CN217281618U - Power-balanced multi-wavelength optical fiber amplifier - Google Patents
Power-balanced multi-wavelength optical fiber amplifier Download PDFInfo
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- CN217281618U CN217281618U CN202220364214.7U CN202220364214U CN217281618U CN 217281618 U CN217281618 U CN 217281618U CN 202220364214 U CN202220364214 U CN 202220364214U CN 217281618 U CN217281618 U CN 217281618U
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Abstract
The utility model provides a power-balanced multi-wavelength optical fiber amplifier, which comprises a first wavelength division multiplexer, a multi-wavelength optical splitter, a multi-wavelength variable optical attenuator, a second wavelength division multiplexer, a coupler, erbium-doped optical fibers, a multi-wavelength flat filter and a second isolator which are sequentially connected with a broadband filter; the second output end of the multi-wave optical splitter is connected to a multi-wave photoelectric detector, and the multi-wave photoelectric detector is connected to the control module; the first output end of the control module is connected to the multi-wave variable optical attenuator, and the second output end of the control module is connected to the pump laser; the pump laser is connected to a coupler. The utility model discloses an optical fiber amplifier carries out the balanced back of power that becomes more meticulous to the many ripples optical signal of input, reunion many ripples flat filter for whole optical signal power is very flat, thereby optimizes the network performance.
Description
Technical Field
The utility model belongs to the technical field of optical fiber amplifier, in particular to multi-wavelength optical fiber amplifier of balanced type of power.
Background
The erbium-doped fiber amplifier has the advantages of high gain, large bandwidth, low noise, insensitivity of gain characteristic to light polarization state, transparency to data rate and format, negligible channel cross talk in a multipath system and the like. Meanwhile, in a multi-wave network, erbium-doped fiber amplifiers are often required to be used in a cascade mode, gain fluctuation of each amplifier accumulates gain fluctuation of a multi-wave system to aggravate the gain fluctuation, so that imbalance of signal power in the network is aggravated, and Bit Error Rate (BER) cannot meet system requirements.
SUMMERY OF THE UTILITY MODEL
To among the present multiwave system, the bit error rate that erbium-doped fiber amplifier exists can not satisfy the defect that system operation required, the utility model provides a multi-wavelength fiber amplifier of balanced type of power, the input and the output signal of fiber amplifier become more meticulous makes the signal level and balance.
The utility model discloses a realize through following technical scheme:
a power-balanced multi-wavelength optical fiber amplifier comprises a broadband filter, a first wavelength division multiplexer, a multi-wavelength optical splitter, a multi-wavelength variable optical attenuator, a second wavelength division multiplexer, a coupler, an erbium-doped optical fiber, a multi-wavelength flat filter, a second isolator, a multi-wavelength photoelectric detector, a control module and a pump laser;
the broadband filter is sequentially connected with a first wavelength division multiplexer, a multi-wavelength optical splitter, a multi-wave variable optical attenuator, a second wavelength division multiplexer, a coupler, an erbium-doped optical fiber, a multi-wave flat filter and a second isolator;
the second output end of the multi-wave optical splitter is connected to a multi-wave photoelectric detector, and the multi-wave photoelectric detector is connected to the control module;
the first output end of the control module is connected to the multi-wave variable optical attenuator, and the second output end of the control module is connected to the pump laser;
the pump laser is connected to a coupler.
The working principle of the utility model is as follows:
when optical signals are input into a system, firstly noise signals except C-band are filtered through a broadband filter, then the optical signals enter a first wavelength division multiplexer to demultiplex a composite signal into multiple independent single-wavelength signals, a multi-wavelength optical splitter is adopted to split multiple single-wavelength signals into 1% of optical signals to enter a multi-wave photoelectric detector, the remaining 99% of optical signals enter a multi-wave adjustable optical attenuator, a control module carries out power balance adjustment on the multi-wave adjustable optical attenuator through power values obtained by the multi-wave photoelectric detector to ensure that the power difference of each single-wavelength signal is less than 0.5dB, then a second wavelength division multiplexer is used for multiplexing the flattened single-wavelength signals and coupling the flattened single-wavelength signals with a pump laser signal to an erbium-doped optical fiber, pump light excites the erbium-doped optical fiber to generate erbium ions with high energy levels, and the erbium ions release a large number of photons in the process of energy level transition, the photons can generate strong gain effect on the C-band signal light, and the power of all wavelength signals is basically consistent after the gain flattening is carried out through the multi-wave flattening filter.
