CN205407829U - Optical module - Google Patents
Optical module Download PDFInfo
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- CN205407829U CN205407829U CN201620163700.7U CN201620163700U CN205407829U CN 205407829 U CN205407829 U CN 205407829U CN 201620163700 U CN201620163700 U CN 201620163700U CN 205407829 U CN205407829 U CN 205407829U
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Abstract
The utility model discloses an optical module, include: interface unit, light receiving unit, light emission unit, EDFA unit, the control unit and power supply unit, wherein, the EDFA unit links to each other with light receiving unit, closes including signal optical isolator, pump laser, wavelength and restraints the ware, mixes bait optic fibre, pumping optical isolator, the smooth wave filter that gains, and each the components and parts disconnect -type in the EDFA unit is fixed in inside the optical module. The utility model discloses inside each components and parts disconnect -type in the well EDFA unit was fixed in optical module, it was low to enlarge the noise, can realize more than the 40km long distance light signal transmission more than the 80km even.
Description
Technical field
This utility model belongs to technical field of photo communication, is specifically related to a kind of optical module for distance (more than 40km) high-speed transfer.
Background technology
Growing along with communications field transmission capacity, traditional transmission technology is difficult to meet the requirement of transmission capacity and transmission speed, in order to prevent the broadband resource of core network from occurring, planning a new generation express network agreement has been disposed by wretched insufficiency problem, operator and service supplier.In order to tackle witched-capacity network bandwidth demand, the WDM technology of two-forty becomes solution, and institute of electrical and electronic engineers (IEEE) has formulated the unified specification IEEE802.3ba of 40G and the 100G for Metropolitan Area Network (MAN) and Access Network.
According to IEEE802.3ba Fast Ethernet standard, 100GBASE-ER4 selects 1310CWDM wave length scheme, for 40km and above distance single mode transport, but 25Gb/s speed rates 40km difficulty is very big, and the C-band wave band demand of distance Metropolitan Area Network (MAN) cannot be applied to, therefore start to propose the 100G distance solution of the 10*10G for C-band.10*10GMSA agreement proposes for 40km transmission application and enters back into CFP optical module at end of link EDFA to receiving after light is amplified, the program requires that system manufacturer is on current board, increase additional space and place EDFA module and it needs to increase extra control circuit to drive EDFA to work.
In prior art application number be 201210165393.2 patent application in disclose a kind of 40GCFP optical module for long range propagation, it increases semi-conductor optical amplifier (SOA) for reception light is carried out optical amplifier at receiving terminal, improve receiving sensitivity, and then realize the transmission of longer distance, but this technical scheme has the disadvantages that
SOA gain amplifier is high to bias point sensitivity, and it is big that circuit controls difficulty；
The amplification noise of SOA is bigger, it is difficult to be applied to the transmission of more than 40km distance；
Between SOA technique and reception PIN, integrated difficulty is big, cost intensive.
Utility model content
In view of this, the purpose of this utility model is in that to provide a kind of optical module, to realize the optical signal distance high rate data transmission of more than 40km even 80km.
To achieve these goals, the technical scheme that this utility model embodiment provides is as follows:
A kind of optical module, described optical module includes:
Interface unit, is used for sending or receiving the signal of telecommunication；
Light receiving unit, is connected with described interface unit, exports to interface unit for the optical signal received converts to the signal of telecommunication；
Optical Transmit Unit, is connected with described interface unit, for the signal of telecommunication that interface unit sends converts to optical signal output；
EDFA unit, is connected with described light receiving unit, and including flashlight isolator, pump laser, wavelength coupling device, erbium-doped fiber, pump light isolator, GFF, each components and parts separate type in described EDFA unit is fixed on inside optical module；
Control unit, is connected with described Optical Transmit Unit, light receiving unit, interface unit, EDFA unit, is used for passing through internal communications interface, it is achieved the control to optical module；
Power supply unit, provides power supply with described interface unit, Optical Transmit Unit, light receiving unit, EDFA unit, control unit, and controls the open and close of unit.
As further improvement of the utility model, described EDFA unit also includes beam splitter and for monitoring the photodetector of beam splitter output part luminous power.
As further improvement of the utility model, each components and parts in described EDFA unit are screwed, viscose glue is bonding or the mode that is welded and fixed is fixed in optical module.
