel transmission in prior art 4 signal, the optical module structure of the present embodiment is simple, and still adopt two optical fiber, the system board electrical interface of optical module and application system is defined and does not change, existing application system can be common to.
The optical module that the embodiment of the present application provides, has been placed on signal of telecommunication end by multiplexing and demultiplexing, has eliminated the multiplexing of optical wavelength and de-multiplex section, simplify the internal structure of optical transceiver, reduce the manufacture difficulty of optical transceiver; The structure of and de-multiplex section multiplexing compared to optical wavelength in optical transceiver, the design of the multiplexing of the signal of telecommunication and de-multiplexing circuitry part is wanted simple a lot, make the whole structural design realizing the optical module of parallel transmission simple, realize the technique effect of the manufacture difficulty reducing parallel transmission optical module.
It should be noted that; above-mentioned explanation is not to restriction of the present utility model; the utility model is also not limited in above-mentioned citing; the change that those skilled in the art make in essential scope of the present utility model, modification, interpolation or replacement, also should belong to protection range of the present utility model.
Claims (10)
1. an optical module, is characterized in that, comprises optical transceiver, drive circuit for laser, optical detection receiving circuit and multiplexing and demultiplexing circuit; Described optical transceiver is connected with the output of described drive circuit for laser and the input of described optical detection receiving circuit respectively; The input of described drive circuit for laser is all connected with described multiplexing and demultiplexing circuit with the output of described optical detection receiving circuit.
2. optical module according to claim 1, is characterized in that, described optical transceiver comprises laser and photo-detector; The input of described laser is connected with the output of described drive circuit for laser; The output of described photo-detector is connected with described optical detection receiving circuit.
3. optical module according to claim 2, is characterized in that, described optical transceiver also comprises LC coupling; One end of described LC coupling connects with described laser and described photo-detector respectively, the other end and fiberoptic connection.
4. optical module according to claim 3, is characterized in that, described optical fiber is monomode fiber.
5. optical module according to claim 1, is characterized in that, described optical transceiver is connected by flexible board with described drive circuit for laser and described optical detection receiving circuit.
6. optical module according to claim 2, is characterized in that, described laser is Distributed Feedback Laser, and described photo-detector is PIN photo-detector or APD photo-detector.
7. optical module according to claim 3, is characterized in that, between described LC coupling and described laser, be provided with the first filter plate; The second filter plate is provided with between described LC coupling and described photo-detector; Wherein said first filter plate is not identical with the filter wavelength of described second filter plate.
8. optical module according to claim 7, is characterized in that, the acute angle of described first filter plate and described second filter plate is 45 °.
9. the optical module according to any one of claim 1-8 claim, is characterized in that, the number of described optical transceiver, described drive circuit for laser, described optical detection receiving circuit and described multiplexing and demultiplexing circuit is respectively two.
10. optical module according to claim 1, is characterized in that, the light of described optical transceiver sends and light-receiving speed is 20 gigabit meter per seconds.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420690601.5U CN204190773U (en) | 2014-11-18 | 2014-11-18 | A kind of optical module |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420690601.5U CN204190773U (en) | 2014-11-18 | 2014-11-18 | A kind of optical module |
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| Publication Number | Publication Date |
|---|---|
| CN204190773U true CN204190773U (en) | 2015-03-04 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201420690601.5U Expired - Fee Related CN204190773U (en) | 2014-11-18 | 2014-11-18 | A kind of optical module |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107979420A (en) * | 2017-11-21 | 2018-05-01 | 深圳市光为光通信科技有限公司 | CXP optical modules and optical communication apparatus |
| CN111953419A (en) * | 2019-05-16 | 2020-11-17 | 青岛海信宽带多媒体技术有限公司 | Optical module |
-
2014
- 2014-11-18 CN CN201420690601.5U patent/CN204190773U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107979420A (en) * | 2017-11-21 | 2018-05-01 | 深圳市光为光通信科技有限公司 | CXP optical modules and optical communication apparatus |
| CN107979420B (en) * | 2017-11-21 | 2024-04-02 | 深圳市光为光通信科技有限公司 | CXP optical module and optical communication device |
| CN111953419A (en) * | 2019-05-16 | 2020-11-17 | 青岛海信宽带多媒体技术有限公司 | Optical module |
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Legal Events
| Date | Code | Title | Description |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20150304 Termination date: 20191118 |