CN219892603U - High-integration optical fiber amplifier module - Google Patents
High-integration optical fiber amplifier module Download PDFInfo
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- CN219892603U CN219892603U CN202321260845.5U CN202321260845U CN219892603U CN 219892603 U CN219892603 U CN 219892603U CN 202321260845 U CN202321260845 U CN 202321260845U CN 219892603 U CN219892603 U CN 219892603U
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- fiber amplifier
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- optical fiber
- light
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- 239000013307 optical fiber Substances 0.000 title claims abstract description 48
- 239000000835 fiber Substances 0.000 claims abstract description 28
- 230000003287 optical effect Effects 0.000 claims abstract description 23
- 238000001069 Raman spectroscopy Methods 0.000 claims abstract description 19
- 230000003321 amplification Effects 0.000 claims abstract description 11
- 238000003199 nucleic acid amplification method Methods 0.000 claims abstract description 11
- 238000001514 detection method Methods 0.000 claims abstract description 8
- 230000010354 integration Effects 0.000 abstract description 5
- 230000007547 defect Effects 0.000 abstract description 3
- 238000006243 chemical reaction Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000008929 regeneration Effects 0.000 description 1
- 238000011069 regeneration method Methods 0.000 description 1
- 239000004065 semiconductor Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
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- Optical Modulation, Optical Deflection, Nonlinear Optics, Optical Demodulation, Optical Logic Elements (AREA)
- Optical Communication System (AREA)
- Lasers (AREA)
Abstract
The utility model relates to an optical fiber amplifier, in particular to a high-integration optical fiber amplifier module, an erbium-doped optical fiber amplifier EDFA, which amplifies forward signal light and inputs the amplified forward signal light to a variable optical attenuator VOA; the adjustable optical attenuator VOA is used for controlling the power intensity of the amplified forward signal light and inputting the forward signal light to the wavelength division multiplexer WDM; a Raman fiber amplifier RFA, which inputs pump light to a wavelength division multiplexer WDM and provides Raman amplification for both forward signal light and backward sensing scattered light; the WDM is connected with the forward signal light output by the adjustable optical attenuator VOA and the pump light output by the Raman fiber amplifier RFA, and receives the back sensing scattered light and outputs the back sensing scattered light to the signal detection system; the technical scheme provided by the utility model can effectively overcome the defects of low integration level, low gain coefficient and high noise coefficient in the prior art.
Description
Technical Field
The present utility model relates to an optical fiber amplifier, and more particularly, to an optical fiber amplifier module with high integration.
Background
An Optical Fiber Amplifier (OFA) is a novel all-optical amplifier used in an optical fiber communication line to amplify signals, and can be generally divided into three types of relay amplification, pre-amplification and power amplification according to the position and the function of the novel all-optical amplifier in the optical fiber communication line.
Compared with the traditional semiconductor laser amplifier (SOA), the optical fiber amplifier does not need to carry out photoelectric conversion, electro-optical conversion, signal regeneration and other complex processes, can directly carry out all-optical amplification on signals, has good transparency, and is particularly suitable for relay amplification of long-distance optical communication. The birth of the optical fiber amplifier can be said to lay a technical foundation for realizing all-optical communication.
However, the gain coefficient of the existing optical fiber amplifier is low, and the noise coefficient is high, so that the reliability of the optical fiber amplifier is poor, and the optical fiber amplifier cannot be well applied to a large-capacity high-speed optical fiber communication system and a distributed optical fiber sensing system with ultra-long distances.
Disclosure of Invention
(one) solving the technical problems
Aiming at the defects existing in the prior art, the utility model provides the high-integration optical fiber amplifier module, which can effectively overcome the defects of lower integration level, lower gain coefficient and higher noise coefficient existing in the prior art.
