CN108448372A - Integrated optical fiber device and optical fiber amplifier thereof - Google Patents
Integrated optical fiber device and optical fiber amplifier thereof Download PDFInfo
- Publication number
- CN108448372A CN108448372A CN201810495009.2A CN201810495009A CN108448372A CN 108448372 A CN108448372 A CN 108448372A CN 201810495009 A CN201810495009 A CN 201810495009A CN 108448372 A CN108448372 A CN 108448372A
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- laser
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- 239000013307 optical fiber Substances 0.000 title claims abstract description 115
- 239000000835 fiber Substances 0.000 claims abstract description 121
- 238000005086 pumping Methods 0.000 claims abstract description 26
- 230000005540 biological transmission Effects 0.000 claims abstract description 9
- 230000004927 fusion Effects 0.000 claims description 23
- 238000000605 extraction Methods 0.000 claims description 12
- 238000003466 welding Methods 0.000 claims description 8
- 238000002310 reflectometry Methods 0.000 claims description 5
- 238000000034 method Methods 0.000 claims description 3
- 230000008569 process Effects 0.000 claims description 3
- 230000032258 transport Effects 0.000 abstract 1
- 230000003287 optical effect Effects 0.000 description 5
- 230000003321 amplification Effects 0.000 description 3
- 230000008878 coupling Effects 0.000 description 3
- 238000010168 coupling process Methods 0.000 description 3
- 238000005859 coupling reaction Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 238000003199 nucleic acid amplification method Methods 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 230000004313 glare Effects 0.000 description 2
- 230000008054 signal transmission Effects 0.000 description 2
- 230000002269 spontaneous effect Effects 0.000 description 2
- 230000000747 cardiac effect Effects 0.000 description 1
- 235000013399 edible fruits Nutrition 0.000 description 1
- 230000036541 health Effects 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 238000009738 saturating Methods 0.000 description 1
- 230000003595 spectral effect Effects 0.000 description 1
- 238000001228 spectrum Methods 0.000 description 1
- 238000002834 transmittance Methods 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01S—DEVICES USING THE PROCESS OF LIGHT AMPLIFICATION BY STIMULATED EMISSION OF RADIATION [LASER] TO AMPLIFY OR GENERATE LIGHT; DEVICES USING STIMULATED EMISSION OF ELECTROMAGNETIC RADIATION IN WAVE RANGES OTHER THAN OPTICAL
- H01S3/00—Lasers, i.e. devices using stimulated emission of electromagnetic radiation in the infrared, visible or ultraviolet wave range
- H01S3/05—Construction or shape of optical resonators; Accommodation of active medium therein; Shape of active medium
- H01S3/06—Construction or shape of active medium
- H01S3/063—Waveguide lasers, i.e. whereby the dimensions of the waveguide are of the order of the light wavelength
- H01S3/067—Fibre lasers
- H01S3/06754—Fibre amplifiers
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
- G02B6/24—Coupling light guides
- G02B6/26—Optical coupling means
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01S—DEVICES USING THE PROCESS OF LIGHT AMPLIFICATION BY STIMULATED EMISSION OF RADIATION [LASER] TO AMPLIFY OR GENERATE LIGHT; DEVICES USING STIMULATED EMISSION OF ELECTROMAGNETIC RADIATION IN WAVE RANGES OTHER THAN OPTICAL
- H01S3/00—Lasers, i.e. devices using stimulated emission of electromagnetic radiation in the infrared, visible or ultraviolet wave range
- H01S3/05—Construction or shape of optical resonators; Accommodation of active medium therein; Shape of active medium
- H01S3/06—Construction or shape of active medium
- H01S3/063—Waveguide lasers, i.e. whereby the dimensions of the waveguide are of the order of the light wavelength
- H01S3/067—Fibre lasers
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- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Optics & Photonics (AREA)
- Engineering & Computer Science (AREA)
- Plasma & Fusion (AREA)
- General Physics & Mathematics (AREA)
- Lasers (AREA)
Abstract
The invention discloses an integrated optical fiber device and an optical fiber amplifier thereof, comprising: the first energy transmission optical fiber, the dichroic mirror, the second energy transmission optical fiber and the third energy transmission optical fiber; the first end of the first energy transmission optical fiber is a signal laser incidence end; the first end of the second energy transmission fiber is a pumping laser incident end; after the pumping laser is transmitted by the dichroic mirror and coupled with the signal laser, the signal laser is reflected by the dichroic mirror and then is transmitted out of the integrated optical fiber device from the first end of the third energy transmission optical fiber. This optical fiber device need not to coil fixedly the tail optical fiber, and the splice point is only 2, and the overall reliability obtains improving, and convenient and fast is built in the system equipment, and the system after building transports conveniently. The device has the advantages of compact structure, stable performance, convenient use and the like. The invention also provides an optical fiber amplifier built by the integrated optical fiber device.
