CN204575907U - A kind of forward direction optoelectric hybrid device of Erbium-Doped Fiber Amplifier (EDFA) - Google Patents
A kind of forward direction optoelectric hybrid device of Erbium-Doped Fiber Amplifier (EDFA) Download PDFInfo
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- CN204575907U CN204575907U CN201520282348.4U CN201520282348U CN204575907U CN 204575907 U CN204575907 U CN 204575907U CN 201520282348 U CN201520282348 U CN 201520282348U CN 204575907 U CN204575907 U CN 204575907U
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Abstract
The utility model discloses a kind of forward direction optoelectric hybrid device of Erbium-Doped Fiber Amplifier (EDFA), forward direction optoelectric hybrid device is connected by Er-doped fiber with the backward optoelectric hybrid device of Erbium-Doped Fiber Amplifier (EDFA), this forward direction optoelectric hybrid device comprises the optical splitter set gradually, isolator and wavelength division multiplexer, the top of optical splitter is provided with photoelectric commutator, it is two parts that optical splitter is used for light signal light splitting, photoelectric commutator is used for a part of light signal to be converted to electric signal, electric signal is used for monitoring, isolator is used for the isolation of luminous power, wavelength division multiplexer is used for by the light signal of different wave length separately.The utility model realize the monitoring of luminous power, isolation, wavelength-division multiplex and light splitting four kinds of functions height integrated so that forward direction optoelectric hybrid device volume reduces.
Description
Technical field
The utility model relates to Erbium-Doped Fiber Amplifier (EDFA), particularly relates to a kind of forward direction optoelectric hybrid device of Erbium-Doped Fiber Amplifier (EDFA).
Background technology
In current optical fiber telecommunications system, Erbium-Doped Fiber Amplifier (Erbium-doped Optical FiberAmplifer, be called for short: EDFA) be the critical component carrying out long haul communication, power amplification can be carried out to C-band 1550nm, S-band 1480nm and L-band 1610nm, CATV) be widely used in long-distance optical fiber communication, (Community AntennaTelevision is called for short: the field such as high-speed communication and intelligent acess CATV (cable television).
As shown in Figure 1, existing Erbium-Doped Fiber Amplifier forward direction optoelectric hybrid device structural drawing.This forward direction optoelectric hybrid device is connected 17 with backward optoelectric hybrid device by erbium-doped fiber, comprise the optical splitter 18, isolator 19 and the wavelength division multiplexer 20 that connect successively, optical splitter 18 is connected with photoelectric commutator 21, and wavelength division multiplexer 20 is connected with pump laser 22.Optical signal source 23 inputs from one end of this optical splitter 18.
Therefore, optical splitter, isolator, wavelength division multiplexer and photoelectric commutator four kinds of devices do not become one by existing forward direction optoelectric hybrid device, can not obtain the light splitting of Output optical power, monitoring, isolation and wavelength-division multiplex four kinds of functions simultaneously.
Utility model content
Fundamental purpose of the present utility model is the forward direction optoelectric hybrid device providing a kind of Erbium-Doped Fiber Amplifier (EDFA), such that the integrated level of forward direction optoelectric hybrid device promotes, smaller volume and cost reduce.
A kind of forward direction optoelectric hybrid device of Erbium-Doped Fiber Amplifier (EDFA), forward direction optoelectric hybrid device is connected by Er-doped fiber with the backward optoelectric hybrid device of Erbium-Doped Fiber Amplifier (EDFA), this forward direction optoelectric hybrid device comprises the optical splitter, isolator and the wavelength division multiplexer that set gradually, the top of optical splitter is provided with photoelectric commutator, it is two parts that optical splitter is used for light signal light splitting, photoelectric commutator is used for a part of light signal to be converted to electric signal, electric signal is used for monitoring, isolator is used for the isolation of luminous power, and wavelength division multiplexer is used for by the light signal of different wave length separately.
Preferably, before optical splitter, be provided with first collimator, after isolator, be provided with the second collimating apparatus.
Preferably, first collimator is single optical fiber calibrator.
Preferably, single optical fiber calibrator comprises the first glass tube, the first lens, the first kapillary, the first optical fiber, and the first lens and the first kapillary are oppositely arranged, and the first kapillary is arranged in the first glass tube, and the first optical fiber is arranged in the first kapillary.
