CN1501597A - A remote pump transmission system - Google Patents
A remote pump transmission system Download PDFInfo
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- CN1501597A CN1501597A CNA021525501A CN02152550A CN1501597A CN 1501597 A CN1501597 A CN 1501597A CN A021525501 A CNA021525501 A CN A021525501A CN 02152550 A CN02152550 A CN 02152550A CN 1501597 A CN1501597 A CN 1501597A
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- doped fiber
- pumping
- receiving terminal
- pump light
- transmission system
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Abstract
A remote pump transmission system relating to electric communication technology, comprising optical transmission system a transmitting end, a receiving end and a remote pump amplifier in the transmission link, characterized by that, the receiving end has an adjustable optical coupler, the pumping light is divided into two branches after passing the adjustable optical coupler directly, one branch is used as the pumping light source as the remote pumping amplifier, the other branch is used as the pumping light source for the local erbium-doped fiber on the receiving end. The invention can exert the remote pump amplifier action to the maximum limit and perform flexible control to the system output spectrum.
Description
Technical field
The present invention relates to electrical communication technology, relate in particular to a kind of distant pump transmission system.
Background technology
Distant pump Optical Amplification Technology is mainly used in the non-relay optical transmission system, in order to extend transmission distance, improve the system power budget, as shown in Figure 1, in signal transmission link, add the Er-doped fiber more than a section or a section, the pumping source of 1480nm wavelength can be placed on system terminal, i.e. transmitting terminal or receiving terminal from tens kilometers places of Er-doped fiber, by signal transmission fiber or special optical fiber pump light is sent to the Er-doped fiber place, realizes the amplification of flashlight.Among Fig. 1, the far-end pumping source of remote optical pumping amplifier is placed on receiving terminal, use be bypass backward pump mode, also can use the pumping of bypass forward direction and with road pumping modes such as (being that pump light is by the signal transmission fiber transmission).
In this Remote optical pumping amplifier structure, for sensitivity that improves receiver and the loss that compensates receiving terminal dispersion compensation module DCM introducing to a certain extent, after whole link signal transmission fiber, be receiving terminal used a preamplifier PA foremost, this preamplifier PA is generally gain locking, its gain spectral and noise figure are determined basically, like this, when system structure design, unique variable be exactly structure and the performance parameter of remote optical pumping amplifier ROPA, therefore, when carrying out remote optical pumping amplifier ROPA design, can occur for the complementation that realizes gain spectral shape between the different amplifiers to satisfy certain spectrum flatness, such as, for power amplifier BA, the coupling of remote optical pumping amplifier ROPA and preamplifier PA three gain spectral, and the size of sacrifice remote optical pumping amplifier ROPA gain, slackened the application potential of remote optical pumping amplifier ROPA so to a great extent, in addition, use power pre-emphasis at transmitting terminal, also can adjust the flatness of link output spectrum, but this method operates and is not convenient especially, and can't realize the real-time and dynamic adjustment.
Summary of the invention
The object of the present invention is to provide a kind of distant pump transmission system, can bring into play the remote optical pumping amplifier effect to greatest extent and can control realization link gain and the dynamic spectrum flatness of adjusting flexibly system's output spectrum.
The distant pump transmission system that realizes the object of the invention comprises the remote optical pumping amplifier in transmitting terminal, receiving terminal and the transmission link of optical transmission system, described remote optical pumping amplifier has the far-end pumping source, it is characterized in that: the front end of described receiving terminal uses one section Er-doped fiber as preamplifier, the output of the far-end pumping source of described remote optical pumping amplifier is connected to a tunable optical coupler, pump light directly is divided into two-way through this tunable optical coupler, one tunnel pump light source as described remote optical pumping amplifier, another road is as the pump light source of the local Er-doped fiber that is connected on receiving terminal.
Described another road pump light process from the output of tunable optical coupler is arranged on the pump light source of the wavelength division multiplexer at Er-doped fiber rear as the local Er-doped fiber that is connected on receiving terminal, to this this locality Er-doped fiber backward pumping;
Described another road pump light process from the output of tunable optical coupler is arranged on the pump light source of the wavelength division multiplexer in Er-doped fiber the place ahead as the local Er-doped fiber that is connected on receiving terminal, to this this locality Er-doped fiber forward pumping;
Described local Er-doped fiber connects isolator;
Connected a supervisory control system before receiving terminal Wave decomposing multiplexer DMUX, this supervisory control system comprises optical spectrum monitor module and control circuit, and control circuit is controlled the splitting ratio of described tunable optical coupler by the feedback information of optical spectrum monitor module;
Described Er-doped fiber can be the Er-doped fiber of different levels of doping.
