CN2836343Y - Single-fiber bidirectional asymmetric optical module - Google Patents
Single-fiber bidirectional asymmetric optical module Download PDFInfo
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- CN2836343Y CN2836343Y CNU2005201327159U CN200520132715U CN2836343Y CN 2836343 Y CN2836343 Y CN 2836343Y CN U2005201327159 U CNU2005201327159 U CN U2005201327159U CN 200520132715 U CN200520132715 U CN 200520132715U CN 2836343 Y CN2836343 Y CN 2836343Y
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Abstract
The utility model relates to a photoelectric conversion module for an optical fiber signal transmission process, more specifically a single-fiber bidirectional asymmetric optical module assembly. The utility model comprises a differential data input and control signal output module and a control signal input and differential data output module which are connected through an optical fiber, wherein the differential data input and control signal output module comprises one drive circuit for driving the input of differential data, a laser diode for converting a differential data signal into an optical signal, a wave division multiplex circuit, a reception detector or a reception assembly which is used for receiving the optical signal transferred by the optical fiber and a post amplification circuit for processing the received signal which are connected in succession, and the optical fiber is connected with the wave division multiplex circuit are connected. The small exterior single-fiber bidirectional asymmetric optical module assembly of the utility model is applied to digital video light transmission, the transmission of two paths of digital signals is realized in one optical fiber, the problem that two levels (PECL and TTL) simultaneously operate is solved, and the utility model realizes the simultaneous transmission of high speed in forward direction and low speed in reverse direction.
Description
Technical field
The utility model relates to a kind of photoelectric conversion module that is used for the fiber-optic signal transmission course, is the asymmetric optical module group of a kind of single fiber bi-directional specifically.
Technical background
The tradition optical module is generally symmetrical expression to the transmission of processing signals, i.e. the transmitting-receiving at two ends is all adopted with a kind of level, and transmission rate is also all identical, as all being the PECL level or all being Transistor-Transistor Logic level, with the speed transmission.And existing photoelectric conversion module needs to go out by the switching wire jumper to connect FC ring flange or ST ring flange at the SC interface, cause overall volume bigger, make that also the equipment volume of this photoelectric conversion module of employing is also corresponding bigger, if do not increase on the equipment volume in order to allow, can only be assemblied in the outside of equipment, need also that special power supply circuits, special shell are used for waterproof, sun-proof, antistatic forms to cause needs complicated, the bulky systems of a cover, also reduced reliability simultaneously.
The utility model content
The utility model has overcome above-mentioned shortcoming, and a kind of simple in structure, superior performance, the asymmetric optical module group of single fiber bi-directional that stability is strong are provided.
The technical scheme in the invention for solving the technical problem is: the asymmetric optical module group of a kind of single fiber bi-directional, comprise the differential data input and control signal output module that link to each other by optical fiber, with control signal input and differential data output module, described differential data input comprises a drive circuit that is used to drive the differential data input with the control signal output module, be used for described differential data signals is converted into the laser diode of light signal, be used to receive the pick-up probe or the receiving unit of the light signal that transmits from described optical fiber, because rearmounted amplifying circuit and the wavelength division multiplexing circuit handled to the received signal, described drive circuit, laser diode, the wavelength division multiplexing circuit, pick-up probe or receiving unit, and rearmounted discharge circuit is continuous in turn, and described optical fiber links to each other with the wavelength division multiplexing circuit.
Described control signal input can be identical with control signal output module circuit structure with described differential data input with the differential data output module, comprise the drive circuit, laser diode, wavelength division multiplexing circuit, receiving unit and the rearmounted amplifying circuit that connect in turn, described optical fiber links to each other with the wavelength division multiplexing circuit.
Also can comprise an automatic power control circuitry in the input of described differential data and the control signal output module, and link to each other with laser diode with drive circuit in the differential data output module with described differential data input respectively.
Described drive circuit and rearmounted amplifying circuit all can be provided with standard Transistor-Transistor Logic level interface.
Described wavelength division multiplexing circuit can adopt ST interface or FC interface.
