CN105514784A - Power-controllable single-channel erbium-doped fiber amplifier - Google Patents
Power-controllable single-channel erbium-doped fiber amplifier Download PDFInfo
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- CN105514784A CN105514784A CN201511020271.4A CN201511020271A CN105514784A CN 105514784 A CN105514784 A CN 105514784A CN 201511020271 A CN201511020271 A CN 201511020271A CN 105514784 A CN105514784 A CN 105514784A
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- doped fiber
- optical
- erbium
- power
- fiber amplifier
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- 239000000835 fiber Substances 0.000 title claims abstract description 55
- 230000003287 optical effect Effects 0.000 claims abstract description 68
- 239000006185 dispersion Substances 0.000 claims abstract description 11
- 229910052691 Erbium Inorganic materials 0.000 claims description 5
- 238000005468 ion implantation Methods 0.000 claims description 5
- 239000004065 semiconductor Substances 0.000 claims description 3
- 238000001514 detection method Methods 0.000 abstract description 4
- 238000004891 communication Methods 0.000 abstract description 2
- 230000000694 effects Effects 0.000 description 4
- 239000013307 optical fiber Substances 0.000 description 4
- 230000005540 biological transmission Effects 0.000 description 3
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 240000007594 Oryza sativa Species 0.000 description 1
- 235000007164 Oryza sativa Nutrition 0.000 description 1
- 238000001069 Raman spectroscopy Methods 0.000 description 1
- 230000003321 amplification Effects 0.000 description 1
- 230000005284 excitation Effects 0.000 description 1
- 238000001914 filtration Methods 0.000 description 1
- 238000003199 nucleic acid amplification method Methods 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 239000010453 quartz Substances 0.000 description 1
- 230000005855 radiation Effects 0.000 description 1
- 235000009566 rice Nutrition 0.000 description 1
- 230000008054 signal transmission Effects 0.000 description 1
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N silicon dioxide Inorganic materials O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 1
- 230000007704 transition Effects 0.000 description 1
Classifications
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01S—DEVICES USING THE PROCESS OF LIGHT AMPLIFICATION BY STIMULATED EMISSION OF RADIATION [LASER] TO AMPLIFY OR GENERATE LIGHT; DEVICES USING STIMULATED EMISSION OF ELECTROMAGNETIC RADIATION IN WAVE RANGES OTHER THAN OPTICAL
- H01S3/00—Lasers, i.e. devices using stimulated emission of electromagnetic radiation in the infrared, visible or ultraviolet wave range
- H01S3/10—Controlling the intensity, frequency, phase, polarisation or direction of the emitted radiation, e.g. switching, gating, modulating or demodulating
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- G—PHYSICS
- G02—OPTICS
- G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
- G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
- G02F1/35—Non-linear optics
- G02F1/39—Non-linear optics for parametric generation or amplification of light, infrared or ultraviolet waves
- G02F1/395—Non-linear optics for parametric generation or amplification of light, infrared or ultraviolet waves in optical waveguides
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01S—DEVICES USING THE PROCESS OF LIGHT AMPLIFICATION BY STIMULATED EMISSION OF RADIATION [LASER] TO AMPLIFY OR GENERATE LIGHT; DEVICES USING STIMULATED EMISSION OF ELECTROMAGNETIC RADIATION IN WAVE RANGES OTHER THAN OPTICAL
- H01S3/00—Lasers, i.e. devices using stimulated emission of electromagnetic radiation in the infrared, visible or ultraviolet wave range
- H01S3/05—Construction or shape of optical resonators; Accommodation of active medium therein; Shape of active medium
- H01S3/06—Construction or shape of active medium
- H01S3/063—Waveguide lasers, i.e. whereby the dimensions of the waveguide are of the order of the light wavelength
- H01S3/067—Fibre lasers
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01S—DEVICES USING THE PROCESS OF LIGHT AMPLIFICATION BY STIMULATED EMISSION OF RADIATION [LASER] TO AMPLIFY OR GENERATE LIGHT; DEVICES USING STIMULATED EMISSION OF ELECTROMAGNETIC RADIATION IN WAVE RANGES OTHER THAN OPTICAL
- H01S3/00—Lasers, i.e. devices using stimulated emission of electromagnetic radiation in the infrared, visible or ultraviolet wave range
- H01S3/09—Processes or apparatus for excitation, e.g. pumping
- H01S3/091—Processes or apparatus for excitation, e.g. pumping using optical pumping
- H01S3/094—Processes or apparatus for excitation, e.g. pumping using optical pumping by coherent light
