CN205282872U - Controllable single channel erbium doped fiber amplifier of power - Google Patents
Controllable single channel erbium doped fiber amplifier of power Download PDFInfo
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- CN205282872U CN205282872U CN201521130762.XU CN201521130762U CN205282872U CN 205282872 U CN205282872 U CN 205282872U CN 201521130762 U CN201521130762 U CN 201521130762U CN 205282872 U CN205282872 U CN 205282872U
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Abstract
The utility model provides a controllable single channel erbium doped fiber amplifier of power belongs to the fiber communication field, including optical coupler, pump light source, optical detector, power controller, an optical isolator, er -doped fiber, the 2nd optical isolator, dispersion compensator and optical filter, the input light signal gets into the er -doped fiber through an optical coupler and an optical isolator, optical detector detects termination input light signal, optical detector's output termination power controller, power controller meets optical coupler through the pump light source, er -doped fibre output is through the 2nd optical isolator, dispersion compensator and optical filter to output light signal, use the loss circumstances of optical detector test input light signal, pass to power controller detecting data, further control the pumping light source by power controller, the problem of current erbium doped fiber amplifier output intelligent control is solved.
Description
Technical field
The utility model relates to a kind of fiber amplifier, particularly relates 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 transport propertys affecting maximum repeater span are the loss on optical fiber circuit and dispersion; In order to ensure the reliability of transmission quality on long-distance optical cable backbone, it is necessary to fiber amplifier is set up in online suitably position. Fiber amplifier conventional at present has erbium-doped fiber amplifier and Raman distributed amplifier.
Erbium-doped fiber amplifier is a kind of active optical component amplified by flashlight, has become the key equipment in opticfiber communication cable. Erbium-doped fiber amplifier can the decay that causes at long range propagation and partial wave of effective compensation flashlight, promoted the development of opticfiber communication cable 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 transmission loss. But intelligent control output rating can not be carried out according to active loss in a lot of erbium-doped fiber amplifiers, power controllable operating could not be realized.
Practical novel content
The single channel erbium-doped fiber amplifier that the utility model provides a kind of power controlled, solves the problem of existing erbium-doped fiber amplifier output rating intelligent control.
The utility model solves the problem by the following technical programs:
The single channel erbium-doped fiber amplifier that power is controlled, comprises opticcoupler, pump light source, photodetector, power controller, the first optoisolator, Er-doped fiber, the 2nd optoisolator, dispersion compensator and optical filter;
Input optical signal enters Er-doped fiber through opticcoupler and the first optoisolator; Photodetector detection termination input optical signal; The output termination power controller of photodetector; Power controller connects opticcoupler through pump light source; Er-doped fiber output terminal through the 2nd optoisolator, dispersion compensator and optical filter to output optical signal.
Preferably, having 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 output rating is 10-120mW.
Preferably, described opticcoupler adopts wavelength division multiplexer.
Advantage of the present utility model and effect be:
The single channel erbium-doped fiber amplifier that the utility model provides a kind of power controlled, use the loss situation of photodetector detection input optical signal, detection data are passed to power controller, controlling 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 output rating intelligent control.
Accompanying drawing explanation
Fig. 1 is the utility model structural representation.
Embodiment
Below in conjunction with embodiment, the utility model is described in further detail.
The single channel erbium-doped fiber amplifier that power is controlled, as shown in Figure 1, comprises opticcoupler, pump light source, photodetector, power controller, the first optoisolator, Er-doped fiber, the 2nd optoisolator, dispersion compensator and optical filter;
Input optical signal enters Er-doped fiber through opticcoupler and the first optoisolator; Photodetector detection termination input optical signal; The output termination power controller of photodetector; Power controller connects opticcoupler through pump light source; Er-doped fiber output terminal through the 2nd optoisolator, dispersion compensator and optical filter to output optical signal.
Input optical signal enters the light wave that opticcoupler sends with pump light source and is coupled, and wherein, the light wave power size that pump light source sends is controlled by power controller; The control signal of power controller detects what input optical signal was determined further by photodetector, forms good close-loop power control, makes erbium-doped fiber amplifier have power intelligent controlling functions.
Having 2 ion implantation points in Er-doped fiber, 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 optical signal be amplified.
What Er-doped fiber intermediate ion injected some injection 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 output rating is 10-120mW, and operation wavelength is 1.5 nanometers, can better reach gain height, the effect that noise is little.
Opticcoupler is the Passive Optical Components mixed by the light wave that input optical signal and pump light source export, and adopts wavelength division multiplexer.