Preferably, the second collimating apparatus is double-fiber collimator.
Preferably, double-fiber collimator comprises the second glass tube, the second lens, the second kapillary, the first optical fiber and the second optical fiber, second kapillary and the second lens are relatively arranged in the second glass tube, first optical fiber and the second optical fiber are set in parallel in the second kapillary, and the second lens are connected with wavelength division multiplexer.
Preferably, wavelength division multiplexer is 1550/980nm or 1550/1480nm optical filter.
Preferably, isolator comprises magnet ring, arranges three sheet superposed type lens set in magnet ring, and three sheet superposed type lens set are formed by stacking by 2 polaroid and 1 Faraday rotation sheet, and Faraday rotation sheet is arranged between 2 polaroid.
Preferably, optical splitter comprises 45 ° of oblique angle glass tubes and 45 ° of light splitting pieces, and 45 ° of light splitting pieces are arranged on the end of one end of 45 ° of oblique angle glass tubes, and the other end of 45 ° of oblique angle glass tubes is connected with the first lens.
Preferably, 45 ° of light splitting pieces comprise spectro-film and anti-reflection film, and anti-reflection film is arranged at the upper surface of spectro-film.
Because height of the present utility model is integrated, decrease the fused fiber splice number of times between optics consume and different components.Meanwhile, because height of the present utility model is integrated, reduce the volume of forward direction optoelectric hybrid device, therefore, decrease the production material of forward direction optoelectric hybrid device, thus reduce production cost.Sleeve pipe of the present utility model all adopts glass tube, and can adopt full adhesive process each part bonding, therefore, production efficiency is high.
Accompanying drawing explanation
Fig. 1 be the forward direction optoelectric hybrid device of a kind of Erbium-Doped Fiber Amplifier (EDFA) of the prior art structural drawing.
Fig. 2 is the structural representation of a kind of embodiment of forward direction optoelectric hybrid device of the utility model Erbium-Doped Fiber Amplifier (EDFA), and this forward direction optoelectric hybrid device comprises single fiber pigtail, two optical fiber pigtail, isolator and light splitting piece.
Fig. 3 is the structural representation of the single fiber pigtail shown in Fig. 2.
Fig. 4 is the structural representation of the two optical fiber pigtails shown in Fig. 2.
Fig. 5 is the structural representation of the isolator shown in Fig. 2.
Fig. 6 is the structural representation of the light splitting piece shown in Fig. 2.
Embodiment
For making the purpose of this utility model, technical scheme and advantage clearly, below in conjunction with accompanying drawing, the utility model embodiment is described in further detail.
As shown in Fig. 2, Fig. 3, Fig. 4, Fig. 5 and Fig. 6, Fig. 2 is a kind of structural drawing of forward direction optoelectric hybrid device of embodiment Erbium-Doped Fiber Amplifier (EDFA), Fig. 3 is a kind of structural representation of embodiment single fiber pigtail, Fig. 4 is the structural representation of the two optical fiber pigtail of a kind of embodiment, Fig. 5 is a kind of structural representation of embodiment isolator, and Fig. 6 is a kind of structural representation of embodiment light splitting piece.The forward direction optoelectric hybrid device of this Erbium-Doped Fiber Amplifier (EDFA) is connected by Er-doped fiber with the backward optoelectric hybrid device of Erbium-Doped Fiber Amplifier (EDFA), this forward direction optoelectric hybrid device comprises the optical splitter 5, isolator 11 and the wavelength division multiplexer 10 that set gradually, the top of optical splitter 5 is provided with photoelectric commutator 12, optical splitter 5 is for being two parts by light signal light splitting, photoelectric commutator 12 is for being converted to electric signal by a part of light signal, electric signal is used for monitoring, isolator 11 is for the isolation of luminous power, and wavelength division multiplexer 10 is for separating the light signal of different wave length.Be provided with first collimator before optical splitter 5, after isolator 11, be provided with the second collimating apparatus.First collimator is single optical fiber calibrator.Single optical fiber calibrator comprises the first glass tube 1, first lens 15 and single fiber pigtail 16.
This single fiber pigtail 16 comprises the first kapillary 17, first optical fiber 18, first lens 15 and the first kapillary 17 is oppositely arranged, and the first kapillary 17 is arranged in the first glass tube 1, and the first optical fiber 18 is arranged in the first kapillary 17.
