CN201541266U - Transmitting and receiving device for optical communication - Google Patents
Transmitting and receiving device for optical communication Download PDFInfo
- Publication number
- CN201541266U CN201541266U CN2009202052467U CN200920205246U CN201541266U CN 201541266 U CN201541266 U CN 201541266U CN 2009202052467 U CN2009202052467 U CN 2009202052467U CN 200920205246 U CN200920205246 U CN 200920205246U CN 201541266 U CN201541266 U CN 201541266U
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- optical signal
- optical communication
- laser diode
- receiving
- module
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Abstract
The utility model relates to a transmitting and receiving device for optical communication, comprising two laser diode drive units, two optical communication signal receiving units, two optical communication signal transmitting units and two limiting amplifying units, wherein the optical communication signal receiving units transfer received optical signals to the limiting amplifying units, and after receiving drive signals from the laser diode drive units, the optical communication signal transmitting units transmit optical communication signals. In the utility model, the two laser diode drive units and the two optical communication signal transmitting units form two optical communication signal transmitting modules, and the two optical communication signal receiving units and the two limiting amplifying units form two optical communication signal receiving modules. The transmitting and receiving device for optical communication not only saves cost, but also modularizes optical communication signal transmitting and receiving assemblies.
Description
Technical field
The utility model relates to the optical communication sending and receiving apparatus, relates in particular to a kind of optical communication sending and receiving apparatus that receives simultaneously and launch two ways of optical signals that has.
Background technology
The communicate optical signal sending and receiving apparatus is an assembly important in the optical communication, and the development of optical communication technique is inseparable with the development of communicate optical signal sending and receiving apparatus.In the prior art, in communicate optical signal emission receiving course, the communicate optical signal sending and receiving apparatus that adopts the single-shot list to receive usually.When transmitting and receiving a communicate optical signal at the same time, this communicate optical signal sending and receiving apparatus enough uses; But, two different communicate optical signals need simultaneously to a direction transmission when having, just there are two different communicate optical signals to need sometimes simultaneously to a direction emission, at this moment need to adopt the communicate optical signal emitter of two single-shots, when needing to receive two different communicate optical signals simultaneously, at this moment need to adopt two single communicate optical signal receiving systems of receiving, this has not only increased the space of components and parts and components and parts placement, be unfavorable for modularized design, but also increased cost.
The utility model content
The utility model makes up a kind of optical communication sending and receiving apparatus, overcome the communicate optical signal sending and receiving apparatus that available technology adopting single-shot list receives and launch at the same time when receiving two communicate optical signals, need the communicate optical signal sending and receiving apparatus that two single-shot lists receive and modular construction complexity, the space that causes reaches the high technical problem of cost greatly.
The technical solution of the utility model is: make up a kind of optical communication sending and receiving apparatus, comprise the laser diode driver element, the communicate optical signal receiving element, the communicate optical signal transmitter unit, the amplitude limit amplifying unit, described communicate optical signal receiving element is sent to described amplitude limit amplifying unit with the light signal that receives, described communicate optical signal transmitter unit is launched photo-communication number after receiving the drive signal of described laser diode driver element, in the utility model, described laser diode driver element, the communicate optical signal receiving element, the communicate optical signal transmitter unit, the amplitude limit amplifying unit is two, described two laser diode driver elements and described two communicate optical signal transmitter units are formed two communicate optical signal transmitter modules, and described two communicate optical signal receiving elements and described two amplitude limit amplifying units are formed two communicate optical signal receiver modules.
Further technical scheme of the present utility model is: described communicate optical signal transmitter unit is a light emission secondary module.
Further technical scheme of the present utility model is: described communicate optical signal receiving element is the light-receiving secondary module.
Further technical scheme of the present utility model is: described communicate optical signal receiving element also comprises pre-amplifying module, and described pre-amplifying module will carry out preposition amplification from the light signal that described amplitude limit amplifying unit receives.
Further technical scheme of the present utility model is: described pre-amplifying module also comprises the automatic gain control module, and described automatic gain control module is regulated control to the amplification of light signal.
Further technical scheme of the present utility model is: described communicate optical signal receiving element also comprises unglazed alert module, and described unglazed alert module does not give a warning when described light-receiving secondary module receives light signal.
Further technical scheme of the present utility model is: described laser diode driver element also comprises the auto light power control module, and described auto light power control module is used for determining to add to according to the luminous size of laser diode the size of laser diode drive current.
Further technical scheme of the present utility model is: described laser diode driver element also comprises temperature compensation module, and described temperature compensation module is that the compensate for laser modulation efficiency is with variation of temperature.
Further technical scheme of the present utility model is: also comprise the holding wire that connects each device, described holding wire wraps up with copper sheet.
Technique effect of the present utility model is: by two communicate optical signal transmitter units and two communicate optical signal receiving elements are arranged in the module, when needs transmit and receive two communicate optical signals simultaneously, can transmit and receive two communicate optical signals simultaneously, both save cost, also just the communicate optical signal transceiver module had been carried out modularization.
