CN102868446A - Optical line terminal (OLT) optical module employing double-avalanche photodiode (APD) shared booster circuit - Google Patents
Optical line terminal (OLT) optical module employing double-avalanche photodiode (APD) shared booster circuit Download PDFInfo
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- CN102868446A CN102868446A CN2012103504792A CN201210350479A CN102868446A CN 102868446 A CN102868446 A CN 102868446A CN 2012103504792 A CN2012103504792 A CN 2012103504792A CN 201210350479 A CN201210350479 A CN 201210350479A CN 102868446 A CN102868446 A CN 102868446A
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Abstract
The invention discloses an optical line terminal (OLT) optical module employing a double-avalanche photodiode (APD) shared booster circuit. The OLT optical module comprises a driver, an optical transceiving device and a limiting amplifier which are sequentially connected, wherein an optical time domain reflectometry (OTDR) module is connected between the optical transceiving device and the driver; the optical transceiving device comprises a laser, an optical splitter, a wavelength division multiplexer (WDM), a first APD receiver and a second APD receiver; and the first APD receiver and the second APD receiver are connected with the same booster circuit. According to the optical module, the testing performance of optical fiber OTDR is improved; and meanwhile, the two receivers share the same booster circuit, the number of the circuit modules in the whole optical module is reduced, the space of the circuit board is saved, and the material cost of the optical module is reduced.
Description
Technical field
The present invention relates to the optical communication technique field, particularly a kind of OLT optical module that uses the shared booster circuit of two APD.
Background technology
In the current information age, the destroyed communication accidental interruption that causes of optical fiber cable will produce immeasurable loss, in order to reduce the loss, need the abnormal conditions in the monitoring fibre circuit, and alarm, and loss is dropped to minimum.In order to ensure the reliability of transmission information, must adopt the OTDR technology that the performance of optical networks fibre is carried out real-time monitoring.Used OTDR monitoring equipment all is test signal to be coupled in the passive optical network by wavelength division multiplexer WDM in the OLT device external at present.Use separately at present OTDR equipment that the performance of optical fiber is carried out Real-Time Monitoring, OTDR equipment price general charged is all higher, has increased cost.
In order to reduce cost, in the prior art OTDR monitoring function is integrated in the OLT optical module, utilize the OLT optical module of integrated OTDR monitoring function that the performance of optical fiber is carried out real-time monitoring, cost.The structured flowchart of the OLT optical module of existing integrated OTDR monitoring function as shown in Figure 2, wherein, receiver 1 adopts avalanche photodide APD, receiver 2 adopts PN homojunction photodiode PIN, the OTDR dynamic range of this optical module is lower, in order to improve the OTDR dynamic range, receiver 2 needs to adopt the APD photodiode.But because inner integrated two the APD photodiodes of optical module, just needing the two-way booster circuit to be respectively two APD provides higher negater circuit, but the two-way booster circuit must take more circuit board space and cause Material Cost to improve.
Summary of the invention
The object of the invention is to overcome existing above-mentioned deficiency in the prior art, the OLT optical module of the shared booster circuit of the two APD of use of a kind of OTDR of raising dynamic range, saving circuit board space and reduction Material Cost is provided.
In order to realize the foregoing invention purpose, the invention provides following technical scheme:
A kind of OLT optical module that uses the shared booster circuit of two APD, comprise the driver, optical transceiving device and the limiting amplifier that connect successively, be connected with the OTDR module between described optical transceiving device and the described driver, described optical transceiving device comprises laser, optical branching device, wavelength division multiplexer WDM, an APD receiver and the 2nd APD receiver; A described APD receiver connects same road booster circuit with the 2nd APD receiver.
Wherein, described laser is luminous under described driver drives; The light that laser sends is divided into multichannel through described optical branching device, and multi-path light enters and outputs in the optical fiber after described wavelength division multiplexer closes ripple; Behind the wavelength division multiplexer WDM partial wave of the light in the optical fiber in this optical module, one road light receives through an APD receiver, output after limiting amplifier amplifies; Another road enters through described optical branching device, the 2nd APD receiver successively carries out the optical fiber property test in the described OTDR module, the OTDR module generates test curve and output reports.
Described OTDR module comprises signal acquisition circuit, pulse generation and signal processing circuit, the pulse driving circuit that connects successively; Described signal acquisition circuit input connects the 2nd APD receiver output, and described pulse driving circuit output connects the input of described laser.
Preferably, described booster circuit connects a described APD receiver by the first resistance, biasing circuit successively; Described booster circuit connects described the 2nd APD receiver by the second resistance, bleeder circuit successively.
Further, described biasing circuit is mirror current source.
Above-mentionedly comprise the 1490nm light that ONT sends in the optical-fiber network 1310nm light and fiber reflection are returned from the light in the optical fiber, 1310nm light is received by an APD receiver behind wavelength division multiplexer WDM partial wave, output after limiting amplifier amplifies; 1490nm light enters through described optical branching device, the 2nd APD receiver successively and carries out the optical fiber property test in the described OTDR module.