Er-doped fiber is a segment length is the quartz optical fiber of 10-200 rice, for optical signal amplification, is the important devices realizing optical signal amplifier.
Reflected light from affecting the job stability of amplifier for preventing for first optoisolator and the 2nd optoisolator, ensures that optical signal can only the device of forward transmitted.
The effect of optical filter is the noise of filtering image intensifer, reduces noise to the impact of amplifier, it is to increase the signal to noise ratio of opticfiber communication cable.
Dispersion compensator is mainly used in compensated optical signal and weakens part due to dispersion, it is to increase the quality of Signal transmissions.
Photodetector is photorectifier, and optical signal is transferred to electrical signal, and electrical signal is passed to power controller, can better form detection control.
The single channel erbium-doped fiber amplifier that the utility model provides a kind of power controlled, use the loss situation of photodetector detection input optical signal, detection data are passed to power controller, controlling 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 output rating intelligent control.
Below the better embodiment that the utility model is created has been carried out concrete explanation, but the utility model is not limited to embodiment, those of ordinary skill in the art also can make all equivalent modification or replacement under the prerequisite not running counter to the utility model creative 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 a power is controlled, it is characterised in that: comprise opticcoupler, pump light source, photodetector, power controller, the first optoisolator, Er-doped fiber, the 2nd optoisolator, dispersion compensator and optical filter;
Input optical signal enters Er-doped fiber through opticcoupler and the first optoisolator; Photodetector detection termination input optical signal; The output termination power controller of photodetector; Power controller connects opticcoupler through pump light source; Er-doped fiber output terminal through the 2nd optoisolator, 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, it is characterised in that: having 2 ion implantation points in described Er-doped fiber, 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, it is characterised 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, it is characterised in that: described pump light source is semiconductor laser, and output rating is 10-120mW.
5. the single channel erbium-doped fiber amplifier that a kind of power according to claim 1 is controlled, it is characterised in that: described opticcoupler adopts wavelength division multiplexer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201521130762.XU CN205282872U (en) | 2015-12-30 | 2015-12-30 | Controllable single channel erbium doped fiber amplifier of power |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201521130762.XU CN205282872U (en) | 2015-12-30 | 2015-12-30 | Controllable single channel erbium doped fiber amplifier of power |
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| CN205282872U true CN205282872U (en) | 2016-06-01 |
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| CN201521130762.XU Active CN205282872U (en) | 2015-12-30 | 2015-12-30 | Controllable single channel erbium doped fiber amplifier of power |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108834005A (en) * | 2018-07-23 | 2018-11-16 | 中天宽带技术有限公司 | A kind of passive optical fiber network system and its control method of power adjustable |
| CN108900252A (en) * | 2018-07-23 | 2018-11-27 | 中天宽带技术有限公司 | A kind of optical network unit and passive optical-fiber network of power adjustable |
| CN109040866A (en) * | 2018-07-23 | 2018-12-18 | 中天宽带技术有限公司 | A kind of the optical network unit terminal and its control method of power adjustable |
-
2015
- 2015-12-30 CN CN201521130762.XU patent/CN205282872U/en active Active
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108834005A (en) * | 2018-07-23 | 2018-11-16 | 中天宽带技术有限公司 | A kind of passive optical fiber network system and its control method of power adjustable |
| CN108900252A (en) * | 2018-07-23 | 2018-11-27 | 中天宽带技术有限公司 | A kind of optical network unit and passive optical-fiber network of power adjustable |
| CN109040866A (en) * | 2018-07-23 | 2018-12-18 | 中天宽带技术有限公司 | A kind of the optical network unit terminal and its control method of power adjustable |
| CN108900252B (en) * | 2018-07-23 | 2021-04-06 | 中天宽带技术有限公司 | Power-adjustable optical network unit and passive optical network |
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| TR01 | Transfer of patent right |
Effective date of registration: 20181105 Address after: Room C306, 3rd floor, Building A, Information Incubation Building, D-12, Information Industry Park, Qixing District, Guilin City, Guangxi Zhuang Autonomous Region, 541004 Patentee after: GUILIN TRYIN TECHNOLOGY CO., LTD. Address before: 541004 Information Incubation Building, Block A, C306, Information Industry Park D-12, Chaoyang Road High-tech Zone, Guilin City, Guangxi Zhuang Autonomous Region Patentee before: GUILIN HANSHI TECHNOLOGY CO., LTD. |