CN105871455A - OSC amplification EDFA device for optical line protection system - Google Patents
OSC amplification EDFA device for optical line protection system Download PDFInfo
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- CN105871455A CN105871455A CN201610373546.0A CN201610373546A CN105871455A CN 105871455 A CN105871455 A CN 105871455A CN 201610373546 A CN201610373546 A CN 201610373546A CN 105871455 A CN105871455 A CN 105871455A
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B10/00—Transmission systems employing electromagnetic waves other than radio-waves, e.g. infrared, visible or ultraviolet light, or employing corpuscular radiation, e.g. quantum communication
- H04B10/07—Arrangements for monitoring or testing transmission systems; Arrangements for fault measurement of transmission systems
- H04B10/075—Arrangements for monitoring or testing transmission systems; Arrangements for fault measurement of transmission systems using an in-service signal
- H04B10/077—Arrangements for monitoring or testing transmission systems; Arrangements for fault measurement of transmission systems using an in-service signal using a supervisory or additional signal
- H04B10/0773—Network aspects, e.g. central monitoring of transmission parameters
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B10/00—Transmission systems employing electromagnetic waves other than radio-waves, e.g. infrared, visible or ultraviolet light, or employing corpuscular radiation, e.g. quantum communication
- H04B10/03—Arrangements for fault recovery
- H04B10/038—Arrangements for fault recovery using bypasses
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B10/00—Transmission systems employing electromagnetic waves other than radio-waves, e.g. infrared, visible or ultraviolet light, or employing corpuscular radiation, e.g. quantum communication
- H04B10/07—Arrangements for monitoring or testing transmission systems; Arrangements for fault measurement of transmission systems
- H04B10/075—Arrangements for monitoring or testing transmission systems; Arrangements for fault measurement of transmission systems using an in-service signal
- H04B10/077—Arrangements for monitoring or testing transmission systems; Arrangements for fault measurement of transmission systems using an in-service signal using a supervisory or additional signal
- H04B10/0775—Performance monitoring and measurement of transmission parameters
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- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Optical Communication System (AREA)
Abstract
The invention provides an OSC amplification EDFA device for an optical line protection system. The OSC amplification EDFA device comprises an optical amplification module, a wave dividing unit used for dividing an input signal into an OSC signal and a service signal subjected to signal amplification by the optical amplification module, a light dividing device used for dividing the separated OSC signal into two paths, an optical power detection unit used for being connected with the OSC signal output by the first path of the light dividing device and used for detecting whether the wavelength of the OSC signal is 1490 nm or 1510 nm, a first optical relay used for relaying the OSC signal with the wavelength being 1490 nm, a second optical relay used for relaying the OSC signal with the wavelength being 1510 nm, a control unit used for selecting the first optical relay or the second optical relay according to a detection result of the optical power detection unit to carry out photoelectric relaying on the OSC signal output by the other path of the light dividing device, and a wave mixing unit used for carrying out optical coupling on the service signal subjected to signal amplification and the OSC signal subjected to photoelectric relaying and then outputting the coupled signal. By means of the OSC amplification EDFA device for the optical line protection system, the OSC signal which cannot be amplified by the EDFA can be automatically worked out, and subjected to signal relaying and then wave mixing and outputting and then continue to be transmitted.
Description
Technical field
The present invention relates to Optical Line Protection technical field, particularly relate to the EDFA device that a kind of band OSC for optical link protecting system amplifies.
Background technology
Along with the progressively application of dense wavelength division multiplexing system, OLP(fibre circuit automatically switches protection) system has become as the important tool safeguarding wavelength-division system safety.But, OLP system yet suffers from some hidden danger, especially in the OLP system of multiple cascades, how to prevent upstream from switching the downstream caused and switches by mistake, needs to introduce new protection judgment mechanism.The most frequently used improved method is integrated service luminous power and osc light power monitoring, when both are simultaneously less than threshold value, it is judged that for this line fault.Owing to osc signal luminous power does not changes with business light, therefore can ensure that the reliability that this section of circuit switching judges.
