CN201716501U - Novel optical amplifier with bi-direction pumping structure - Google Patents
Novel optical amplifier with bi-direction pumping structure Download PDFInfo
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- CN201716501U CN201716501U CN2010202179403U CN201020217940U CN201716501U CN 201716501 U CN201716501 U CN 201716501U CN 2010202179403 U CN2010202179403 U CN 2010202179403U CN 201020217940 U CN201020217940 U CN 201020217940U CN 201716501 U CN201716501 U CN 201716501U
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Abstract
The utility model provides a novel optical amplifier with a bi-direction pumping structure. The optical amplifier comprises a primary amplification optical path, a secondary amplification optical path and a pumping optical source, wherein the primary amplification optical path and the secondary amplification optical path are connected through a passive device; light beam emitted by the pumping optical source is divided into first pumping light and second pumping light through a first optical splitter; the first pumping light pumps the primary amplification optical path forward; and the second pumping light pumps the secondary amplification optical path backward. The optical amplifier is characterized in that third pumping light is separated from the first or the second pumping light and pumps the secondary amplification optical path forward. The utility model enables pumping light not absorbed sufficiently to be reused by means of a second optical splitter or optical fiber, so that the secondary amplification optical path can be stimulated to obtain higher gain and lower noise, and the defect of large power consumption of the traditional bi-direction pumping manner is overcome.
Description
Technical field
The utility model relates to a kind of image intensifer, a kind of especially image intensifer that makes full use of pump light source.
Background technology
Erbium-Doped Fiber Amplifier (EDFA) is called for short EDFA, be Erbium-Dopped Fiber Amplifier, be a kind of be medium with Er-doped fiber EDF, with the pump light is the image intensifer of driving source, it is as the critical component of optical communication system of new generation, have gain height, big, the work optical bandwidth broad of output power, with polarization irrelevant, noise figure lower, amplification characteristic and advantages such as systematic bits rate and data layout have nothing to do.According to the different requirements of system to gain, output power and noise figure, Erbium-Doped Fiber Amplifier (EDFA) can be divided into power amplifier, line amplifier or prime amplifier, be positioned over the diverse location of system respectively.
Adopt the Erbium-Doped Fiber Amplifier (EDFA) of forward pumping to have lower noise figure, therefore system's more this kind of employing structure is because prime amplifier, in order to make Erbium-Doped Fiber Amplifier (EDFA) have the characteristics of low noise and high saturated output simultaneously, adopt the structure of two directional pump mostly, as shown in Figure 1, the independent direction pumping configuration of less use in the design of present Erbium-Doped Fiber Amplifier (EDFA), but the image intensifer of the two directional pump structure of prior art has the big defective of power consumption.
Summary of the invention
In order to address the above problem, the utility model provides a kind of height that gains, noise is low, the pumping power consumption is little image intensifer.
To achieve these goals, the utility model provides a kind of image intensifer of novel two directional pump structure, amplify light path by the first order, light path is amplified in the second level, connect the first order by a passive device and amplify light path and second level amplification light path, an and pump light source, the pump light source emitted light beams is separated into first pump light and second pump light via first optical splitter, the first pump light forward pumping first order is amplified light path, light path is amplified in the second pump light backward pumping second level, it is characterized in that: described first or second pump light is isolated the 3rd pump light forward pumping second level and is amplified light path.
Wherein, preferred version is: the light path of described first pump light is provided with one second optical splitter and isolates the 3rd pump light forward pumping second level amplification light path.
Wherein, preferred version is: the light path of described second pump light is provided with one second optical splitter and isolates the 3rd pump light forward pumping second amplification light path.
Wherein, preferred version is: the light path of described first pump light is provided with an optical fiber and isolates the 3rd pump light forward pumping second amplification light path.
The advantage that the utlity model has like this: because the utility model is owing to utilize the pump light that is not fully absorbed again by second optical splitter or optical fiber, excitation second level light amplification light path has overcome traditional double to the big shortcoming of pump mode power consumption to obtain higher gain and lower noise.
Description of drawings
Below in conjunction with drawings and Examples structure of the present utility model is further specified.
Fig. 1 is the structure principle chart of first embodiment of the image intensifer of a kind of novel two directional pump structure of the utility model.
Fig. 2 is the structure principle chart of second embodiment of the image intensifer of a kind of novel two directional pump structure of the utility model.
Fig. 3 is the structure principle chart of the 3rd embodiment of the image intensifer of a kind of novel two directional pump structure of the utility model.
Embodiment
Embodiment to the image intensifer of a kind of novel two directional pump structure of the utility model further specifies below in conjunction with accompanying drawing.
Fig. 1 is the structural drawing of first embodiment of the image intensifer of a kind of novel two directional pump structure of the utility model.As shown in Figure 1: the image intensifer 10 of the utility model two directional pump structure comprises first order amplification light path 11, light path 12 and the passive device 13 between first order amplification light path 11 and second level amplification light path 12 are amplified in the second level, also comprise a pump light source 14, pump light source 14 emitted light beams L are separated into the first pump light L1 and the second pump light L2 via first optical splitter 15, the first pump light L1 amplifies light path 11 by first wavelength division multiplexer, the 171 forward pumping first order, the second pump light L2 oppositely amplifies light path 12 by the 3rd wavelength division multiplexer 173 pumping second level, wherein, the described first pump light L1 isolates the 3rd pump light L3 by second wavelength division multiplexer, 172 forward pumping second level amplification light path 12 by second optical splitter 16.