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01S—DEVICES USING THE PROCESS OF LIGHT AMPLIFICATION BY STIMULATED EMISSION OF RADIATION [LASER] TO AMPLIFY OR GENERATE LIGHT; DEVICES USING STIMULATED EMISSION OF ELECTROMAGNETIC RADIATION IN WAVE RANGES OTHER THAN OPTICAL
- H01S3/00—Lasers, i.e. devices using stimulated emission of electromagnetic radiation in the infrared, visible or ultraviolet wave range
- H01S3/10—Controlling the intensity, frequency, phase, polarisation or direction of the emitted radiation, e.g. switching, gating, modulating or demodulating
- H01S3/102—Controlling the intensity, frequency, phase, polarisation or direction of the emitted radiation, e.g. switching, gating, modulating or demodulating by controlling the active medium, e.g. by controlling the processes or apparatus for excitation
Abstract
The invention provides a power-controllable single-channel erbium-doped fiber amplifier and belongs to the field of fiber communication. The power-controllable single-channel erbium-doped fiber amplifier comprises an optical coupler, a pump light source, an optical detector, a power controller, a first optical isolator, an erbium-doped fiber, a second optical isolator, a dispersion compensation, and an light filter. An input optical signal enters the erbium-doped fiber via the optical coupler and the first optical isolator. The detection end of the optical detector is connected with the input optical signal. The output end of the optical detector is connected with the power controller. The power controller is connected with the optical coupler via the pump light source. The output end of the erbium-doped fiber is connected with an output optical signal via the second optical isolator, the dispersion compensation, and the light filter. The optical detector detects the loss of the input optical signal and transmits detected data to the power controller. The power controller further controls the pump light source. The intelligent control of the output power of a conventional erbium-doped fiber amplifier is solved.
Description
Technical field
The present invention relates to a kind of fiber amplifier, particularly relate to the single channel erbium-doped fiber amplifier that a kind of power is controlled.
Background technology
In fiber optic communication systems, two the important transmission characteristics of repeater span of having the greatest impact are loss on fibre circuit and dispersion; In order to ensure the reliability of transmission quality on toll cable main line, online appropriate location is just needed to set up fiber amplifier.The fiber amplifier of current routine has erbium-doped fiber amplifier and Raman distributed amplifier.
Erbium-doped fiber amplifier is a kind of active optical component amplified flashlight, has become the key equipment in optical fiber telecommunications system.Erbium-doped fiber amplifier can the decay that causes at long range propagation and partial wave of effective compensation flashlight, has promoted the development of optical fiber telecommunications system greatly.
What the different use of current best performance was maximum is erbium-doped fiber amplifier.The pump laser minimum power that erbium-doped fiber amplifier uses is general all at more than 80mW, and the gain that therefore erbium-doped fiber amplifier provides often can meet loss.But Based Intelligent Control power output can not be carried out according to active loss in a lot of erbium-doped fiber amplifiers, power controllable operating could not be realized.
Summary of the invention
The invention provides the single channel erbium-doped fiber amplifier that a kind of power is controlled, solve the problem of existing erbium-doped fiber amplifier power output Based Intelligent Control.
The present invention solves the problem by the following technical programs:
The single channel erbium-doped fiber amplifier that power is controlled, comprises optical coupler, pump light source, photodetector, power controller, the first optical isolator, Er-doped fiber, the second optical isolator, dispersion compensator and optical filter;
Input optical signal enters Er-doped fiber through optical coupler and the first optical isolator; Photodetector detects termination input optical signal; The output termination power controller of photodetector; Power controller connects optical coupler through pump light source; Er-doped fiber output through the second optical isolator, dispersion compensator and optical filter to output optical signal.
Preferably, have 2 ion implantation points in described Er-doped fiber, Er-doped fiber is divided into three sections by these 2.
Preferably, what described ion implantation point injected is erbium ion, and concentration is 30nm/kg.
Preferably, described pump light source is semiconductor laser, and power output is 10-120mW.
Preferably, described optical coupler adopts wavelength division multiplexer.