The utility model comprises the differential data input and control signal output module and control signal input and differential data output module that links to each other by optical fiber, described differential data input comprises a drive circuit that is used to drive the differential data input with the control signal output module, be used for described differential data signals is converted into the laser diode of light signal, be used to receive the pick-up probe or the receiving unit of the light signal that transmits from described optical fiber, rearmounted amplifying circuit that is used for handling to the received signal and wavelength division multiplexing circuit, described drive circuit, laser diode, the wavelength division multiplexing circuit, pick-up probe or receiving unit, and rearmounted discharge circuit is continuous in turn, and described optical fiber links to each other with the wavelength division multiplexing circuit.The utility model is applied to the asymmetric optical module group of single fiber bi-directional of digital video optical transmission, in an optical fiber, realize the transmission of two ways of digital signals, solve the problem that two kinds of level (PECL and TTL) are worked simultaneously, realize transmitting when two-forty forward and low rate are reverse, speed end adopts the PECL level, low speed end PECL level, also can adopt Transistor-Transistor Logic level, the forward data transmission rate is 155Mbp/s, 622Mbp/s, 1.25Gbp/s, the reverse data transmission rate is DC-500Kbps or 2～100Mbp/s, forward, oppositely dual wavelength customizes with customer demand; In addition, described wavelength division multiplexing circuit directly adopts ST interface or FC interface, make multinomial functions such as the utility model delicate structure, integrated multinomial function, the power supply that can utilize its corollary equipment, antistatic, on stability, practicality, improve greatly, and small and exquisite profile, so in assembling and use, outstanding advantage is arranged also.
Description of drawings
Fig. 1 is the utility model circuit block diagram
Fig. 2 is that differential data is imported the circuit theory diagrams of exporting with control signal in the utility model
Fig. 3 is that control signal is imported the circuit theory diagrams of exporting with differential data in the utility model
Embodiment
As shown in fig. 1, the utility model comprises the differential data input and control signal output module and control signal input and differential data output module that links to each other by optical fiber, described differential data input comprises a drive circuit that is used to drive the differential data input with control signal output module (hereinafter to be referred as the differential data input module), be used for described differential data signals is converted into the laser diode of light signal, be used to receive the pick-up probe or the receiving unit of the light signal that transmits from described optical fiber, rearmounted amplifying circuit that is used for handling to the received signal and wavelength division multiplexing circuit, described drive circuit, laser diode, the wavelength division multiplexing circuit, pick-up probe or receiving unit, and rearmounted discharge circuit links to each other in turn, described optical fiber links to each other with the wavelength division multiplexing circuit, an automatic power control circuitry, and respectively with described differential data input module in drive circuit link to each other with laser diode.Described control signal input is identical with described differential data input module circuit structure with differential data output module (hereinafter to be referred as the control signal input module), comprise the drive circuit, laser diode, wavelength division multiplexing circuit, receiving unit and the rearmounted amplifying circuit that connect in turn, described optical fiber links to each other with the wavelength division multiplexing circuit.
Described differential data input module, as shown in Figure 2.This figure divides two paths:
(1) differential data path: the differential signal of two-way PECL level is imported through external five needle tubing pin interface MODULEA, U1 amplifies power through the emission chip for driving, afterwards via exporting behind the automatic power control circuitry, and guarantee the transmitting power that it is stable, the signal of output is required differential signal, and launch by described laser diode LD 1, described automatic power control circuitry, main is the feedback circuit that main element is set up by comparator U3 and triode Q1, the LD end of described laser diode LD 1 links to each other with the output of described emission chip for driving, the PD end connects the reverse input end of described comparator U3, the output of described comparator U3 is connected to the base stage of described triode Q1 after through a resistance R 12, the grounded emitter of described triode Q1, collector electrode feed back to the EN end of described emission chip for driving U1.
(2) control signal path: the control signal of Transistor-Transistor Logic level is by the input of interface INTIA position, by external five needle tubing pin interface MODULEA output.Its work path in this circuit is as follows: via the filter circuit filtering that Resistor-Capacitor Unit constitutes, chip for driving U2 receives and amplification through receiving again, again by described interface MODULEA output.
Described control signal input module, as shown in Figure 3.Fig. 3 and Fig. 2 are inverse process.Also divide two paths:
(1) control signal path: the control signal of Transistor-Transistor Logic level is imported by external five needle tubing pin interface MODULEA, amplifies its power via the emission drive circuit, again by laser diode LD 2 outputs.Described emission drive circuit mainly is made of six driving branch roads that are connected in parallel, and the logic inverter U4 and the resistance of every route series connection constitute.