The light path principle of present embodiment is: after signal beams A and first pump light L1 input are amplified light path 11 amplifications through first wavelength division multiplexer, the 171 coupling input first order, 13 back inputs enter second level amplification light path 12 to signal beams A through passive device, the first pump light L1 isolates the 3rd pump light L 3 by second wavelength division multiplexer, 172 coupling forward input pumpings, the second amplification light path 12 by second optical splitter 16, and the second pump light L2 that separates by first optical splitter 15 exports by described the 3rd wavelength division multiplexer 16 by the 3rd wavelength division multiplexer 173 reverse inputs second amplification light path 12 pumpings amplification back and signal beams A.
Fig. 2 is the structural drawing of second embodiment of the image intensifer of the utility model two directional pump structure.As shown in Figure 2: the image intensifer 20 of the utility model two directional pump structure comprises first order amplification light path 21, light path 22 and the passive device 23 between first order amplification light path 21 and second level amplification light path 22 are amplified in the second level, also comprise a pump light source 24, pump light source 24 emitted light beams L are separated into the first pump light L1 and the second pump light L2 via first optical splitter 25, the first pump light L1 signal beams A amplifies light path 21 by first wavelength division multiplexer, the 271 coupling forward pumping first order, the second pump light L2 amplifies light path 22 by the 3rd wavelength division multiplexer 273 coupling backward pumping second level, wherein, the described second pump light L2 isolates the 3rd pump light L3 by second wavelength division multiplexer, 272 forward pumping second level amplification light path 12 by second optical splitter 26.
The light path principle of present embodiment is: after the signal beams A and the first pump light L1 amplify light path 21 amplifications by 271 inputs of first wavelength division multiplexer through the first order, signal beams A enters the second level through the input of passive device 23 back and amplifies light path 22, the second pump light L2 and utilize the 3rd wavelength division multiplexer 273 coupling backward pumping second level to amplify light paths 22. second pump light L2 to isolate the 3rd pump light L3 by second optical splitter 26 and amplify back output by the 272 coupling pumpings of second wavelength division multiplexer.
Fig. 3 is the structural drawing of the 3rd embodiment of the image intensifer of the utility model two directional pump structure.As shown in Figure 3: the image intensifer 30 of the utility model two directional pump structure comprises first order amplification light path 31, light path 32 and the passive device 33 between first order amplification light path 31 and second level amplification light path 32 are amplified in the second level, also comprise a pump light source 34, pump light source 34 emitted light beams L are separated into the first pump light L1 and the second pump light L2 via first optical splitter 35, the first pump light L1 and signal beams A amplify light path 31 by first wavelength division multiplexer, the 371 coupling forward pumping first order, the second pump light L2 amplifies light path 32 by the 4th wavelength division multiplexer 374 backward pumping second level, wherein, the described first pump light L1 isolates the 3rd pump light L3 by the 3rd wavelength division multiplexer 373 forward pumping second level amplification light path 32 by second wavelength division multiplexer 372 and optical fiber 36.
The light path principle of present embodiment is: after the signal beams A and the first pump light L1 amplify light path 31 amplifications by 371 inputs of first wavelength division multiplexer through the first order, 33 back inputs enter second level amplification light path 32 to signal beams A through passive device, the second pump light L2 utilizes the 4th wavelength division multiplexer 374 reverse input second level to amplify and isolates the 3rd pump light L3 by the 3rd wavelength division multiplexer 373 forward pumping second level amplification light path 32 by second wavelength division multiplexer 372 and optical fiber 36 after light path 32, the first pump light L1 amplify light path 31 by the first order.
The advantage that the utlity model has like this: because the utility model is owing to utilize the pump light that is not fully absorbed again by second optical splitter or optical fiber, excitation second level light amplification light path has overcome traditional double to the big shortcoming of pump mode power consumption to obtain higher gain and lower noise.
The above person is the utility model most preferred embodiment only, is not to be used to limit scope of the present utility model, and all equivalences of being done according to the utility model claim change or modify, and are all the utility model and contain.
Claims (4)
1. the image intensifer of a novel two directional pump structure, amplify light path, second level amplification light path by the first order, connect the first order by a passive device and amplify light path and second level amplification light path, an and pump light source, the pump light source emitted light beams is separated into first pump light and second pump light via first optical splitter, the first pump light forward pumping first order is amplified light path, light path is amplified in the second pump light backward pumping second level, it is characterized in that: described first or second pump light is isolated the 3rd pump light forward pumping second level and is amplified light path.
2. the image intensifer of novel two directional pump structure as claimed in claim 1 is characterized in that: the light path of described first pump light is provided with one second optical splitter and isolates the 3rd pump light forward pumping second level amplification light path.
3. the image intensifer of novel two directional pump structure as claimed in claim 1 is characterized in that: the light path of described second pump light is provided with one second optical splitter and isolates the 3rd pump light forward pumping second amplification light path.
4. the image intensifer of novel two directional pump structure as claimed in claim 1 is characterized in that: the light path of described first pump light is provided with an optical fiber and isolates the 3rd pump light forward pumping second amplification light path.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010202179403U CN201716501U (en) | 2010-06-07 | 2010-06-07 | Novel optical amplifier with bi-direction pumping structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010202179403U CN201716501U (en) | 2010-06-07 | 2010-06-07 | Novel optical amplifier with bi-direction pumping structure |
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| CN201716501U true CN201716501U (en) | 2011-01-19 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN2010202179403U Expired - Fee Related CN201716501U (en) | 2010-06-07 | 2010-06-07 | Novel optical amplifier with bi-direction pumping structure |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104319607A (en) * | 2014-11-14 | 2015-01-28 | 武汉理工光科股份有限公司 | Laser light source based on two-stage amplification of Er-doped fibers |
-
2010
- 2010-06-07 CN CN2010202179403U patent/CN201716501U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104319607A (en) * | 2014-11-14 | 2015-01-28 | 武汉理工光科股份有限公司 | Laser light source based on two-stage amplification of Er-doped fibers |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20110119 Termination date: 20190607 |