Osc signal is introduced in OLP protection section, transmission line combines osc signal wavelength (1490nm or 1510nm) and service wavelength (1550nm), and osc signal wavelength is not in EDFA amplifies wave band.Before then this comprehensive optical signal enters EDFA, need first to be solved by osc signal, carry out photoelectricity relay process, carry out again after standby service optical signal amplification closing ripple, continue transmission.Traditional EDFA equipment does not process the ability of osc signal, then must the most additionally increase conjunction wavelength-division and involve osc signal processing equipment, add line project difficulty.
Chinese patent application CN104134924A proposes a kind of EDFA structure, including amplifying light path and pump light source, belongs to the upgrading of traditional E DFA Structure, does not consider that osc signal processes.Chinese patent application CN103904550A proposes a kind of RFA and EDFA Hybrid amplifier device with Gain Automatic control, including EDFA module, RFA module and OSC power monitoring unit etc..This invention only considered the osc signal of Single wavelength, does not process the osc signal of two kinds of different wave lengths.
Therefore, it should redesign for the EDFA in the OLP protection section introducing osc signal, be internally integrated the demultiplexing function to two kinds of wavelength osc signals, keep number of devices constant, simplify transmission system.For this demand, it is still blank in the market.
Summary of the invention
The technical problem to be solved in the present invention is: the EDFA device providing a kind of band OSC for optical link protecting system to amplify, and can automatically be solved by the osc signal that can not be amplified by EDFA, carries out signal relay, then closes ripple output, continues transmission.
The present invention solves that the technical scheme that above-mentioned technical problem is taked is: the EDFA device that a kind of band OSC for optical link protecting system amplifies, including light amplification module, it is characterised in that: it also includes:
Partial wave unit, for being divided into osc signal and service signal by input signal；Service signal is carried out signal amplification by light amplification module；
Beam splitter, for being divided into 2 tunnels by the osc signal separated；
Luminous power detector unit, is connected with 1 tunnel output osc signal of beam splitter, is 1490nm or 1510nm for detecting the wavelength of osc signal；
First optical repeater, for the osc signal of a length of 1490nm of junction waves；
Second optical repeater, for the osc signal of a length of 1510nm of junction waves；
Control unit, for the testing result according to luminous power detector unit, selects in the first optical repeater or the second optical repeater, and the another 1 tunnel output osc signal of beam splitter is carried out photoelectricity relaying；
Wave combining unit, the osc signal after the service signal that signal is amplified and photoelectricity relaying, it is optically coupled output.
By such scheme, it also includes that the first selection switch and second controlled by control unit selects switch；Wherein first selecting the input of switch to be connected with the another 1 tunnel output osc signal of beam splitter, first selects 2 outfans of switch to be connected with the first optical repeater and the second optical repeater respectively；Second selects 2 inputs of switch to be connected with the first optical repeater and the second optical repeater respectively, and second selects the outfan of switch to be connected with the input of wave combining unit.
By such scheme, the splitting ratio of described beam splitter is 95%, and wherein the osc signal of 5% sends into luminous power detector unit, and the osc signal of 95% carries out photoelectricity relaying.
The invention have the benefit that the present invention is by increasing control unit and 2 optical repeaters; in addition to the service signal completing routine amplifies; automatically the osc signal that can not be amplified by EDFA can be solved, signal relay, again close ripple output, continue transmission; reduce redundant equipment to lay; avoid osc signal to lose after conventional EDFA amplifier, make dwdm system transmission performance not protected system to be affected by the optical link synchronism switching of comprehensive osc signal.
Accompanying drawing explanation
Fig. 1 is the application schematic diagram of one embodiment of the invention.
Fig. 2 is the structural representation of one embodiment of the invention.
In figure: Q1-first device, second device of Q2-, 1-partial wave unit, 2-wave combining unit, 3-first selects switch, 4-second to select switch, 5-the first optical repeater, 6-the second optical repeater, 7-control unit, 8-beam splitter, 9-luminous power detector unit, 10-light amplification module.
Detailed description of the invention
Below in conjunction with instantiation and accompanying drawing, the present invention is further described.