As further improvement of the utility model, described control unit is included circuit board and the control chip being integrated on circuit board, described pump laser and/or photodetector and is fixed on circuit board by the mode being welded and fixed.
As further improvement of the utility model, described EDFA unit is connected with standard LC or SC wire jumper with control unit, is connected by the mode of fused fiber splice between EDFA unit and light receiving unit.
As further improvement of the utility model, the mode of fused fiber splice between each components and parts in described EDFA unit, is adopted to fix at optical module inner disc fibre.
As further improvement of the utility model, in described EDFA unit, the minimum of optical fiber is not less than, around fine radius, the minimum bend loss radius that optical fiber can bear.
As further improvement of the utility model, described reception unit includes solving wavelength division multiplexer, photodetector, restriction amplifier LA, clock data recovery circuit CDR.
As further improvement of the utility model, described Optical Transmit Unit includes laser instrument, laser drive unit, clock data recovery circuit CDR and wavelength division multiplexer.
As further improvement of the utility model, described optical module is 100GCFP or CFP2 optical module.
Compared with prior art, in the technical solution of the utility model,
Optical module has been internally integrated EDFA unit, it is possible to increase optical module receives the sensitivity of optical signal；
Each components and parts separate type in EDFA unit is fixed on inside optical module, amplifies noise low, it is possible to realize the distance optical signal transmission of more than 40km even more than 80km；
EDFA technical maturity, low cost of manufacture.
Accompanying drawing explanation
Fig. 1 is the module diagram of optical module in prior art；
Fig. 2 is the module diagram of optical module in this utility model one detailed description of the invention；
Fig. 3 is the unit structure function figure of optical module in prior art；
Fig. 4 is the unit structure function figure of optical module in this utility model one detailed description of the invention；
Fig. 5 is the module diagram of EDFA unit in this utility model one detailed description of the invention.
Detailed description of the invention
Below with reference to detailed description of the invention shown in the drawings, this utility model is described in detail.But these embodiments are not limiting as this utility model, those of ordinary skill in the art is all contained in protection domain of the present utility model according to the made structure of these embodiments, method or conversion functionally.
In each diagram of the present utility model, for the ease of diagram, some size of structure or part relative to other structure or partial enlargement, therefore, can only be used for illustrating the basic structure of theme of the present utility model.
When element or unit are referred to as with another parts or unit " connection ", it can be directly connected to this another parts or unit, or can there is intermediary element or unit.On the contrary, when parts are referred to as " being connected directly between on another parts or unit ", it is impossible to there is intermediate member or unit.
Shown in ginseng Fig. 2, introducing the optical module in this utility model one specific embodiment, this optical module is 100GCFP optical module, can be used for distance (more than 40km) high-speed transfer.It includes interface unit 10, light receiving unit 20, Optical Transmit Unit 30, control unit 40, power supply unit 50 and EDFA unit 60.
Wherein, power supply unit 50 provides power supply with interface unit 10, light receiving unit 20, Optical Transmit Unit 30, control unit 40 and EDFA unit 60, and controls the open and close of unit.
Control unit 40 is connected with Optical Transmit Unit 30, light receiving unit 20, interface unit 10, EDFA unit 60 respectively, it is achieved communicates with host computer and parameters carries out Based Intelligent Control and carries out supervision and reporting.
Optical Transmit Unit 30 is connected with interface unit 10, and it mainly adopts directly modulation laser instrument (DML) that the signal of telecommunication of interface unit 10 converts to optical signal output.
Light receiving unit 20 is connected with interface unit 10, and it is mainly used in the optical signal received utilizes detector convert signal of telecommunication output to.
The module diagram that Fig. 1 show in prior art optical module, compared with prior art, by arranging EDFA unit 60 in light receiving unit side in the present embodiment, the advantage such as EDFA technical maturity, amplification low, the low cost of noise is utilized to realize the optical delivery of the longer distance of more than 40km.
In conjunction with Fig. 5 structural representation showing in the present embodiment EDFA unit, EDFA unit 60 includes: flashlight isolator 61, pump laser 62, wavelength coupling device 63, erbium-doped fiber 64, pump light isolator 65, GFF 66.
In present embodiment, each components and parts separate type in EDFA unit 60 is fixed on inside optical module, and fixed form can be screwed, viscose glue is bonding or is welded and fixed.