Compared with prior art, beneficial effect of the present invention:
Two receivers all adopt avalanche photodide APD receiver in the optical module of the present invention, and an APD receiver connects same road booster circuit with the 2nd APD receiver, the APD receiver sensitivity is good, dynamic range is high, improved optical fiber OTDR test performance, two receivers share No. one booster circuit simultaneously, and circuit module reduces in the whole optical module, save the space of circuit board, reduced the Material Cost of optical module.
Description of drawings:
Fig. 1 is existing OLT optical module structure block diagram.
Fig. 2 is the structured flowchart that the two APD of use of the present invention share the OLT optical module of booster circuit.
Fig. 3 be in the OLT optical module of the present invention between booster circuit and an APD receiver and the 2nd APD receiver circuit be connected block diagram.
Embodiment
The present invention is described in further detail below in conjunction with test example and embodiment.But this should be interpreted as that the scope of the above-mentioned theme of the present invention only limits to following embodiment, all technology that realizes based on content of the present invention all belong to scope of the present invention.
As shown in Figure 2, the two APD of use of the present invention share the OLT optical module of booster circuit, comprise the driver, optical transceiving device and the limiting amplifier that connect successively, be connected with the OTDR module between described optical transceiving device and the described driver, described optical transceiving device comprises laser, optical branching device, wavelength division multiplexer WDM, an APD receiver and the 2nd APD receiver; A described APD receiver connects same road booster circuit with the 2nd APD receiver.
Wherein, described laser is luminous under described driver drives; The light that laser sends is divided into multichannel through described optical branching device, and multi-path light enters and outputs in the optical fiber after described wavelength division multiplexer closes ripple; Behind the wavelength division multiplexer WDM partial wave of the light in the optical fiber in this optical module, one road light receives through an APD receiver, output after limiting amplifier amplifies; Another road enters through described optical branching device, the 2nd APD receiver successively carries out the optical fiber property test in the described OTDR module, the OTDR module generates test curve and output reports.Above-mentionedly comprise the 1490nm light that 1310nm light that optical networks network terminal ONT sends and fiber reflection are returned from the light in the optical fiber, 1310nm light is received by an APD receiver behind wavelength division multiplexer WDM partial wave, output after limiting amplifier amplifies; 1490nm light enters through described optical branching device, the 2nd APD receiver successively and carries out the optical fiber property test in the described OTDR module.
Concrete, described OTDR module comprises signal acquisition circuit, pulse generation and signal processing circuit, the pulse driving circuit that connects successively; Described signal acquisition circuit input connects the second avalanche photodide output, and described pulse driving circuit output connects the input of described laser.During work, the pulse driving circuit of OTDR inside modules produces light pulse signal, utilize this light pulse signal that the data-signal of driver output is carried out premodulated, then drive laser is luminous, be 1490nm light, 1490nm light passes through optical branching device Splitter successively, wavelength division multiplexer enters in the optical fiber, the 1490nm light that fiber reflection is returned is by the 1:9 optical branching device, be converted to the signal of telecommunication through the 2nd APD receiver, signal acquisition circuit in the OTDR module gathers this signal of telecommunication, obtain the data of a series of sampled points, each data represents the reflected optical power value of certain point in the optical fiber.Enter the distance of end as abscissa, the reflected optical power value of each sampled point obtains the relation of optical fiber attenuation and length as ordinate, thereby reflects the performance of tested optical fiber.
Consult Fig. 2 and Fig. 3, preferred, described booster circuit connects a described APD receiver by the first resistance, biasing circuit successively, reverse voltage is provided for an APD receiver; Described booster circuit connects described the 2nd APD receiver by the second resistance, bleeder circuit successively, for the 2nd APD receiver provides reverse voltage.Wherein, described biasing circuit adopts mirror current source.In integrated circuit, in order to provide suitable bias current to each amplifying stage, determine quiescent points at different levels, usually use biasing circuit.Common biasing circuit has mirror current source, and mirror current source is effectively eliminated ectocine and stablized an APD receiver, makes an APD receiver operation in optimum state, has improved the device service behaviour.
Two receivers all adopt avalanche photodide APD receiver in the optical module of the present invention, and an APD receiver connects same road booster circuit with the 2nd APD receiver, the APD receiver sensitivity is good, dynamic range is high, improved optical fiber OTDR test performance, two receivers share No. one booster circuit simultaneously, and circuit module reduces in the whole optical module, save the space of circuit board, reduced the Material Cost of optical module.
The above only is preferred embodiment of the present invention, not in order to limiting the present invention, all any modifications of doing within the spirit and principles in the present invention, is equal to and replaces and improvement etc., all should be included within protection scope of the present invention.