Description
Technical field
The present invention relates to a kind of integrated optical fibre device and its fiber amplifiers, belong to integrated field of fiber optics.
Background technology
Optical fiber laser has the characteristics that perfect heat-dissipating, system structure are compact, beam quality is high, adds in recent years in industry
The fields such as work, health care and scientific research are widely applied.The optical-fiber laser of early stage mostly uses greatly space optical path structure,
There is a problem of that coupling optical path is complicated, stability difference.In order to realize that the all-fiber of fiber amplifier, researcher devise more
Passive optical fibre device of the kind with tail optical fiber can complete laser/amplification using these optical fibre devices by way of fused fiber splice
Device is built, and optical path adjusting is not necessarily to.But since these are relatively low for the optical fibre device integrated level of fiber laser/amplifier,
During system building, need multiple passive optical devices carrying out welding, fusion point is more, needs to each passive optical fiber device
The tail optical fiber of part is wound and fixes, and build process is complex.
Invention content
According to an aspect of the invention, there is provided a kind of integrated optical fibre device.Optical fiber can be carried out using the device to put
Big device is built, and fusion point only 2, global reliability is improved, and system assembles are built convenient and efficient.The device has structure tight
It gathers, the advantages that performance is stable, easy to use.
Integrated optical fibre device, including：Collimating element, the first energy-transmission optic fibre, dichroic mirror, the second energy-transmission optic fibre and third pass
It can optical fiber；
The first end of first energy-transmission optic fibre is signal laser incidence end；
The first end of second energy-transmission optic fibre is pumping laser incidence end；
After pumping laser couples after dichroic mirror transmits with signal laser, signal laser passes after dichroic mirror reflects from third
The first end of energy optical fiber spreads out of integrated optical fibre device；
Collimating element is connect with the first energy-transmission optic fibre, the second energy-transmission optic fibre and third energy-transmission optic fibre optics respectively；
Dichroic mirror passes light path under with the second end of third energy-transmission optic fibre and connect, and signal laser is by passing down light path to the
Three energy-transmission optic fibres transmit；
Lower biography light path includes：The light extraction end light path of band pass filter and spatial light isolator, band pass filter and dichroic mirror
Connection；The light extraction end of band pass filter is connect with spatial light isolator light path；The light extraction end of spatial light isolator passes energy with third
Optic fibre light path connects.
Optionally, collimating element includes：First optical fiber collimator, the second optical fiber collimator and third optical fiber collimator, the
One optical fiber collimator is connect with the second end optics of the first energy-transmission optic fibre；
Second optical fiber collimator is connect with the second end optics of the second energy-transmission optic fibre；
Third optical fiber collimator is connect with the second end optics of third energy-transmission optic fibre.
Optionally, integrated optical fibre device further includes third optical fiber collimator, and third optical fiber collimator is passed with third can light
Fine second end optics connection；The light extraction end of spatial light isolator is connect with third optical fiber collimator light path.
Optionally, band pass filter can be λ by the wavelength of laser0± Δ λ, wherein λ0For the centre wavelength of signal laser,
Δ λ is definite value.
Optionally, Δ λ is 1~10nm.
Optionally, dichroic mirror is to transmitting to the right the reflectivity of laser>99%；Dichroic mirror to transmitting the transmissivity of laser to the left
>99%.