Second collimating apparatus is double-fiber collimator.Double-fiber collimator comprises the second glass tube 7, second lens 9 and two optical fiber pigtail 8.
This pair of optical fiber pigtail 8 comprises the second kapillary 20, first optical fiber 19 and the second optical fiber 21, second kapillary 20 and the second lens 9 are relatively arranged in the second glass tube 7, first optical fiber 19 and the second optical fiber 21 are set in parallel in the second kapillary 20, and the second lens 9 are connected with wavelength division multiplexer 10.
Wavelength division multiplexer 10 is 1550/980nm or 1550/1480nm optical filter.
Isolator 11 comprises magnet ring 22, arranges three sheet superposed type lens set in magnet ring 22, and three sheet superposed type lens set are formed by stacking by 2 polaroid 23 and 1 Faraday rotation sheet 24, and Faraday rotation sheet 24 is arranged between 2 polaroid 23.
Optical splitter 5 comprises 45 ° of oblique angle glass tubes 13 and 45 ° of light splitting pieces, and 45 ° of light splitting pieces are arranged on the end of one end of 45 ° of oblique angle glass tubes 13, and the other end of 45 ° of oblique angle glass tubes 13 is connected with the first lens 15.45 ° of light splitting pieces comprise spectro-film 25 and anti-reflection film 26, and anti-reflection film 26 is arranged at the upper surface of spectro-film 25.
Because height of the present utility model is integrated, decrease the fused fiber splice number of times between optics consume and different components.Meanwhile, because height of the present utility model is integrated, reduce the volume of forward direction optoelectric hybrid device, therefore, decrease the production material of forward direction optoelectric hybrid device, thus reduce production cost.Sleeve pipe of the present utility model all adopts glass tube, and can adopt full adhesive process each part bonding, therefore, production efficiency is high.
Composition graphs 2 illustrates principle of work of the present utility model:
(1), the light signal of 1550nm wave band inputs from the first optical fiber 18, after the first lens 15 collimate, be transferred to optical splitter 5, part light signal (such as: 98% transmission) is transmitted to isolator 11, part light signal (such as: 2% reflection) is transferred to photoelectric commutator 12 and is converted to electric signal, and this electric signal is used for monitoring.
(2), be transmitted to the light signal of isolator 11 after the isolation of isolator 11, cause light signal forward to transmit, reverse transfer is prevented from, thus ensure that light path is irreversible, decreases the interference of the signal returned.
(3) by the optical signal transmission after the isolation of isolator 11 to wavelength division multiplexer 10, after wavelength division multiplexer 10 wavelength-division multiplex, collimated by the second lens 9, be transferred to the first optical fiber 19, export through the first optical fiber 19.
(4) the pump signal 1480nm sent by pump laser or 980nm, inputs through the second optical fiber 21, after the second lens 9 collimate, transfers to wavelength division multiplexer 10, is transferred to the first optical fiber 19 after wavelength division multiplexer 10 wavelength-division multiplex.
Be described in detail the embodiment of utility model above, but it is as example, the utility model does not limit and embodiment described above.For a person skilled in the art, any equivalent modifications or alternative also all among category of the present utility model that this utility model is carried out, therefore, not departing from the equalization conversion and amendment, improvement etc. done under spirit of the present utility model and spirit, all should be encompassed in scope of the present utility model.
Claims (10)
1. the forward direction optoelectric hybrid device of an Erbium-Doped Fiber Amplifier (EDFA), described forward direction optoelectric hybrid device is connected by Er-doped fiber with the backward optoelectric hybrid device of described Erbium-Doped Fiber Amplifier (EDFA), it is characterized in that, this forward direction optoelectric hybrid device comprises the optical splitter set gradually, isolator and wavelength division multiplexer, the top of described optical splitter is provided with photoelectric commutator, it is two parts that described optical splitter is used for light signal light splitting, described photoelectric commutator is used for a part of light signal to be converted to electric signal, described electric signal is used for monitoring, described isolator is used for the isolation of luminous power, described wavelength division multiplexer is used for by the light signal of different wave length separately.