(II) technical scheme
In order to achieve the above purpose, the utility model is realized by the following technical scheme:
the high-integration optical fiber amplifier module comprises an erbium-doped optical fiber amplifier EDFA, an adjustable optical attenuator VOA, a Raman optical fiber amplifier RFA and a wavelength division multiplexer WDM;
the erbium-doped optical fiber amplifier EDFA amplifies forward signal light and inputs the amplified forward signal light to the adjustable optical attenuator VOA;
the adjustable optical attenuator VOA is used for controlling the power intensity of the amplified forward signal light and inputting the forward signal light to the wavelength division multiplexer WDM;
a Raman fiber amplifier RFA, which inputs pump light to a wavelength division multiplexer WDM and provides Raman amplification for both forward signal light and backward sensing scattered light;
the wavelength division multiplexer WDM is connected with the forward signal light output by the adjustable optical attenuator VOA and the pump light output by the Raman fiber amplifier RFA, receives the back sensing scattered light at the same time, and outputs the back sensing scattered light to the signal detection system.
Preferably, the 1 port of the circulator is connected to the output end of the adjustable optical attenuator VOA, the 2 port of the circulator is connected to the input end of the wavelength division multiplexer WDM, and the 3 port of the circulator is connected to the signal detection system.
Preferably, the circulator is a 1550nm single mode fiber circulator, and the wavelength division multiplexer WDM is a 1450/1550nm wavelength division multiplexer.
Preferably, the input end of the erbium-doped fiber amplifier EDFA is connected with the forward signal light through an input optical fiber, and the output end of the wavelength division multiplexer WDM is connected with the sensing optical fiber through an output optical fiber.
Preferably, the forward signal light is 1550nm signal light, and the backward sensing scattered light is 1550nm scattered light.
(III) beneficial effects
Compared with the prior art, the high-integration optical fiber amplifier module provided by the utility model integrates the erbium-doped optical fiber amplifier EDFA, the adjustable optical attenuator VOA, the Raman optical fiber amplifier RFA, the wavelength division multiplexer WDM and the optical fiber circulator, has high integration, can greatly reduce system complexity and volume, and can improve gain coefficient and reduce noise coefficient, so that the optical fiber amplifier module has better reliability, and is suitable for a large-capacity high-speed optical fiber communication system with ultra-long distance and a distributed optical fiber sensing system.
Drawings
In order to more clearly illustrate the embodiments of the present utility model or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below. It is evident that the drawings in the following description are only some embodiments of the present utility model and that other drawings may be obtained from these drawings without inventive effort for a person of ordinary skill in the art.
Fig. 1 is a schematic structural view of the present utility model.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present utility model more clear, the technical solutions of the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present utility model. It will be apparent that the described embodiments are some, but not all, embodiments of the utility model. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.
A high-integration optical fiber amplifier module, as shown in fig. 1, comprises an erbium-doped optical fiber amplifier EDFA, an adjustable optical attenuator VOA, a raman optical fiber amplifier RFA and a wavelength division multiplexer WDM;
the erbium-doped optical fiber amplifier EDFA amplifies forward signal light and inputs the amplified forward signal light to the adjustable optical attenuator VOA;
the adjustable optical attenuator VOA is used for controlling the power intensity of the amplified forward signal light and inputting the forward signal light to the wavelength division multiplexer WDM;
a Raman fiber amplifier RFA, which inputs pump light to a wavelength division multiplexer WDM and provides Raman amplification for both forward signal light and backward sensing scattered light;
the wavelength division multiplexer WDM is connected with the forward signal light output by the adjustable optical attenuator VOA and the pump light output by the Raman fiber amplifier RFA, receives the back sensing scattered light at the same time, and outputs the back sensing scattered light to the signal detection system.
The 1 port of the circulator is connected with the output end of the adjustable optical attenuator VOA, the 2 port of the circulator is connected with the input end of the wavelength division multiplexer WDM, and the 3 port of the circulator is connected with the signal detection system.
The circulator is a 1550nm single-mode fiber circulator, and the WDM is a 1450/1550nm WDM.
The input end of the erbium-doped fiber amplifier EDFA is connected with the forward signal light through the input optical fiber, and the output end of the WDM is connected with the sensing optical fiber through the output optical fiber.
The forward signal light is 1550nm signal light, and the back sensing scattered light is 1550nm scattered light.