Another aspect of the present invention additionally provides a kind of fiber amplifier, includes such as above-mentioned integrated optical fibre device, mixes
Veiling glare fibre, signal laser source and pump laser；Signal laser source is connect with doped fiber light path, doped fiber and integrated light
The signal laser incidence end welding of fiber device connects；The pumping laser incidence end welding of pump laser and integrated optical fibre device
Connection.
Preferably, fiber amplifier further includes the first fusion point and the second fusion point, and the signal of integrated optical fibre device swashs
Light incident side is doped fiber, and doped fiber is connect with the first energy-transmission optic fibre by the first fusion point optics；Integrated optical fiber device
The pumping laser incidence end of part is that the second energy-transmission optic fibre, pump laser and the second energy-transmission optic fibre are connected by the second fusion point optics
It connects.
The advantageous effect that can generate of the present invention includes：
1) integrated optical fibre device provided by the present invention, the device have pumping/signal laser coupling, Amplified Spontaneous spoke
It penetrates (ASE) spectrum and filters out the function being isolated with output signal laser, can be achieved with an optical fiber by the passive device puts
Big device is built.It avoids building fiber amplifier using multiple optical fibre devices, reduces optical fiber fusion welding point, without to each device
Tail optical fiber is arranged and is wound, and build process is simple and efficient.
2) fiber amplifier provided by the present invention, it is simple in structure, build program simplicity, it is only necessary to which 2 fusion points are set, i.e.,
It can complete to build, while without coiling fixed a large amount of tail optical fibers.
Description of the drawings
Fig. 1 is integrated optical fibre device structural schematic diagram in one embodiment of the present invention；
Fig. 2 is the structural schematic diagram for the fiber amplifier that integrated optical fibre device is built in one embodiment of the present invention.
Marginal data：
11, the first energy-transmission optic fibre；12, the second energy-transmission optic fibre；13, third energy-transmission optic fibre；21, the first optical fiber collimator；22、
Second optical fiber collimator；23, third optical fiber collimator；30, dichroic mirror；40, band pass filter；50, spatial light isolator；60、
Doped fiber；70, pump laser；81, the first fusion point；82, the second fusion point.
Specific implementation mode
The present invention is described in detail with reference to embodiment, but the invention is not limited in these embodiments.
Referring to Fig. 1, integrated optical fibre device provided by the invention, including：First energy-transmission optic fibre 11, dichroic mirror 30, second
Energy-transmission optic fibre 12 and third energy-transmission optic fibre 13；The first end of first energy-transmission optic fibre 11 is signal laser incidence end；Second passes energy light
The first end of fibre 12 is pumping laser incidence end；After pumping laser couples after the transmission of dichroic mirror 30 with signal laser, signal swashs
Light spreads out of integrated optical fibre device after the reflection of dichroic mirror 30 from the first end of third energy-transmission optic fibre 13.
Optionally, further include collimating element, collimating element respectively with the first energy-transmission optic fibre 11, the second energy-transmission optic fibre 12 and
Three energy-transmission optic fibres, 13 optics connects.By increasing collimating element, the first energy-transmission optic fibre 11, the second energy-transmission optic fibre 12 and the can be improved
The laser coupling efficiency of three energy-transmission optic fibres 13, while improving the first energy-transmission optic fibre 11, the second energy-transmission optic fibre 12 and third and passing energy light
The connection precision of fibre 13 and space optical path.
Optionally, collimating element includes：First optical fiber collimator 21, the second optical fiber collimator 22 and third optical fiber collimator
23, the first optical fiber collimator 21 is connect with the second end optics of the first energy-transmission optic fibre 11；Second optical fiber collimator 22 and second passes
The second end optics connection of energy optical fiber 12；Third optical fiber collimator 23 is connect with the second end optics of third energy-transmission optic fibre 13.
Optionally, the first end of the first energy-transmission optic fibre 11 is common end；The first end of second energy-transmission optic fibre 12 is that pumping swashs
Light incident side；The first end of third energy-transmission optic fibre 13 is exit end.Common end herein refers to can be with simultaneous transmission of signals laser
With the port of pumping laser.