Preferably, the optical module in present embodiment includes shell, and control unit 40 includes circuit board and the control chip being integrated on circuit board, and the pump laser 62 in EDFA unit 60 is fixed on the circuit board in control unit 40 by the mode being welded and fixed.
It addition, EDFA unit 60 is connected with standard LC or SC wire jumper with control unit (i.e. optical module receiving terminal), it is attached by the mode of fused fiber splice between EDFA unit 60 and light receiving unit 20.It is attached also by optical fiber between each components and parts in EDFA unit 60, in EDFA unit 60, the mode adopting fused fiber splice is fixed at optical module inner disc fibre, the minimum of optical fiber is not less than, around fine radius, the minimum bend loss radius that optical fiber can bear, typically, optical fiber adopts single-mode fiber, and all of single-mode fiber all adopts low curved damage optical fiber.
Further, the optical module in present embodiment also include the beam splitter 67 between flashlight isolator 61 and wavelength coupling device 63 and for receive beam splitter 67 transmission optical signal with monitor beam splitter export part luminous power photodetector 68.If beam splitter 67 can be 5% beam splitter or 10% beam splitter etc., present embodiment illustrates for 5% beam splitter.The mounting means of photodetector 68 is identical with the mounting means of pump laser 62, is fixed on the circuit board in control unit 40 again by the mode being welded and fixed.
It should be appreciated that the beam splitter 67 in present embodiment to illustrate between flashlight isolator 61 and wavelength coupling device 63, in other embodiments, before beam splitter 67 can also be arranged at flashlight isolator 61.
The unit structure function figure that ginseng Fig. 3 show in prior art optical module, wherein:
Optical Transmit Unit (TOSA) 30, is mainly made up of laser instrument, laser drive unit and clock data recovery circuit (CDR) and wavelength division multiplexer.Four pairs of differential electric signal of input CFP optical module are carried out shaping, again timing function through CDR, received by LD drive circuit, to drive LD to send the laser of the four road different wave lengths with data modulated signal, then pass through wavelength division multiplexer and four road optical signals are synthesized a road output；
Light receiving unit (ROSA) 20, is mainly made up of photodetector, restriction amplifier (LA) and clock data recovery circuit CDR and solution wavelength division multiplexer.One road optical signal is divided into the optical signal of four road different wave lengths by the optical interface utilizing light receiving unit by solving Wave decomposing multiplexer, four road optical signals first pass through output after restriction amplifier (LA) is amplified, then the opto-electronic conversion output signal of telecommunication is carried out then through PIN, thus completing opto-electronic conversion；
Control unit 40 then passes through internal communications interface, to realize the automated power of laser instrument is controlled, extinction ratio compensation, the soft switching of Optical Transmit Unit 30 and light receiving unit 20 the Based Intelligent Control of Bandwidth adjustment etc., the monitor in real time of the relevant operating conditions detection limit that with host computer communication, can complete whole optical module by external communication interface reports.
Ginseng Fig. 4 show in this utility model one detailed description of the invention the unit structure function figure of optical module, prior art the difference is that, add EDFA unit in present embodiment in the rear end of light receiving unit 20, EDFA unit ginseng described above, this EDFA unit is also connected with control unit simultaneously.
In conjunction with Fig. 2, Fig. 4 and Fig. 5, the operation principle of the optical module in present embodiment is specific as follows:
Flashlight first passes around flashlight isolator 61, enters optical fiber to avoid EDFA unit reversely to amplify light, divides a part of light to photodetector 68 then through 67 beam splitters, and photodetector 68 is for monitoring the luminous power of the incoming signal light of beam splitter output；
Pump laser 62 and other flashlights from beam splitter 67 transmission are coupled to Er-doped fiber 64 by wavelength coupling device 63 and flashlight are carried out optical amplifier, flashlight after amplification isolates remnant pump light by pump light isolator 65, has identical gain coefficient finally by GFF 66 with the flashlight realizing different wave length；
Finally, flashlight after amplification enters and solves Wave decomposing multiplexer and carry out wavelength separated and deliver to PIN+TIA and carry out opto-electronic conversion.