Advantage of the present invention and effect are:
The invention provides the single channel erbium-doped fiber amplifier that a kind of power is controlled, photodetector is used to detect the loss situation of input optical signal, detection data are passed to power controller, and control pump light source further by power controller, pump light source sends the light wave of different capacity according to control signal; Solve the problem of existing erbium-doped fiber amplifier power output Based Intelligent Control.
Accompanying drawing explanation
Fig. 1 is structural representation of the present invention.
Embodiment
Below in conjunction with embodiment, the invention will be further described.
The single channel erbium-doped fiber amplifier that power is controlled, as shown in Figure 1, comprises optical coupler, pump light source, photodetector, power controller, the first optical isolator, Er-doped fiber, the second optical isolator, dispersion compensator and optical filter;
Input optical signal enters Er-doped fiber through optical coupler and the first optical isolator; Photodetector detects termination input optical signal; The output termination power controller of photodetector; Power controller connects optical coupler through pump light source; Er-doped fiber output through the second optical isolator, dispersion compensator and optical filter to output optical signal.
Input optical signal enters optical coupler and is coupled with the light wave that pump light source sends, and wherein, the light wave watt level that pump light source sends is controlled by power controller; The control signal of power controller is detected by photodetector that input optical signal determines further, forms good close-loop power control, makes erbium-doped fiber amplifier have power intelligent controlling functions.
In Er-doped fiber, have 2 ion implantation points, Er-doped fiber is divided into three sections by these 2, pump light source effect under, occurred in Er-doped fiber particle reversion distribution, create stimulated radiation, thus light signal be amplified.
What Er-doped fiber intermediate ion decanting point injected is erbium ion, concentration is 30nm/kg, and erbium ion, when not by any excitation, is in low-lying level, when the laser of pump light source constantly excites Er-doped fiber, the erbium ion being in low-lying level obtains energy will to high level transition.
Pump light source is semiconductor laser, and power output is 10-120mW, and operation wavelength is 1.5 nanometers, can better reach gain high, the effect that noise is little.
Optical coupler is the Passive Optical Components mixed by the light wave that input optical signal and pump light source export, and adopts wavelength division multiplexer.
The quartz optical fiber of Er-doped fiber to be a segment length be 10-200 rice, for optical signal amplification, is the important devices realizing optical signal amplifier.
First optical isolator and the job stability of the second optical isolator for preventing reverberation from affecting amplifier, ensure light signal can only forward transmission device.
The effect of optical filter is the noise of filtering image intensifer, reduces noise to the impact of amplifier, improves the signal to noise ratio of optical fiber telecommunications system.
Dispersion compensator is mainly used in compensated optical signal and weakens part due to dispersion, improves the quality of Signal transmissions.
Photodetector is photodiode, and light signal is transferred to the signal of telecommunication, and the signal of telecommunication is passed to power controller, can better form detection control.
The invention provides the single channel erbium-doped fiber amplifier that a kind of power is controlled, photodetector is used to detect the loss situation of input optical signal, detection data are passed to power controller, and control pump light source further by power controller, pump light source sends the light wave of different capacity according to control signal; Solve the problem of existing erbium-doped fiber amplifier power output Based Intelligent Control.
Below the preferred embodiment of the invention is illustrated, but the present invention is not limited to embodiment, those of ordinary skill in the art also can make all equivalent modification or replacement under the prerequisite without prejudice to the invention spirit, and these equivalent modification or replacement are all included in the scope of the application.
Claims (5)
1. the single channel erbium-doped fiber amplifier that power is controlled, is characterized in that: comprise optical coupler, pump light source, photodetector, power controller, the first optical isolator, Er-doped fiber, the second optical isolator, dispersion compensator and optical filter;
Input optical signal enters Er-doped fiber through optical coupler and the first optical isolator; Photodetector detects termination input optical signal; The output termination power controller of photodetector; Power controller connects optical coupler through pump light source; Er-doped fiber output through the second optical isolator, dispersion compensator and optical filter to output optical signal.
2. the single channel erbium-doped fiber amplifier that a kind of power according to claim 1 is controlled, is characterized in that: have 2 ion implantation points in described Er-doped fiber, and Er-doped fiber is divided into three sections by these 2.
3. the single channel erbium-doped fiber amplifier that a kind of power according to claim 2 is controlled, is characterized in that: what described ion implantation point injected is erbium ion, and concentration is 30nm/kg.