Preferably, dichroic mirror 30 passes light path under with the second end of third energy-transmission optic fibre 13 and connect, and signal laser passes through
Lower biography light path is only transmitted to third energy-transmission optic fibre 13.By passing light path under setting, it is avoided that the reverse transfer of laser, also may be used certainly
To realize identical effect by using other light paths.
Referring to Fig. 2, optionally, lower biography light path includes：Band pass filter 40 and spatial light isolator 50, band pass filter 40
It is connect with the light extraction end light path of dichroic mirror 30；The light extraction end of band pass filter 40 is connect with 50 light path of spatial light isolator；Space
The light extraction end of optoisolator 50 is connect with 13 light path of third energy-transmission optic fibre.
Optionally, the light extraction end of spatial light isolator 50 is connect with 23 light path of third optical fiber collimator.
Optionally, band pass filter 40 can be λ by the wavelength of laser0± Δ λ, wherein λ0For the middle cardiac wave of signal laser
Long, Δ λ is definite value.Δ λ can be adjusted according to the needs of built system, with realize the laser that is reflected from dichroic mirror 30 only to
Third energy-transmission optic fibre 13 transmits, without reverse transfer occurs.Optional Δ λ is 1~10nm.The effect can be realized at this time
Fruit.
Optionally, dichroic mirror 30 is to transmitting to the right the reflectivity of laser>99%；Dichroic mirror 30 to transmitting the saturating of laser to the left
Penetrate rate>99%.Orientation herein is specifically signified, refers to the coordinate representation in attached drawing 2.The laser that dichroic mirror 30 transmits to the right
For signal laser；The laser transmitted to the left is pumping laser.
Another aspect of the present invention additionally provides a kind of fiber amplifier, includes such as above-mentioned integrated optical fibre device, mixes
Veiling glare fibre 60, signal laser source and pump laser 70；Signal laser source is connect with 60 light path of doped fiber, doped fiber 60 with
The signal laser incidence end welding of integrated optical fibre device connects；The pumping laser of pump laser 70 and integrated optical fibre device
Incidence end welding connects.
Preferably, fiber amplifier further includes the first fusion point 81 and the second fusion point 82, the letter of integrated optical fibre device
Number laser light incident end is that the first energy-transmission optic fibre 11, doped fiber 60 and the first energy-transmission optic fibre 11 pass through 81 optics of the first fusion point company
It connects；The pumping laser incidence end of integrated optical fibre device is the second energy-transmission optic fibre 12, pump laser 70 and the second energy-transmission optic fibre
12 are connected by 82 optics of the second fusion point.
Referring to Fig. 2, in one embodiment, signal laser is transmitted by optical fiber, transmits the doped fiber of signal laser
60 are connect by the first fusion point 81 with integrated optical fibre device optics；Pump laser 70 and integrated optical fibre device pass through the
Two fusion points, 82 optics connects.By using above-mentioned integrated optical fibre device, it is only necessary to 2 fusion points, you can complete amplification
Device is built, while avoiding using a large amount of tail optical fibers, simplifies amplifier architecture.
Preferably, third energy-transmission optic fibre 13 is the exit end of fiber amplifier.
In one embodiment, referring to Fig. 2, a kind of integrated optical fibre device, including the first energy-transmission optic fibre 11, the first light
It is fine collimator 21, the second energy-transmission optic fibre 12, the second optical fiber collimator 22, third energy-transmission optic fibre 13, third optical fiber collimator 23, double
Look mirror 30, band pass filter 40, spatial light isolator 50.