Should be understood that; above-mentioned embodiment is only a preferred implementation of the present utility model; EDFA unit in this utility model is not limited to include the erbium-doped fiber amplifier of above-mentioned components and parts; can also increase or reduce components and parts in other embodiments, every the technical scheme that components and parts separate type in erbium-doped fiber amplifier is arranged in optical module be belonged to the scope that this utility model is protected.
It addition, the optical module in this utility model is not limited to 100GCFP optical module, it is also possible to be the 100GCFP2 optical module etc. including above-mentioned EDFA unit, citing illustrates no longer one by one herein.
This utility model passes through above-mentioned embodiment, has the advantages that
Optical module has been internally integrated EDFA unit, it is possible to increase optical module receives the sensitivity of optical signal；
Each components and parts separate type in EDFA unit is fixed on inside optical module, amplifies noise low, it is possible to realize the distance optical signal transmission of more than 40km even more than 80km；
EDFA technical maturity, low cost of manufacture.
It is to be understood that, although this specification is been described by according to embodiment, but not each embodiment only comprises an independent technical scheme, this narrating mode of description is only for clarity sake, description should be made as a whole by those skilled in the art, technical scheme in each embodiment through appropriately combined, can also form other embodiments that it will be appreciated by those skilled in the art that.
The a series of detailed description of those listed above is only for illustrating of feasibility embodiment of the present utility model; they are also not used to limit protection domain of the present utility model, all should be included within protection domain of the present utility model without departing from this utility model skill equivalent implementations of making of spirit or change.
Claims (10)
1. an optical module, it is characterised in that described optical module includes:
Interface unit, is used for sending or receiving the signal of telecommunication；
Light receiving unit, is connected with described interface unit, exports to interface unit for the optical signal received converts to the signal of telecommunication；
Optical Transmit Unit, is connected with described interface unit, for the signal of telecommunication that interface unit sends converts to optical signal output；
EDFA unit, is connected with described light receiving unit, and including flashlight isolator, pump laser, wavelength coupling device, erbium-doped fiber, pump light isolator, GFF, each components and parts separate type in described EDFA unit is fixed on inside optical module；
Control unit, is connected with described Optical Transmit Unit, light receiving unit, interface unit, EDFA unit, is used for passing through internal communications interface, it is achieved the control to optical module；
Power supply unit, provides power supply with described interface unit, Optical Transmit Unit, light receiving unit, EDFA unit, control unit, and controls the open and close of unit.
2. optical module according to claim 1, it is characterised in that described EDFA unit also includes beam splitter and for monitoring the photodetector of beam splitter output part luminous power.
3. optical module according to claim 2, it is characterised in that each components and parts in described EDFA unit are screwed, viscose glue is bonding or the mode that is welded and fixed is fixed in optical module.
4. optical module according to claim 3, it is characterised in that described control unit is included circuit board and the control chip being integrated on circuit board, described pump laser and/or photodetector and is fixed on circuit board by the mode being welded and fixed.
5. optical module according to claim 1, it is characterised in that described EDFA unit is connected with standard LC or SC wire jumper with control unit, is connected by the mode of fused fiber splice between EDFA unit and light receiving unit.
6. optical module according to claim 1, it is characterised in that adopt the mode of fused fiber splice to fix at optical module inner disc fibre between each components and parts in described EDFA unit.
7. optical module according to claim 6, it is characterised in that in described EDFA unit, the minimum of optical fiber is not less than, around fine radius, the minimum bend loss radius that optical fiber can bear.
8. optical module according to claim 1, it is characterised in that described reception unit includes solving wavelength division multiplexer, photodetector, restriction amplifier LA, clock data recovery circuit CDR.
9. optical module according to claim 1, it is characterised in that described Optical Transmit Unit includes laser instrument, laser drive unit, clock data recovery circuit CDR and wavelength division multiplexer.
10. optical module according to claim 1, it is characterised in that described optical module is 100GCFP or CFP2 optical module.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620163700.7U CN205407829U (en) | 2016-03-03 | 2016-03-03 | Optical module |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201620163700.7U CN205407829U (en) | 2016-03-03 | 2016-03-03 | Optical module |
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| CN205407829U true CN205407829U (en) | 2016-07-27 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105577285A (en) * | 2016-03-03 | 2016-05-11 | 苏州易锐光电科技有限公司 | Optical module |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105577285A (en) * | 2016-03-03 | 2016-05-11 | 苏州易锐光电科技有限公司 | Optical module |
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