The present invention provides the EDFA device that a kind of band OSC for optical link protecting system amplifies, as in figure 2 it is shown, include light amplification module 10, also includes: partial wave unit 1, for input signal is divided into osc signal and service signal；Service signal is carried out signal amplification by light amplification module 10；Beam splitter 8, for being divided into 2 tunnels by the osc signal separated；Luminous power detector unit 9, is connected with 1 tunnel output osc signal of beam splitter 8, is 1490nm or 1510nm for detecting the wavelength of osc signal；First optical repeater 5, for the osc signal of a length of 1490nm of junction waves；Second optical repeater 6, for the osc signal of a length of 1510nm of junction waves；Control unit 7, for the testing result according to luminous power detector unit 9, selects in the first optical repeater 5 or the second optical repeater 6, and the another 1 tunnel output osc signal of beam splitter 8 is carried out photoelectricity relaying；Wave combining unit 2, the osc signal after the service signal that signal is amplified and photoelectricity relaying, it is optically coupled output.
Wherein, light amplification module 10 can be conventional existing EDFA light amplification module, or other module being capable of service signal carries out light amplification.
Refining further, it also includes that the first selection switch 3 and second controlled by control unit 7 selects switch 4；Wherein first selecting the input of switch 3 to be connected with the another 1 tunnel output osc signal of beam splitter 8, first selects 2 outfans of switch 3 to be connected with the first optical repeater 5 and the second optical repeater 6 respectively；Second selects 2 inputs of switch 4 to be connected with the first optical repeater 5 and the second optical repeater 6 respectively, and second selects the outfan of switch 4 to be connected with the input of wave combining unit 2.
Concrete, owing to luminous power detector unit 9 only needs little light to detect, and most light needs to relay for photoelectricity, therefore, in the present embodiment, the splitting ratio of described beam splitter is 95%, and wherein the osc signal of 5% sends into luminous power detector unit 9, and the osc signal of 95% carries out photoelectricity relaying.
The work process of the present embodiment is: service signal that the signal of input is divided into wavelength to be 1550nm through partial wave unit 1 and the osc signal of unknown wavelength, service signal amplifies through light amplification module 10 signal, the osc signal of the unknown wavelength device 8 that is split is divided into 2 tunnels, wherein the osc signal of 5% sends into luminous power detector unit 9, and testing result is sent to control unit 7 by luminous power detector unit 9.If result is 1490nm, then control unit 7 sends signal, control the first selection switch 3 and second select switch 4 selection the first optical repeaters 5 to 95% osc signal carry out photoelectricity relaying；If result is 1510nm, then control unit 7 sends signal, control the first selection switch 3 and second select switch 4 selection the second optical repeaters 6 to 95% osc signal carry out photoelectricity relaying.Together with the osc signal after photoelectricity relaying service signal after amplifying, wave combining unit 2 carry out photoelectric coupling, close ripple output.
Fig. 1 is the application schematic diagram of one embodiment of the invention; between OLP1 and OLP2; first device Q1 and second device Q2 is set; constitute the optical link synchronism switching protection system of a kind of comprehensive osc signal; owing to this optical link protecting system needs the signal monitoring active and standby light-path in real time to transmit state; if arbitrary light-path breaks down or upstream input optical power produces change, detect the business light signal strength and osc signal intensity being currently received simultaneously.Due to osc signal intensity not with this section business optical power change, if both are simultaneously less than threshold value, then judge line fault, send warning signal, coordinate built in light emitter, built in light receptor, control the light switching switch being connected with this path, make two light switching switch synchronism switching to standby light-path.Therefore, this device is it can be avoided that osc signal is lost after conventional EDFA amplifier, it is ensured that the work of the optical link protecting system of comprehensive osc signal judges, makes dwdm system transmission performance not protected system to be affected by the optical link synchronism switching of comprehensive osc signal.
Above example is merely to illustrate design philosophy and the feature of the present invention, its object is to make those skilled in the art will appreciate that present disclosure and implement according to this, and protection scope of the present invention is not limited to above-described embodiment.So, all equivalent variations made according to disclosed principle, mentality of designing or modification, all within protection scope of the present invention.
Claims (3)
1. the EDFA device amplified for the band OSC of optical link protecting system, including light amplification module, it is characterised in that: it also includes:
Partial wave unit, for being divided into osc signal and service signal by input signal；Service signal is carried out signal amplification by light amplification module；
Beam splitter, for being divided into 2 tunnels by the osc signal separated；
Luminous power detector unit, is connected with 1 tunnel output osc signal of beam splitter, is 1490nm or 1510nm for detecting the wavelength of osc signal；
First optical repeater, for the osc signal of a length of 1490nm of junction waves；
Second optical repeater, for the osc signal of a length of 1510nm of junction waves；
Control unit, for the testing result according to luminous power detector unit, selects in the first optical repeater or the second optical repeater, and the another 1 tunnel output osc signal of beam splitter is carried out photoelectricity relaying；
Wave combining unit, the osc signal after the service signal that signal is amplified and photoelectricity relaying, it is optically coupled output.