(2) differential data path:, behind the filter circuit of setting up via the resistance capacitance element, after receiving chip for driving U3 and receiving and amplify this signal, export by interface MODULEA more again by interface PINTIA position input.
The utility model adopts wavelength-division multiplex technique, makes the transmission that realizes the two paths of data signal in the optical fiber, and the course of work is as follows:
Side circuit: by the differential data input of PECL level, make laser diode LD 1 luminous through drive circuit, laser diode LD 1 issued light ripple is coupled to optical fiber and is transferred to wavelength division multiplexing circuit WDM2 behind wave division multiplexing WDM 1 circuit, being coupled to receiving unit PT2 behind wavelength division multiplexing circuit WDM2 receives, after amplifying through rearmounted amplifying circuit PA at last, the differential data of output PECL level.
Dotted line loop: after Transistor-Transistor Logic level or the input of PECL level control data, make laser diode LD 2 luminous, described laser diode LD 2 issued light ripples are coupled to optical fiber and are transferred to wavelength division multiplexing circuit WDM1 behind wavelength division multiplexing circuit WDM2, be coupled to described pick-up probe PD1 or receiving unit PT reception through described wavelength division multiplexing circuit WDM1, the Transistor-Transistor Logic level control data output of outputting standard after described rearmounted amplifying circuit is handled.
The utility model has adopted WDM (wavelength division multiplexing) technology to make the transmission that realizes the two paths of data signal in the optical fiber.Realize that two kinds of level (PECL and TTL) work simultaneously, and transmission when realizing that two-forty forward and low rate are reverse, wherein, the low speed end can adopt the PECL level, also can adopt Transistor-Transistor Logic level, realizes the asymmetric of level; The forward data transmission rate is 155Mbp/s, 622Mbp/s, 1.25Gbp/s, and the reverse data transmission rate is DC-500Kbps or 2～100Mbp/s, realizes the asymmetric of transmission rate.Simultaneously, the utility model also can freely be selected ST or FC interface according to user's needs.
The utility model deft design, because described wavelength division multiplexing circuit directly adopts ST interface or FC interface, wire jumper and SC interface have been reduced, simultaneously, power supply directly links to each other with the electric power system of existing equipment by terminal pin, need not special power supply circuits, can directly embed in the existing equipment, in optical transceiver, can directly utilize simultaneously the feed system in the equipment, need not outside special power supply circuits, save control box and feed system, make supervisory control system smaller and more exquisite, reliable, make the utility model can be widely used in fields such as security protection, industrial monitoring.Especially build developed regions relatively early, this product can make the utilance of existing fiber resource improve greatly.
More than the asymmetric optical module group of single fiber bi-directional provided by the utility model is described in detail, used specific case herein principle of the present utility model and execution mode are set forth, the explanation of above embodiment just is used for helping to understand method of the present utility model and core concept thereof; Simultaneously, for one of ordinary skill in the art, according to thought of the present utility model, the part that all can change in specific embodiments and applications, in sum, this description should not be construed as restriction of the present utility model.
Claims (5)
1. asymmetric optical module group of single fiber bi-directional, comprise the differential data input and control signal output module and control signal input and differential data output module that link to each other by optical fiber, it is characterized in that: described differential data input comprises a drive circuit that is used to drive the differential data input with the control signal output module, be used for described differential data signals is converted into the laser diode of light signal, be used to receive the pick-up probe or the receiving unit of the light signal that transmits from described optical fiber, rearmounted amplifying circuit that is used for handling to the received signal and wavelength division multiplexing circuit, described drive circuit, laser diode, the wavelength division multiplexing circuit, pick-up probe or receiving unit, and rearmounted discharge circuit is continuous in turn, and described optical fiber links to each other with the wavelength division multiplexing circuit.
2. the asymmetric optical module group of single fiber bi-directional according to claim 1, it is characterized in that: described control signal input is identical with differential data output module circuit structure with the input of described differential data with the control signal output module, comprise the drive circuit, laser diode, wavelength division multiplexing circuit, receiving unit and the rearmounted amplifying circuit that connect in turn, described optical fiber links to each other with the wavelength division multiplexing circuit.
3. the asymmetric optical module group of single fiber bi-directional according to claim 1 and 2, it is characterized in that: also comprise an automatic power control circuitry in the input of described differential data and the control signal output module, and link to each other with laser diode with drive circuit in the control signal output module with described differential data input respectively.