The left end of first energy-transmission optic fibre 11 is common end, and right end is connect with 21 optics of the first optical fiber collimator；
First optical fiber collimator 21 emits to the right after collimating the signal laser that the first energy-transmission optic fibre 11 transmits to the right；It will be to
The pumping laser of left transmission is coupled into the first energy-transmission optic fibre 11；
The right end of second energy-transmission optic fibre 12 is pumping laser input terminal, and left end is connect with 22 optics of the second optical fiber collimator；
Second optical fiber collimator 22 emits to the left after collimating the pumping laser that the second energy-transmission optic fibre 12 transmits to the left；
The lower end of third energy-transmission optic fibre 13 is signal laser output end, and upper end is connect with 23 optics of third optical fiber collimator；
The signal laser transmitted downwards is coupled into third energy-transmission optic fibre 13 by third optical fiber collimator 23；
Dichroic mirror 30 is placed between the first optical fiber collimator 21 and the second optical fiber collimator 22, for the pumping transmitted to the left
Laser transmittance>99%, for the signal laser reflectivity transmitted to the right>99%；
Band pass filter 40 is placed in from the light path for the signal laser that dichroic mirror 30 reflects, and thang-kng range meets：λ0
± Δ λ, wherein λ0It is definite value for the centre wavelength of signal laser.Δ λ is 5nm in this embodiment；
Spatial light isolator 50 is connect with 40 light path of pass filter piece, for the laser thang-kng transmitted from top to bottom；For from
Under laser up not thang-kng.
Below only for example, building the course of work of amplifier using the device：
Such as Fig. 2, amplifier includes that integrated optical fibre device, doped fiber 60 and the pump laser 70 with tail optical fiber constitute one
A fiber amplifier system.
The right end of doped fiber 60 is connect with the left end of the first energy-transmission optic fibre 11 by 81 light path of the first fusion point；Signal swashs
Light and pumping laser are inputted from the left end and right end of doped fiber 60 respectively, and doped fiber absorbs pumping laser and makes signal laser
Amplified；
The tail optical fiber of pump laser 70 is connect with the right end of the second energy-transmission optic fibre 12 by 82 light path of the second fusion point；
Pumping laser by the second energy-transmission optic fibre 12 input, by the second optical fiber collimator 22 collimate emit, then with>
99% transmitance is coupled into the first energy-transmission optic fibre 11 from right to left transmitted through dichroic mirror 30, then by the first optical fiber collimator 21,
Finally it is transferred to doped fiber 60；
Signal laser is inputted from the left end of doped fiber 60, transmits and obtain power amplification to the right, signal laser is by putting
Be transferred to the first energy-transmission optic fibre 11 after big, collimate and emit by the first optical fiber collimator 21, then with>99% reflectivity is by double
Look mirror 30 is incident on band pass filter 40 after reflecting, and band pass filter 40 can filter out Amplified Spontaneous that may be present in signal light
Radiate ASE spectral components, spatial light isolator 50 can ensure the one-way transmission of signal laser, prevent rear class system there may be
Reverse transfers laser.
Pumping laser pumps doped fiber, so that signal laser is amplified, amplified laser is brought out from light extraction to be penetrated.
The above is only several embodiments of the present invention, not any type of limitation is done to the present invention, although this hair
It is bright to be disclosed as above with preferred embodiment, however not to limit the present invention, any person skilled in the art is not taking off
In the range of technical solution of the present invention, makes a little variation using the technology contents of the disclosure above or modification is equal to
Case study on implementation is imitated, is belonged in technical proposal scope.
Claims (8)
1. a kind of integrated optical fibre device, which is characterized in that including：Collimating element, the first energy-transmission optic fibre, dichroic mirror, second pass
It can optical fiber and third energy-transmission optic fibre；
The first end of first energy-transmission optic fibre is signal laser incidence end；
The first end of second energy-transmission optic fibre is pumping laser incidence end；
After the pumping laser couples after dichroic mirror transmission with the signal laser, the signal laser is through described double-colored
After mirror reflection the integrated optical fibre device is spread out of from the first end of the third energy-transmission optic fibre；
The collimating element is connect with first energy-transmission optic fibre, the second energy-transmission optic fibre and third energy-transmission optic fibre optics respectively；
The dichroic mirror passes light path under with the second end of the third energy-transmission optic fibre and connect, described in the signal laser process
Lower biography light path is transmitted to the third energy-transmission optic fibre；
It is described down pass light path include：Band pass filter and spatial light isolator, the band pass filter go out with the dichroic mirror
The light path connection of light end；The light extraction end of the band pass filter is connect with the spatial light isolator light path；The space is optically isolated
The light extraction end of device is connect with the third energy-transmission optic fibre light path.