The EDFA device that band OSC for optical link protecting system the most according to claim 1 amplifies, it is characterised in that: it also includes that the first selection switch and second controlled by control unit selects switch；Wherein first selecting the input of switch to be connected with the another 1 tunnel output osc signal of beam splitter, first selects 2 outfans of switch to be connected with the first optical repeater and the second optical repeater respectively；Second selects 2 inputs of switch to be connected with the first optical repeater and the second optical repeater respectively, and second selects the outfan of switch to be connected with the input of wave combining unit.
The EDFA device that band OSC for optical link protecting system the most according to claim 1 amplifies, it is characterised in that: the splitting ratio of described beam splitter is 95%, and wherein the osc signal of 5% sends into luminous power detector unit, and the osc signal of 95% carries out photoelectricity relaying.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610373546.0A CN105871455B (en) | 2016-05-31 | 2016-05-31 | The EDFA devices of band OSC amplifications for optical link protecting system |
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| CN201610373546.0A CN105871455B (en) | 2016-05-31 | 2016-05-31 | The EDFA devices of band OSC amplifications for optical link protecting system |
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| CN105871455A true CN105871455A (en) | 2016-08-17 |
| CN105871455B CN105871455B (en) | 2018-08-28 |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2018040384A1 (en) * | 2016-08-31 | 2018-03-08 | 武汉光迅科技股份有限公司 | Optical multiplexing and demultiplexing module having automatic discovery function |
| CN110995336A (en) * | 2019-11-15 | 2020-04-10 | 武汉光迅信息技术有限公司 | OLP transmission link switching method and device, storage medium and OLP |
| CN112217568A (en) * | 2020-09-18 | 2021-01-12 | 武汉光迅科技股份有限公司 | Optical signal processing device and communication system |
| CN113541795A (en) * | 2020-04-17 | 2021-10-22 | 烽火通信科技股份有限公司 | Single-fiber bidirectional implementation method and equipment for OSC channel of wavelength division system |
| CN114374429A (en) * | 2021-12-08 | 2022-04-19 | 武汉光迅科技股份有限公司 | C + + band EDFA device with single-fiber bidirectional OSC |
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| CN203933633U (en) * | 2014-06-30 | 2014-11-05 | 武汉光迅科技股份有限公司 | A kind of portable light fiber communication wavelength-division multiplex system emergency first-aid repair equipment |
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Cited By (9)
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| WO2018040384A1 (en) * | 2016-08-31 | 2018-03-08 | 武汉光迅科技股份有限公司 | Optical multiplexing and demultiplexing module having automatic discovery function |
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| CN110995336A (en) * | 2019-11-15 | 2020-04-10 | 武汉光迅信息技术有限公司 | OLP transmission link switching method and device, storage medium and OLP |
| CN113541795A (en) * | 2020-04-17 | 2021-10-22 | 烽火通信科技股份有限公司 | Single-fiber bidirectional implementation method and equipment for OSC channel of wavelength division system |
| CN113541795B (en) * | 2020-04-17 | 2022-04-15 | 烽火通信科技股份有限公司 | Single-fiber bidirectional implementation method and equipment for OSC channel of wavelength division system |
| CN112217568A (en) * | 2020-09-18 | 2021-01-12 | 武汉光迅科技股份有限公司 | Optical signal processing device and communication system |
| CN112217568B (en) * | 2020-09-18 | 2022-03-08 | 武汉光迅科技股份有限公司 | Optical signal processing device and communication system |
| CN114374429A (en) * | 2021-12-08 | 2022-04-19 | 武汉光迅科技股份有限公司 | C + + band EDFA device with single-fiber bidirectional OSC |
| CN114374429B (en) * | 2021-12-08 | 2023-07-04 | 武汉光迅科技股份有限公司 | C++ band EDFA device with single-fiber bidirectional OSC |
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| CN105871455B (en) | 2018-08-28 |
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