As shown in fig. 1, forward signal light (1550 nm signal light) enters an erbium-doped fiber amplifier EDFA through an input optical fiber, amplified by the erbium-doped fiber amplifier EDFA, subjected to power intensity control by an adjustable optical attenuator VOA, enters a wavelength division multiplexer WDM through a 1 port and a 2 port of a circulator, and is output to a sensing optical fiber.
At the same time, the pump light generated by the raman fiber amplifier RFA also enters the sensing fiber, providing raman amplification for both forward signal light and back sensing scattered light (1550 nm scattered light). The back-sensing scattered light returns to the wavelength division multiplexer WDM and is output to a signal detection system (typically a signal detector) through the 2-port and 3-port of the circulator.
In the technical scheme of the utility model, the EDFA, the adjustable optical attenuator VOA, the RFA, the WDM and the fiber circulator are integrated, and compared with the traditional discrete EDFA and Raman amplification system, the utility model has high integration level, can greatly reduce the complexity of the system, reduce the volume, and can improve the gain coefficient and reduce the noise coefficient, so that the fiber amplifier module has better reliability, and is suitable for a large-capacity high-speed fiber communication system with ultra-long distance and a distributed fiber sensing system.
The above embodiments are only for illustrating the technical solution of the present utility model, and are not limiting; although the utility model has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical scheme described in the foregoing embodiments can be modified or some technical features thereof can be replaced by equivalents; such modifications and substitutions do not depart from the spirit and scope of the technical solutions of the embodiments of the present utility model.
Claims (5)
1. A high-integration optical fiber amplifier module, characterized in that: the optical fiber amplifier comprises an erbium-doped fiber amplifier EDFA, an adjustable optical attenuator VOA, a Raman fiber amplifier RFA and a wavelength division multiplexer WDM;
the erbium-doped optical fiber amplifier EDFA amplifies forward signal light and inputs the amplified forward signal light to the adjustable optical attenuator VOA;
the adjustable optical attenuator VOA is used for controlling the power intensity of the amplified forward signal light and inputting the forward signal light to the wavelength division multiplexer WDM;
a Raman fiber amplifier RFA, which inputs pump light to a wavelength division multiplexer WDM and provides Raman amplification for both forward signal light and backward sensing scattered light;
the wavelength division multiplexer WDM is connected with the forward signal light output by the adjustable optical attenuator VOA and the pump light output by the Raman fiber amplifier RFA, receives the back sensing scattered light at the same time, and outputs the back sensing scattered light to the signal detection system.
2. The high-integration fiber amplifier module of claim 1, wherein: the optical fiber optical system further comprises a circulator, wherein a 1 port of the circulator is connected with the output end of the adjustable optical attenuator VOA, a 2 port of the circulator is connected with the input end of the wavelength division multiplexer WDM, and a 3 port of the circulator is connected with the signal detection system.
3. The high-integration fiber amplifier module of claim 2, wherein: the circulator is a 1550nm single-mode fiber circulator, and the WDM is a 1450/1550nm WDM.
4. The high-integration fiber amplifier module of claim 1, wherein: the input end of the erbium-doped fiber amplifier EDFA is connected with forward signal light through an input optical fiber, and the output end of the WDM is connected with a sensing optical fiber through an output optical fiber.
5. The high-integration fiber amplifier module of claim 1, wherein: the forward signal light is 1550nm signal light, and the back sensing scattered light is 1550nm scattered light.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321260845.5U CN219892603U (en) | 2023-05-23 | 2023-05-23 | High-integration optical fiber amplifier module |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321260845.5U CN219892603U (en) | 2023-05-23 | 2023-05-23 | High-integration optical fiber amplifier module |
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| Publication Number | Publication Date |
|---|---|
| CN219892603U true CN219892603U (en) | 2023-10-24 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202321260845.5U Active CN219892603U (en) | 2023-05-23 | 2023-05-23 | High-integration optical fiber amplifier module |
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| CN (1) | CN219892603U (en) |
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2023
- 2023-05-23 CN CN202321260845.5U patent/CN219892603U/en active Active
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