The utility model discloses an amplifier carries out the balanced back of power that becomes more meticulous to the many ripples optical signal of input through first wavelength division multiplexer, many ripples optical splitter to according to the many ripples photoelectric detector's that control module gathered the detection value that obtains, carry out corresponding balanced regulation to the operating current of many ripples adjustable optical attenuator and pump laser, reunion many ripples flat filter carries out filtering, makes holistic input signal and output signal power very flat.
Further, the first wavelength division multiplexer is a 100Ghz DWDM demultiplexer.
Further, the splitting ratio of the multi-wave beam splitter is 99: 1.
Further, the multi-wave photodetector is an avalanche photodiode.
Further, the multi-wave variable optical attenuator is an MEMS optical attenuator.
Furthermore, the wavelength of the pump laser is 980 nm.
Furthermore, the control module collects the detection value of the multi-wave photoelectric detector and performs corresponding balance adjustment on the working current of the multi-wave variable optical attenuator and the pump laser according to the obtained detection value.
The utility model has the advantages as follows:
the utility model discloses an optical fiber amplifier carries out the balanced back of power that becomes more meticulous to the many ripples optical signal of input, and the smooth wave filter of many ripples that reunion for whole optical signal power is very flat, thereby optimizes the network performance.
Drawings
Fig. 1 is a structural connection diagram of the amplifier of the present invention.
Reference numerals: the optical fiber coupler comprises a 1-broadband filter, a 2-first wavelength division multiplexer, a 3-multi-wavelength optical splitter, a 4-multi-wavelength variable optical attenuator, a 5-second wavelength division multiplexer, a 6-coupler, a 7-erbium-doped optical fiber, an 8-multi-wave flat filter, a 9-second isolator, a 10-multi-wave photoelectric detector, an 11-control module and a 12-pumping laser.
Detailed Description
The present invention will be further explained with reference to the accompanying drawings.
Example 1
Fig. 1 shows a power-balanced multi-wavelength optical fiber amplifier 1, which includes a broadband filter 1, a first wavelength division multiplexer 2, a multi-wavelength optical splitter 3, a multi-wavelength tunable optical attenuator 4, a second wavelength division multiplexer 5, a coupler 6, an erbium-doped optical fiber 7, a multi-wavelength flattening filter 8, a second isolator 9, a multi-wave photodetector 10, a control module 11, and a pump laser 12;
the broadband filter 1 is sequentially connected with a first wavelength division multiplexer 2, a multi-wave optical splitter 3, a multi-wave variable optical attenuator 4, a second wavelength division multiplexer 5, a coupler 6, an erbium-doped optical fiber 7, a multi-wave flat filter 8 and a second isolator 9; a second output end of the multi-wave optical splitter 3 is connected to a multi-wave photoelectric detector 10, and the multi-wave photoelectric detector 10 is connected to a control module 11; a first output end of the control module 11 is connected to the multi-wave adjustable optical attenuator 4, and a second output end is connected to the pump laser 12; the pump laser 12 is connected to the coupler 6.
The first wavelength division multiplexer 2 is a 100Ghz DWDM demultiplexer.
The splitting ratio of the multi-wavelength splitter 3 is 99: 1.
The multi-wave adjustable optical attenuator 4 is an MEMS optical attenuator.
The multi-wave photodetector 10 is an avalanche photodiode.
The wavelength of the pump laser 12 is 980 nm.
The control module 11 collects the detection value of the multi-wave photoelectric detector 10 and performs corresponding balance adjustment on the working current of the multi-wave adjustable optical attenuator 4 and the pump laser 12 according to the obtained detection value.