Beneficial effect of the present invention is: in the present invention, adopt one section Er-doped fiber to replace the preamplifier PA of receiving terminal in the prior art, by using a tunable optical coupler with the pump light separated into two parts, a part is as the pump light source of remote optical pumping amplifier in the transmission link, another part is as the pump light source of local Er-doped fiber, in use, realize the flatness of high-gain and (dynamically) adjustment spectrum by the size that changes coupling ratio.Like this, can under the constant situation of the power output that keeps pumping source, bring into play the effect of remote optical pumping amplifier as much as possible, improve its gain.Simultaneously, realize the adjustment of link waveform by the coupling ratio that changes the tunable optical coupler, make that whole link output spectrum is comparatively smooth, therefore, the present invention can bring into play the remote optical pumping amplifier effect to greatest extent and can control flexibly system's output spectrum, moreover, in the present invention, reduce the use of an image intensifer of receiving terminal, reduced cost, improved overall price/performance ratio of the present invention.Insert a supervisory control system before the receiving terminal Wave decomposing multiplexer DMUX, system's output spectrum is monitored, produce corresponding feedback information, coupling ratio to the tunable optical coupler is controlled, like this, the present invention can adjust in real time to system's output spectrum, has further improved operability of the present invention and practicality.
Description of drawings
Fig. 1 is a Remote optical pumping amplifier structural representation of the prior art;
Fig. 2 is embodiment 1 a system configuration schematic diagram:
Fig. 3 is embodiment 2 system configuration schematic diagrames.
Embodiment
With embodiment the present invention is described in further detail with reference to the accompanying drawings below:
Embodiment 1:
This distant pump transmission system comprises the remote optical pumping amplifier in transmitting terminal, receiving terminal and the transmission link of optical transmission system, described remote optical pumping amplifier has the far-end pumping source, and transmitting terminal comprises that wave multiplexer MUX, dispersion compensation module DCM also link to each other successively with power amplifier BA; The front end of receiving terminal directly uses one section Er-doped fiber EDF2 as preamplifier, EDF2 can be the Er-doped fiber of different levels of doping, the output of the far-end pumping source of described remote optical pumping amplifier is connected to a tunable optical coupler, the pump light of 1480nm wavelength directly is divided into two-way through this tunable optical coupler, one tunnel pump light source as described remote optical pumping amplifier encourages the Er-doped fiber EDF1 pumping in the remote optical pumping amplifier through wavelength division multiplexer WDM; Another road is as the pump light source of the local Er-doped fiber EDF2 that is connected on receiving terminal, as shown in Figure 2, this pump light source that is used for local Er-doped fiber EDF2 is through being connected on the wavelength division multiplexer WDM at EDF2 rear to this this locality Er-doped fiber EDF2 backward pumping, local Er-doped fiber EDF2 connects isolator ISO, be connected with dispersion compensation module DCM again in turn, amplifier Amplifiers and channel-splitting filter DMUX, connect a supervisory control system before the receiving terminal Wave decomposing multiplexer DMUX, this supervisory control system comprises optical spectrum monitor module and control circuit, and control circuit is controlled the splitting ratio of described tunable optical coupler by the feedback information of optical spectrum monitor module.
In use, realize high-gain and the dynamic flatness of adjusting spectrum by the size that changes coupling ratio, in this system, output as the 1480nm pump light of pumping source can be very high, its power output can be up to several watts, the pumping that only a few percent of its output need be used for local Er-doped fiber EDF2 is just enough, can not cause tangible influence to the output performance of remote optical pumping amplifier; But the minor variations of coupling ratio can produce significantly influence to the gain of the local Er-doped fiber EDF2 that directly is connected on receiving terminal and the shape of gain spectral, compensate the spectrum change that other factors cause with this, so, to a great extent, by being regulated, the pumping of local Er-doped fiber EDF2 finishes the adjustment of link waveform.
The supervisory control system that inserts is monitored system's output spectrum, produces corresponding feedback information, and the coupling ratio of tunable optical coupler is controlled in real time, adjusted, and makes system obtain comparatively smooth output spectrum.