4. the single channel erbium-doped fiber amplifier that a kind of power according to claim 1 is controlled, is characterized in that: described pump light source is semiconductor laser, and power output is 10-120mW.
5. the single channel erbium-doped fiber amplifier that a kind of power according to claim 1 is controlled, is characterized in that: described optical coupler adopts wavelength division multiplexer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201511020271.4A CN105514784A (en) | 2015-12-30 | 2015-12-30 | Power-controllable single-channel erbium-doped fiber amplifier |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201511020271.4A CN105514784A (en) | 2015-12-30 | 2015-12-30 | Power-controllable single-channel erbium-doped fiber amplifier |
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| Publication Number | Publication Date |
|---|---|
| CN105514784A true CN105514784A (en) | 2016-04-20 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
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| CN201511020271.4A Pending CN105514784A (en) | 2015-12-30 | 2015-12-30 | Power-controllable single-channel erbium-doped fiber amplifier |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111404612A (en) * | 2020-03-25 | 2020-07-10 | 武汉光谷信息光电子创新中心有限公司 | Optical signal amplifying device and transmission system |
| CN112730254A (en) * | 2020-12-30 | 2021-04-30 | 深圳市利拓光电有限公司 | Multipoint distributed laser methane detection system |
| CN113029997A (en) * | 2021-04-27 | 2021-06-25 | 深圳市利拓光电有限公司 | Methane concentration detection system and method |
| CN113851915A (en) * | 2021-09-24 | 2021-12-28 | 上海拜安实业有限公司 | Optical fiber amplifier device for realizing two-way bidirectional full independence |
Citations (6)
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|---|---|---|---|---|
| CN1257216A (en) * | 1998-10-07 | 2000-06-21 | 三星电子株式会社 | Wave division multiuse erbium-doped optical fiber amplifier having constant power output in each channel and amplifying method |
| CN1874193A (en) * | 2005-06-03 | 2006-12-06 | 华为技术有限公司 | Method for implementing laser safeguard protection, and method for loading optical amplifier and id signal |
| CN101494499A (en) * | 2009-01-08 | 2009-07-29 | 上海交通大学 | Erbium-doped fiber amplifier of fiber-optical cable television network |
| CN102361468A (en) * | 2011-09-13 | 2012-02-22 | 武汉光迅科技股份有限公司 | Pumping control method of erbium-doped fiber amplifier (EDFA) |
| CN202268892U (en) * | 2011-10-22 | 2012-06-06 | 杭州通兴电子有限公司 | Dispersion compensator insertion type erbium-doped optical fiber amplifier |
| CN103607243A (en) * | 2013-09-30 | 2014-02-26 | 武汉光迅科技股份有限公司 | Method and device for mode-indiscriminate feedforward control |
-
2015
- 2015-12-30 CN CN201511020271.4A patent/CN105514784A/en active Pending
Patent Citations (6)
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| CN1257216A (en) * | 1998-10-07 | 2000-06-21 | 三星电子株式会社 | Wave division multiuse erbium-doped optical fiber amplifier having constant power output in each channel and amplifying method |
| CN1874193A (en) * | 2005-06-03 | 2006-12-06 | 华为技术有限公司 | Method for implementing laser safeguard protection, and method for loading optical amplifier and id signal |
| CN101494499A (en) * | 2009-01-08 | 2009-07-29 | 上海交通大学 | Erbium-doped fiber amplifier of fiber-optical cable television network |
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Non-Patent Citations (1)
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111404612A (en) * | 2020-03-25 | 2020-07-10 | 武汉光谷信息光电子创新中心有限公司 | Optical signal amplifying device and transmission system |
| CN111404612B (en) * | 2020-03-25 | 2021-05-11 | 武汉光谷信息光电子创新中心有限公司 | Optical signal amplifying device and transmission system |
| CN112730254A (en) * | 2020-12-30 | 2021-04-30 | 深圳市利拓光电有限公司 | Multipoint distributed laser methane detection system |
| CN113029997A (en) * | 2021-04-27 | 2021-06-25 | 深圳市利拓光电有限公司 | Methane concentration detection system and method |
| CN113851915A (en) * | 2021-09-24 | 2021-12-28 | 上海拜安实业有限公司 | Optical fiber amplifier device for realizing two-way bidirectional full independence |
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Application publication date: 20160420 |