The working principle of the embodiment is as follows:
the amplifier of this embodiment performs power equalization on the input multi-wave optical signal through the first wavelength division multiplexer 2 and the multi-wave optical splitter 3, performs corresponding equalization adjustment on the working currents of the multi-wave variable optical attenuator 4 and the pump laser 12 according to the detection value of the multi-wave photodetector 10 acquired by the control module 11, and performs filtering by combining with the multi-wave flat filter 8, so that the power of the whole input signal and output signal is very flat.
The above embodiments are only exemplary embodiments of the present invention, and are not intended to limit the present invention, and the protection scope of the present invention is defined by the claims. Various modifications and equivalents of the invention may be made by those skilled in the art within the spirit and scope of the invention, and such modifications and equivalents should also be considered as falling within the scope of the invention.
Claims (7)
1. A power balanced, multi-wavelength optical fiber amplifier, characterized by: the device comprises a broadband filter (1), a first wavelength division multiplexer (2), a multi-wavelength optical splitter (3), a multi-wave variable optical attenuator (4), a second wavelength division multiplexer (5), a coupler (6), an erbium-doped optical fiber (7), a multi-wave flat filter (8), a second isolator (9), a multi-wave photoelectric detector (10), a control module (11) and a pumping laser (12);
the broadband filter (1) is sequentially connected with a first wavelength division multiplexer (2), a multi-wavelength optical splitter (3), a multi-wave variable optical attenuator (4), a second wavelength division multiplexer (5), a coupler (6), an erbium-doped optical fiber (7), a multi-wave flat filter (8) and a second isolator (9);
the second output end of the multi-wave optical splitter (3) is connected to a multi-wave photoelectric detector (10), and the multi-wave photoelectric detector (10) is connected to a control module (11);
a first output end of the control module (11) is connected to the multi-wave variable optical attenuator (4), and a second output end of the control module is connected to the pump laser (12);
the pump laser (12) is connected to the coupler (6).
2. The balanced, multi-wavelength optical fiber amplifier according to claim 1, wherein: the first wavelength division multiplexer (2) is a 100Ghz DWDM wave separator.
3. The balanced, multi-wavelength optical fiber amplifier according to claim 1, wherein: the splitting ratio of the multi-wavelength splitter (3) is 99: 1.
4. The balanced, multi-wavelength optical fiber amplifier according to claim 1, wherein: the multi-wave photoelectric detector (10) is an avalanche photodiode.
5. The balanced, multi-wavelength optical fiber amplifier according to claim 1, wherein: the multi-wave variable optical attenuator (4) is an MEMS optical attenuator.
6. The balanced, multi-wavelength optical fiber amplifier according to claim 1, wherein: the wavelength of the pump laser (12) is 980 nm.
7. The balanced, multi-wavelength optical fiber amplifier according to claim 1, wherein: the control module (11) collects the detection value of the multi-wave photoelectric detector (10) and performs corresponding balance adjustment on the working current of the multi-wave variable optical attenuator (4) and the pump laser (12) according to the obtained detection value.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220364214.7U CN217281618U (en) | 2022-02-23 | 2022-02-23 | Power-balanced multi-wavelength optical fiber amplifier |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220364214.7U CN217281618U (en) | 2022-02-23 | 2022-02-23 | Power-balanced multi-wavelength optical fiber amplifier |
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| Publication Number | Publication Date |
|---|---|
| CN217281618U true CN217281618U (en) | 2022-08-23 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202220364214.7U Active CN217281618U (en) | 2022-02-23 | 2022-02-23 | Power-balanced multi-wavelength optical fiber amplifier |
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| Country | Link |
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| CN (1) | CN217281618U (en) |
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Effective date of registration: 20221019 Address after: 4th Floor, Block C, Information Incubation Building, No. D-12, Information Industry Park, High-tech Zone, Qixing District, Guilin City, Guangxi Zhuang Autonomous Region, 541004 Patentee after: GUILIN TRYIN TECHNOLOGY Co.,Ltd. Address before: No. 22, Chuanshan East Road, Qixing District, Guilin City, Guangxi Zhuang Autonomous Region, 541004 Patentee before: Yao Feng |