Embodiment 2:
Present embodiment and embodiment 1 described difference are, as shown in Figure 3, wavelength division multiplexer WDM is connected on EDF2 the place ahead, the pump light source that is used for local Er-doped fiber EDF2 is to this this locality Er-doped fiber EDF2 forward pumping, and in embodiment 1, as shown in Figure 2, be used for the pump light source of local Er-doped fiber EDF2 to this this locality Er-doped fiber EDF2 backward pumping.
As for its operation principle and method, described identical with embodiment 1, repeat no more herein.
Claims (6)
1. one kind distant pump transmission system, comprise the remote optical pumping amplifier in transmitting terminal, receiving terminal and the transmission link of optical transmission system, described remote optical pumping amplifier has the far-end pumping source, it is characterized in that: the front end of described receiving terminal uses one section Er-doped fiber as preamplifier, the output of the far-end pumping source of described remote optical pumping amplifier is connected to a tunable optical coupler, pump light directly is divided into two-way through this tunable optical coupler, one tunnel pump light source as described remote optical pumping amplifier, another road is as the pump light source of the local Er-doped fiber that is connected on receiving terminal.
2. distant pump transmission system according to claim 1, it is characterized in that: described another road pump light process from the output of tunable optical coupler is arranged on the pump light source of the wavelength division multiplexer at Er-doped fiber rear as the local Er-doped fiber that is connected on receiving terminal, to this this locality Er-doped fiber backward pumping.
3. distant pump transmission system according to claim 1, it is characterized in that: described another road pump light process from the output of tunable optical coupler is arranged on the pump light source of the wavelength division multiplexer in Er-doped fiber the place ahead as the local Er-doped fiber that is connected on receiving terminal, to this this locality Er-doped fiber forward pumping.
4. according to claim 2 or 3 described distant pump transmission systems, it is characterized in that: described local Er-doped fiber connects isolator.
5. according to claim 1 or 2 or 3 described distant pump transmission systems, it is characterized in that: before receiving terminal Wave decomposing multiplexer DMUX, connect a supervisory control system, this supervisory control system comprises optical spectrum monitor module and control circuit, and control circuit is controlled the splitting ratio of described tunable optical coupler by the feedback information of optical spectrum monitor module.
6. distant pump transmission system according to claim 1 is characterized in that: described Er-doped fiber can be the Er-doped fiber of different levels of doping.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB021525501A CN100359828C (en) | 2002-11-17 | 2002-11-17 | A remote pump transmission system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB021525501A CN100359828C (en) | 2002-11-17 | 2002-11-17 | A remote pump transmission system |
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| CN1501597A true CN1501597A (en) | 2004-06-02 |
| CN100359828C CN100359828C (en) | 2008-01-02 |
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| CNB021525501A Expired - Lifetime CN100359828C (en) | 2002-11-17 | 2002-11-17 | A remote pump transmission system |
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Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2006029569A1 (en) * | 2004-09-15 | 2006-03-23 | Huawei Technologies Co., Ltd. | An optical transmission system and the amplify method |
| CN103166708A (en) * | 2013-03-14 | 2013-06-19 | 武汉光迅科技股份有限公司 | Method for increasing output optical signal-to-noise ratio of remote pump system |
| CN104236696A (en) * | 2014-09-01 | 2014-12-24 | 中国石油天然气股份有限公司 | Optical fiber vibration detection method and system based on foreign fiber remote pump amplifying |
| CN104834070A (en) * | 2015-05-28 | 2015-08-12 | 武汉光迅科技股份有限公司 | Bypass remote pump amplifier device |
| CN105262540A (en) * | 2015-07-24 | 2016-01-20 | 国家电网公司 | Multi-wavelength single span transmission method and system |