Claims (5)
1. one kind is used two APD to share the OLT optical module of booster circuit, comprise the driver, optical transceiving device and the limiting amplifier that connect successively, be connected with the OTDR module between described optical transceiving device and the described driver, it is characterized in that described optical transceiving device comprises laser, optical branching device, wavelength division multiplexer WDM, an APD receiver and the 2nd APD receiver; A described APD receiver connects same road booster circuit with the 2nd APD receiver;
Wherein, described laser is luminous under described driver drives; The light that laser sends is divided into multichannel through described optical branching device, and multi-path light enters and outputs in the optical fiber after described wavelength division multiplexer closes ripple; Behind the wavelength division multiplexer WDM partial wave of the light in the optical fiber in this optical module, one road light receives through an APD receiver, output after limiting amplifier amplifies; Another road light enters through described optical branching device, the 2nd APD receiver successively and carries out the optical fiber property test in the described OTDR module, and the OTDR module generates test curve and output reports.
2. the two APD of use according to claim 1 share the OLT optical module of booster circuit, it is characterized in that described OTDR module comprises signal acquisition circuit, pulse generation and signal processing circuit, the pulse driving circuit that connects successively; Described signal acquisition circuit input connects the 2nd APD receiver output, and described pulse driving circuit output connects the input of described laser.
3. the two APD of use according to claim 1 and 2 share the OLT optical module of booster circuit, it is characterized in that described booster circuit connects a described APD receiver by the first resistance, biasing circuit successively; Described booster circuit connects described the 2nd APD receiver by the second resistance, bleeder circuit successively.
4. the two APD of use according to claim 3 share the OLT optical module of booster circuit, it is characterized in that described biasing circuit is mirror current source.
5. the two APD of use according to claim 4 share the OLT optical module of booster circuit, it is characterized in that, comprise the 1490nm light that ONT sends in the optical-fiber network 1310nm light and fiber reflection are returned from the light in the optical fiber, 1310nm light is behind wavelength division multiplexer WDM partial wave, received output after limiting amplifier amplifies by an APD receiver; 1490nm light enters through described optical branching device, the 2nd APD receiver successively and carries out the optical fiber property test in the described OTDR module.
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106466175A (en) * | 2015-08-14 | 2017-03-01 | 黄富滨 | The intelligent ring of the outer liquid ion relative concentration of measurement human body cell |
| CN110726919A (en) * | 2019-10-25 | 2020-01-24 | 中国电子科技集团公司第四十四研究所 | Array APD photoelectric parameter testing system |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20070116467A1 (en) * | 2005-11-23 | 2007-05-24 | Samsung Electronics Co.; Ltd | Passive optical network |
| CN102170309A (en) * | 2011-03-24 | 2011-08-31 | 索尔思光电（成都）有限公司 | Optical line terminal (OLT) optical module integrating optical time domain reflectometer (OTDR) monitoring function |
| CN102356573A (en) * | 2011-08-18 | 2012-02-15 | 华为技术有限公司 | Optical sending and receiving component and optical sending and receiving module |
| CN102386967A (en) * | 2011-10-12 | 2012-03-21 | 成都优博创技术有限公司 | Reverse biasing circuit of dual channel optical module avalanche photodiode |
| US20120163800A1 (en) * | 2010-12-22 | 2012-06-28 | Telefonaktiebolaget Lm Ericsson (Publ) | Optical Time Domain Reflectometry (OTDR) Trace Analysis in PON Systems |
-
2012
- 2012-09-20 CN CN201210350479.2A patent/CN102868446B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20070116467A1 (en) * | 2005-11-23 | 2007-05-24 | Samsung Electronics Co.; Ltd | Passive optical network |
| US20120163800A1 (en) * | 2010-12-22 | 2012-06-28 | Telefonaktiebolaget Lm Ericsson (Publ) | Optical Time Domain Reflectometry (OTDR) Trace Analysis in PON Systems |
| CN102170309A (en) * | 2011-03-24 | 2011-08-31 | 索尔思光电（成都）有限公司 | Optical line terminal (OLT) optical module integrating optical time domain reflectometer (OTDR) monitoring function |
| CN102356573A (en) * | 2011-08-18 | 2012-02-15 | 华为技术有限公司 | Optical sending and receiving component and optical sending and receiving module |
| CN102386967A (en) * | 2011-10-12 | 2012-03-21 | 成都优博创技术有限公司 | Reverse biasing circuit of dual channel optical module avalanche photodiode |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106466175A (en) * | 2015-08-14 | 2017-03-01 | 黄富滨 | The intelligent ring of the outer liquid ion relative concentration of measurement human body cell |
| CN110726919A (en) * | 2019-10-25 | 2020-01-24 | 中国电子科技集团公司第四十四研究所 | Array APD photoelectric parameter testing system |
| CN110726919B (en) * | 2019-10-25 | 2021-10-26 | 中国电子科技集团公司第四十四研究所 | Array APD photoelectric parameter testing system |
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Inventor after: Wu Yunxian Inventor after: Zhao Fuqiang Inventor after: Yang Yi Inventor before: Chu Yunxian Inventor before: Zhao Fuqiang Inventor before: Yang Yi |
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