2. the forward direction optoelectric hybrid device of Erbium-Doped Fiber Amplifier (EDFA) according to claim 1, is characterized in that, is provided with first collimator before described optical splitter, is provided with the second collimating apparatus after described isolator.
3. the forward direction optoelectric hybrid device of Erbium-Doped Fiber Amplifier (EDFA) according to claim 2, is characterized in that, described first collimator is single optical fiber calibrator.
4. the forward direction optoelectric hybrid device of Erbium-Doped Fiber Amplifier (EDFA) according to claim 3, it is characterized in that, described single optical fiber calibrator comprises the first glass tube, the first lens, the first kapillary, the first optical fiber, described first lens and described first kapillary are oppositely arranged, described first kapillary is arranged in described first glass tube, and described first optical fiber is arranged in described first kapillary.
5. the forward direction optoelectric hybrid device of Erbium-Doped Fiber Amplifier (EDFA) according to claim 1, is characterized in that, described second collimating apparatus is double-fiber collimator.
6. the forward direction optoelectric hybrid device of Erbium-Doped Fiber Amplifier (EDFA) according to claim 5, it is characterized in that, described double-fiber collimator comprises the second glass tube, the second lens, the second kapillary, the first optical fiber and the second optical fiber, described second kapillary and described second lens are relatively arranged in described second glass tube, described first optical fiber and described second optical fiber are set in parallel in described second kapillary, and described second lens are connected with described wavelength division multiplexer.
7. the forward direction optoelectric hybrid device of Erbium-Doped Fiber Amplifier (EDFA) according to claim 1, is characterized in that, described wavelength division multiplexer is 1550/980nm or 1550/1480nm optical filter.
8. the forward direction optoelectric hybrid device of Erbium-Doped Fiber Amplifier (EDFA) according to claim 1, it is characterized in that, described isolator comprises magnet ring, three sheet superposed type lens set are set in described magnet ring, described three sheet superposed type lens set are formed by stacking by 2 polaroid and 1 Faraday rotation sheet, and described Faraday rotation sheet is arranged between 2 described polaroid.
9. the forward direction optoelectric hybrid device of the Erbium-Doped Fiber Amplifier (EDFA) according to claim 1 or 4, it is characterized in that, described optical splitter comprises 45 ° of oblique angle glass tubes and 45 ° of light splitting pieces, described 45 ° of light splitting pieces are arranged on the end of one end of described 45 ° of oblique angle glass tubes, and the other end of described 45 ° of oblique angle glass tubes is connected with described first lens.
10. the forward direction optoelectric hybrid device of Erbium-Doped Fiber Amplifier (EDFA) according to claim 1, is characterized in that, described 45 ° of light splitting pieces comprise spectro-film and anti-reflection film, and described anti-reflection film is arranged at the upper surface of described spectro-film.
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| CN201520282348.4U CN204575907U (en) | 2015-05-04 | 2015-05-04 | A kind of forward direction optoelectric hybrid device of Erbium-Doped Fiber Amplifier (EDFA) |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105338433A (en) * | 2015-10-16 | 2016-02-17 | 中国人民解放军国防科学技术大学 | Method for parallelly calculating broadcast communication |
| WO2017041206A1 (en) * | 2015-09-07 | 2017-03-16 | Oplink Communications, Llc | Optical amplifier |
| CN108873159A (en) * | 2018-06-19 | 2018-11-23 | 武汉电信器件有限公司 | A kind of integrated device for EDFA Erbium-Doped Fiber Amplifier |
-
2015
- 2015-05-04 CN CN201520282348.4U patent/CN204575907U/en active Active
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2017041206A1 (en) * | 2015-09-07 | 2017-03-16 | Oplink Communications, Llc | Optical amplifier |
| US10855044B2 (en) | 2015-09-07 | 2020-12-01 | Molex, Llc | Optical amplifier |
| CN105338433A (en) * | 2015-10-16 | 2016-02-17 | 中国人民解放军国防科学技术大学 | Method for parallelly calculating broadcast communication |
| CN105338433B (en) * | 2015-10-16 | 2019-01-08 | 中国人民解放军国防科学技术大学 | A kind of method of parallel computation broadcast communication |
| CN108873159A (en) * | 2018-06-19 | 2018-11-23 | 武汉电信器件有限公司 | A kind of integrated device for EDFA Erbium-Doped Fiber Amplifier |
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