Description of drawings
Fig. 1 is a structure connection diagram of the present utility model.
Fig. 2 is an opto-electronic conversion structure connection diagram of the present utility model.
Fig. 3 is an electric light transformational structure connection diagram of the present utility model.
Embodiment
Below in conjunction with specific embodiment technical solutions of the utility model are further specified:
As shown in Figure 1, embodiment of the present utility model is: the utility model makes up a kind of optical communication sending and receiving apparatus, comprise laser diode driver element 1, communicate optical signal receiving element 4, communicate optical signal transmitter unit 2, amplitude limit amplifying unit 3, described communicate optical signal receiving element 4 is sent to described amplitude limit amplifying unit 3 with the light signal that receives, launch photo-communication number after the drive signal of the described laser diode driver element 1 of described communicate optical signal transmitter unit 2 receptions, in the utility model, described laser diode driver element 1, communicate optical signal receiving element 4, communicate optical signal transmitter unit 2, amplitude limit amplifying unit 3 is two, described two laser diode driver elements 1 are formed two communicate optical signal transmitter modules with described two communicate optical signal transmitter units 2, and described two communicate optical signal receiving elements 4 are formed two communicate optical signal receiver modules with described two amplitude limit amplifying units 3.Among the embodiment of the present utility model, two communicate optical signal transmitter modules and two communicate optical signal receiver modules are integrated, form two communicate optical signal transmitting and receiving modules of sending out two receipts.When using the communicate optical signal transmitter module, differential electric signal Txdata1+ and Txdata1-for A communicate optical signal transmitter unit 2 provides bias current and modulated current, make A communicate optical signal transmitter unit 2 produce A road photo-communication number signal through laser diode driver element 1; In like manner, differential electric signal Txdata2+ and Txdata2-provide bias current and modulated current through laser diode driver element 1 for B communicate optical signal transmitter unit 2, make B communicate optical signal transmitter unit 2 produce B road photo-communication number signal, like this, at one time, can launch A road communicate optical signal and B road communicate optical signal, the two paths of signals circuit works alone, and does not disturb mutually.When using the communicate optical signal receiver module, A road communicate optical signal converts photoelectric current to voltage signal by A communicate optical signal receiving element 4, exchanges output at voltage signal through the data-signal that A amplitude limit amplifying unit 3 produces difference Rxdata1+ and Rxdata1-; In like manner, B road communicate optical signal converts photoelectric current to voltage signal by B communicate optical signal receiving element 4, exchanges output at voltage signal through the data-signal that B amplitude limit amplifying unit 3 produces difference Rxdata2+ and Rxdata2-.Among the embodiment of the present utility model, described communicate optical signal transmitter unit is light emission secondary module (Transmitter Optical SubAssembly, light emission secondary module, be called for short " TOSA "), described communicate optical signal receiving element is light-receiving secondary module (Receiver OpticalSubassembly, the light-receiving secondary module is called for short " ROSA ").In the utility model, two communicate optical signal transmitter units and two communicate optical signal receiving elements are arranged in the module, when needs transmit and receive two communicate optical signals simultaneously, can transmit and receive two communicate optical signals simultaneously, both save cost, also just the communicate optical signal transceiver module had been carried out modularization.
As shown in Figure 2, preferred implementation of the present utility model is: described communicate optical signal receiving element 4 also comprises pre-amplifying module 41, and described pre-amplifying module 41 will carry out preposition amplification from the light signal that described amplitude limit amplifying unit 4 receives.The concrete course of work is: after Optical Receivers received the light data-signal, the photodiode converts by inside modules was the signal of telecommunication, is input in the pre-amplifying module 41 and amplifies.Described pre-amplifying module also comprises the automatic gain control module, the signal of telecommunication by a small margin that the automatic gain control module is imported small-power after light is changed adopts the big multiplication factor that gains, and the signal significantly after the conversion of high-power light is adopted the multiplication factor of little gain, thereby make the electrical signal amplitude fluctuation of its output be significantly smaller than the fluctuating range of optical signal power.Described communicate optical signal receiving element 4 also comprises unglazed alert module 42, and described unglazed alert module 42 does not give a warning 43 when described light-receiving secondary module receives light signal.
As shown in Figure 3, preferred implementation of the present utility model is: described laser diode driver element 1 also comprises auto light power control module 11, and described auto light power control module 11 is used for determining to add to according to the luminous size of laser diode the size of laser diode drive current.Specifically, described auto light power control module 11 can determine to add to the drive current size of laser diode according to the size of current of the laser diode of light-receiving dorsad of monitoring laser led lighting size output.By auto light power control module 11, laser diode driver circuit can be realized dynamic adjustments laser diode drive current size.When the luminous change of laser diode was big, it is big that above-mentioned light-receiving laser diode output current becomes, and laser diode driver circuit reduces to add to the drive current of laser diode, diminishes so that laser diode is luminous; On the contrary, when laser diode is luminous when diminishing, it is luminous to increase laser diode that laser diode driver circuit will increase drive current, thereby guarantee that the laser diode luminous power keeps constant.