| CN105258781A (en) * | 2015-09-24 | 2016-01-20 | 中国石油天然气股份有限公司 | Optical fiber vibration detection system and optical fiber vibration detection method |
| CN105910550A (en) * | 2016-06-24 | 2016-08-31 | 桂林创研科技有限公司 | Distributed optical fiber Bragg grating demodulation system |
| CN107171729A (en) * | 2017-07-20 | 2017-09-15 | 无锡市德科立光电子技术有限公司 | Repeatless transmission system with compound shared pumping source |
| CN109075864A (en) * | 2016-04-15 | 2018-12-21 | 骁阳网络有限公司 | Via the ROPA in the same direction for the separation optical fiber supply power for transmitting data in opposite direction |
| CN109120370A (en) * | 2018-07-27 | 2019-01-01 | 武汉光迅科技股份有限公司 | A kind of DWDM remotely pumping system that OSNR can be improved |
| CN112838893A (en) * | 2020-12-22 | 2021-05-25 | 武汉光迅科技股份有限公司 | Remote pump system, in-station pumping unit and method for automatically positioning fault of remote pump system |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN101997612A (en) * | 2009-08-10 | 2011-03-30 | 华为技术有限公司 | Optical amplification device and optical repeater |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP3860278B2 (en) * | 1997-03-13 | 2006-12-20 | 富士通株式会社 | Remote pumping wavelength division multiplexing optical transmission system |
| US6081366A (en) * | 1997-08-28 | 2000-06-27 | Lucent Technologies Inc. | Optical fiber communication system with a distributed Raman amplifier and a remotely pumped er-doped fiber amplifier |
| EP2306604B1 (en) * | 1998-07-23 | 2012-09-05 | The Furukawa Electric Co., Ltd. | Optical repeater comprising a Raman amplifier |
| US6323993B1 (en) * | 1999-02-19 | 2001-11-27 | Lucent Technologies Inc. | Method of optical signal transmission with reduced degradation by non-linear effects |
-
2002
- 2002-11-17 CN CNB021525501A patent/CN100359828C/en not_active Expired - Lifetime
Cited By (17)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN100337155C (en) * | 2004-09-15 | 2007-09-12 | 华为技术有限公司 | Light transmission system and light amplifying method used therein |
| WO2006029569A1 (en) * | 2004-09-15 | 2006-03-23 | Huawei Technologies Co., Ltd. | An optical transmission system and the amplify method |
| CN103166708A (en) * | 2013-03-14 | 2013-06-19 | 武汉光迅科技股份有限公司 | Method for increasing output optical signal-to-noise ratio of remote pump system |
| CN103166708B (en) * | 2013-03-14 | 2015-09-09 | 武汉光迅科技股份有限公司 | A kind of method improving Remote optical pumping amplifier output Optical Signal To Noise Ratio |
| CN104236696A (en) * | 2014-09-01 | 2014-12-24 | 中国石油天然气股份有限公司 | Optical fiber vibration detection method and system based on foreign fiber remote pump amplifying |
| CN104834070A (en) * | 2015-05-28 | 2015-08-12 | 武汉光迅科技股份有限公司 | Bypass remote pump amplifier device |
| CN104834070B (en) * | 2015-05-28 | 2018-03-13 | 武汉光迅科技股份有限公司 | One kind bypass remote optical pumping amplifier device |
| CN105262540A (en) * | 2015-07-24 | 2016-01-20 | 国家电网公司 | Multi-wavelength single span transmission method and system |
| CN105262540B (en) * | 2015-07-24 | 2019-03-15 | 国家电网公司 | Multi-wavelength single span section transmission method and system |
| CN105258781B (en) * | 2015-09-24 | 2018-11-16 | 中国石油天然气股份有限公司 | A kind of fiber-optic vibration detection system and fiber-optic vibration detection method |
| CN105258781A (en) * | 2015-09-24 | 2016-01-20 | 中国石油天然气股份有限公司 | Optical fiber vibration detection system and optical fiber vibration detection method |
| CN109075864A (en) * | 2016-04-15 | 2018-12-21 | 骁阳网络有限公司 | Via the ROPA in the same direction for the separation optical fiber supply power for transmitting data in opposite direction |
| CN105910550A (en) * | 2016-06-24 | 2016-08-31 | 桂林创研科技有限公司 | Distributed optical fiber Bragg grating demodulation system |
| CN107171729A (en) * | 2017-07-20 | 2017-09-15 | 无锡市德科立光电子技术有限公司 | Repeatless transmission system with compound shared pumping source |
| CN109120370A (en) * | 2018-07-27 | 2019-01-01 | 武汉光迅科技股份有限公司 | A kind of DWDM remotely pumping system that OSNR can be improved |
| US11265098B2 (en) | 2018-07-27 | 2022-03-01 | Accelink Technologies Co., Ltd. | DWDM remote pumping system capable of improving OSNR |
| CN112838893A (en) * | 2020-12-22 | 2021-05-25 | 武汉光迅科技股份有限公司 | Remote pump system, in-station pumping unit and method for automatically positioning fault of remote pump system |
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Granted publication date: 20080102 |