4. the asymmetric optical module group of single fiber bi-directional according to claim 1 and 2 is characterized in that: described drive circuit and rearmounted amplifying circuit all are provided with standard Transistor-Transistor Logic level interface.
5. the asymmetric optical module group of single fiber bi-directional according to claim 1 and 2 is characterized in that: described wavelength division multiplexing circuit adopts ST interface or FC interface.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2005201327159U CN2836343Y (en) | 2005-11-11 | 2005-11-11 | Single-fiber bidirectional asymmetric optical module |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2005201327159U CN2836343Y (en) | 2005-11-11 | 2005-11-11 | Single-fiber bidirectional asymmetric optical module |
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| CN2836343Y true CN2836343Y (en) | 2006-11-08 |
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| Application Number | Title | Priority Date | Filing Date |
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| CNU2005201327159U Expired - Fee Related CN2836343Y (en) | 2005-11-11 | 2005-11-11 | Single-fiber bidirectional asymmetric optical module |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102338913A (en) * | 2011-10-28 | 2012-02-01 | 江苏奥雷光电有限公司 | Active optical cable utilizing photovoltaic effect to transmit electric energy |
| CN103391137A (en) * | 2013-08-22 | 2013-11-13 | 成都新易盛通信技术股份有限公司 | 1*9 low-rate optical module with DDM (data distribution management) function |
| CN112489410A (en) * | 2019-09-11 | 2021-03-12 | 李冰 | Transmitting and receiving device for photoelectric signals and operation method thereof |
| CN112769474A (en) * | 2020-12-31 | 2021-05-07 | 中山大学 | Single-fiber bidirectional optical fiber transmission system based on asymmetric modulation spectrum |
-
2005
- 2005-11-11 CN CNU2005201327159U patent/CN2836343Y/en not_active Expired - Fee Related
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102338913A (en) * | 2011-10-28 | 2012-02-01 | 江苏奥雷光电有限公司 | Active optical cable utilizing photovoltaic effect to transmit electric energy |
| CN103391137A (en) * | 2013-08-22 | 2013-11-13 | 成都新易盛通信技术股份有限公司 | 1*9 low-rate optical module with DDM (data distribution management) function |
| CN112489410A (en) * | 2019-09-11 | 2021-03-12 | 李冰 | Transmitting and receiving device for photoelectric signals and operation method thereof |
| CN112489410B (en) * | 2019-09-11 | 2022-09-02 | 李冰 | Transmitting and receiving device for photoelectric signals and operation method thereof |
| CN112769474A (en) * | 2020-12-31 | 2021-05-07 | 中山大学 | Single-fiber bidirectional optical fiber transmission system based on asymmetric modulation spectrum |
| CN112769474B (en) * | 2020-12-31 | 2022-02-11 | 中山大学 | Single-fiber bidirectional optical fiber transmission system based on asymmetric modulation spectrum |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| ASS | Succession or assignment of patent right |
Owner name: WANGDONG PHOTOELECTRIC TECHNOLOGY CO., LTD., CHENG Free format text: FORMER OWNER: HUANG LAN Effective date: 20120518 |
|
| C41 | Transfer of patent application or patent right or utility model | ||
| COR | Change of bibliographic data |
Free format text: CORRECT: ADDRESS; FROM: 610081 CHENGDU, SICHUAN PROVINCE TO: 610041 CHENGDU, SICHUAN PROVINCE |
|
| TR01 | Transfer of patent right |
Effective date of registration: 20120518 Address after: 11 No. 610041 Chengdu high tech Zone Gaopeng Avenue Patentee after: Wangdong Photoelectric Technology Co., Ltd., Chengdu City Address before: 610081 Sichuan city in Chengdu Province, a Shunsha Huan Lu Bei San Duan, Lane 8, CSG building A block 9 floor Patentee before: Huang Lan |
|
| C56 | Change in the name or address of the patentee | ||
| CP01 | Change in the name or title of a patent holder |
Address after: 11 No. 610041 Sichuan province Chengdu high tech Zone Gaopeng Avenue Patentee after: Chengdu Neton Optoelectronic Technologies Co., Ltd. Address before: 11 No. 610041 Sichuan province Chengdu high tech Zone Gaopeng Avenue Patentee before: Wangdong Photoelectric Technology Co., Ltd., Chengdu City |
|
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20061108 Termination date: 20141111 |
|
| EXPY | Termination of patent right or utility model |