As shown in Figure 3, preferred implementation of the present utility model is: described laser diode driver element also comprises temperature compensation module 12, described temperature compensation module be the compensate for laser modulation efficiency with variation of temperature, the effect of described temperature compensation module 12 is to keep extinction ratio stable.The luminous efficiency of laser varies with temperature bigger, and the modulation efficiency η of laser diminishes when temperature raises, and at this moment in order to keep extinction ratio constant, needs bigger modulated current.Therefore, with the compensate for laser modulation efficiency with variation of temperature, total make the modulated current of laser rise and linear the increase along with temperature, stable to keep ER's.In the utility model, also comprise the holding wire that connects each device, described holding wire wraps up with copper sheet, prevents signal cross-talk.
Above content be in conjunction with concrete preferred implementation to further describing that the utility model is done, can not assert that concrete enforcement of the present utility model is confined to these explanations.For the utility model person of an ordinary skill in the technical field, under the prerequisite that does not break away from the utility model design, can also make some simple deduction or replace, all should be considered as belonging to protection range of the present utility model.
Claims (9)
1. optical communication sending and receiving apparatus, comprise the laser diode driver element, the communicate optical signal receiving element, the communicate optical signal transmitter unit, the amplitude limit amplifying unit, described communicate optical signal receiving element is sent to described amplitude limit amplifying unit with the light signal that receives, described communicate optical signal transmitter unit is launched after receiving the light signal of described laser diode driver element, it is characterized in that, described laser diode driver element, the communicate optical signal receiving element, the communicate optical signal transmitter unit, the amplitude limit amplifying unit is two, described two laser diode driver elements and described two communicate optical signal transmitter units are formed two light signal transmitter modules, and described two communicate optical signal receiving elements and described two amplitude limit amplifying units are formed two optical signal receiving modules.
2. optical communication sending and receiving apparatus according to claim 1 is characterized in that, described communicate optical signal transmitter unit is a light emission secondary module.
3. optical communication sending and receiving apparatus according to claim 1 is characterized in that, described communicate optical signal receiving element is the light-receiving secondary module.
4. optical communication sending and receiving apparatus according to claim 1 is characterized in that, described communicate optical signal receiving element also comprises pre-amplifying module, and described pre-amplifying module will carry out preposition amplification from the light signal that described amplitude limit amplifying unit receives.
5. optical communication sending and receiving apparatus according to claim 4 is characterized in that described pre-amplifying module also comprises the automatic gain control module, and described automatic gain control module is regulated control to the amplification of light signal.
6. optical communication sending and receiving apparatus according to claim 3 is characterized in that, described communicate optical signal receiving element also comprises unglazed alert module, and described unglazed alert module does not give a warning when described light-receiving secondary module receives light signal.
7. optical communication sending and receiving apparatus according to claim 1, it is characterized in that, described laser diode driver element also comprises the auto light power control module, and described auto light power control module is used for determining to add to according to the luminous size of laser diode the size of laser diode drive current.
8. optical communication sending and receiving apparatus according to claim 1 is characterized in that, described laser diode driver element also comprises temperature compensation module, and described temperature compensation module is used for the compensate for laser modulation efficiency with variation of temperature.
9. optical communication sending and receiving apparatus according to claim 1 is characterized in that, also comprises the holding wire that connects each device, and described holding wire wraps up with copper sheet.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009202052467U CN201541266U (en) | 2009-09-29 | 2009-09-29 | Transmitting and receiving device for optical communication |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009202052467U CN201541266U (en) | 2009-09-29 | 2009-09-29 | Transmitting and receiving device for optical communication |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201541266U true CN201541266U (en) | 2010-08-04 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009202052467U Expired - Fee Related CN201541266U (en) | 2009-09-29 | 2009-09-29 | Transmitting and receiving device for optical communication |
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|---|---|
| CN (1) | CN201541266U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104270203A (en) * | 2014-10-24 | 2015-01-07 | 成都新易盛通信技术股份有限公司 | SFF double-light-emitting module with DDM function and optical communication system |
| CN106849890A (en) * | 2016-12-26 | 2017-06-13 | 北京航天易联科技发展有限公司 | A kind of optical fiber security signal collection conditioning amplifying circuit |
-
2009
- 2009-09-29 CN CN2009202052467U patent/CN201541266U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104270203A (en) * | 2014-10-24 | 2015-01-07 | 成都新易盛通信技术股份有限公司 | SFF double-light-emitting module with DDM function and optical communication system |
| CN106849890A (en) * | 2016-12-26 | 2017-06-13 | 北京航天易联科技发展有限公司 | A kind of optical fiber security signal collection conditioning amplifying circuit |
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| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20100804 Termination date: 20140929 |
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| EXPY | Termination of patent right or utility model |