2. integrated optical fibre device according to claim 1, which is characterized in that the collimating element includes：First optical fiber
Collimator, the second optical fiber collimator and third optical fiber collimator, first optical fiber collimator and first energy-transmission optic fibre
Second end optics connects；
Second optical fiber collimator is connect with the second end optics of second energy-transmission optic fibre；
The third optical fiber collimator is connect with the second end optics of the third energy-transmission optic fibre.
3. integrated optical fibre device according to claim 1, which is characterized in that the integrated optical fibre device further includes
Three optical fiber collimators, the third optical fiber collimator are connect with the second end optics of the third energy-transmission optic fibre；The spatial light
The light extraction end of isolator is connect with the third optical fiber collimator light path.
4. integrated optical fibre device according to claim 1, which is characterized in that the band pass filter can pass through laser
Wavelength is λ0± Δ λ, wherein λ0For the centre wavelength of the signal laser, Δ λ is definite value.
5. integrated optical fibre device according to claim 4, which is characterized in that the Δ λ is 1~10nm.
6. integrated optical fibre device according to claim 1, which is characterized in that the dichroic mirror is to transmitting to the right laser
Reflectivity>99%；The dichroic mirror to transmitting the transmissivity of laser to the left>99%.
7. a kind of fiber amplifier, which is characterized in that including integrated optical fiber device such as according to any one of claims 1 to 6
Part, doped fiber, signal laser source and pump laser；The signal laser source is connect with the doped fiber light path, described
Doped fiber is connect with the signal laser incidence end welding of the integrated optical fibre device；The pump laser is integrated with described
Change the pumping laser incidence end welding connection of optical fibre device.
8. fiber amplifier according to claim 7, which is characterized in that the fiber amplifier further includes the first fusion point
With the second fusion point, the signal laser incidence end of the integrated optical fibre device is doped fiber, the doped fiber with it is described
First energy-transmission optic fibre is connected by the first fusion point optics；The pumping laser incidence end of the integrated optical fibre device is the
Two energy-transmission optic fibres, the pump laser are connect with second energy-transmission optic fibre by the second fusion point optics.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810495009.2A CN108448372B (en) | 2018-05-22 | 2018-05-22 | Integrated optical fiber device and optical fiber amplifier thereof |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810495009.2A CN108448372B (en) | 2018-05-22 | 2018-05-22 | Integrated optical fiber device and optical fiber amplifier thereof |
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| Publication Number | Publication Date |
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| CN108448372A true CN108448372A (en) | 2018-08-24 |
| CN108448372B CN108448372B (en) | 2024-04-02 |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113161857A (en) * | 2021-03-15 | 2021-07-23 | 武汉光谷航天三江激光产业技术研究院有限公司 | Laser amplifier and pump light double-pass absorption system and method thereof |
| CN113783090A (en) * | 2021-09-10 | 2021-12-10 | 国神光电科技（上海）有限公司 | Optical fiber amplifier |
| CN113783091A (en) * | 2021-09-10 | 2021-12-10 | 国神光电科技（上海）有限公司 | Optical fiber isolator |
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| CN206947723U (en) * | 2017-06-29 | 2018-01-30 | 深圳瑞焱通光子技术有限公司 | A kind of fiber amplifier |
| CN208316015U (en) * | 2018-05-22 | 2019-01-01 | 中国人民解放军国防科技大学 | Integrated optical fiber device and optical fiber amplifier thereof |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN113161857A (en) * | 2021-03-15 | 2021-07-23 | 武汉光谷航天三江激光产业技术研究院有限公司 | Laser amplifier and pump light double-pass absorption system and method thereof |
| CN113783090A (en) * | 2021-09-10 | 2021-12-10 | 国神光电科技（上海）有限公司 | Optical fiber amplifier |
| CN113783091A (en) * | 2021-09-10 | 2021-12-10 | 国神光电科技（上海）有限公司 | Optical fiber isolator |
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