CN106324759A - (N+1)*1 type side pumping optical fiber coupler based on triple-cladding fiber - Google Patents
(N+1)*1 type side pumping optical fiber coupler based on triple-cladding fiber Download PDFInfo
- Publication number
- CN106324759A CN106324759A CN201610914942.XA CN201610914942A CN106324759A CN 106324759 A CN106324759 A CN 106324759A CN 201610914942 A CN201610914942 A CN 201610914942A CN 106324759 A CN106324759 A CN 106324759A
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- Prior art keywords
- fiber
- optical fiber
- cone
- pumping
- fibre
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Classifications
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- 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
- G02B6/262—Optical details of coupling light into, or out of, or between fibre ends, e.g. special fibre end shapes or associated optical elements
-
- 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
- G02B6/245—Removing protective coverings of light guides before coupling
-
- 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
- G02B6/255—Splicing of light guides, e.g. by fusion or bonding
- G02B6/2552—Splicing of light guides, e.g. by fusion or bonding reshaping or reforming of light guides for coupling using thermal heating, e.g. tapering, forming of a lens on light guide ends
-
- 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
- H01S3/09—Processes or apparatus for excitation, e.g. pumping
- H01S3/091—Processes or apparatus for excitation, e.g. pumping using optical pumping
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- Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- General Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Electromagnetism (AREA)
- Plasma & Fusion (AREA)
- Optical Couplings Of Light Guides (AREA)
Abstract
The invention discloses an (N+1)*1 type side pumping optical fiber coupler based on triple-cladding fiber, wherein the (N+1)*1 type side pumping optical fiber coupler is composed of N multimode pumping fibers through specific treatment and a triple-cladding signal fiber. N multimode pumping fibers through specific treatment has following features: the coating layer in the middle of each fiber is stripped and subjected to specific tapering treatment. After finishing tapering, the fiber is cut off at the tapering waist;the length of tapering area and the size of the tapering waist radius meet the loss condition of low transmission. The triple-cladding signal fiber comprises a fiber core, a first inner cladding, a second inner cladding and a specific structure of an outer cladding which can prevent the leakage of signal light effectively. When the device works, a (N+1)*1 type side pumping optical fiber with high coupling efficiency and low signal light insertion loss can be formed by fitting N multimode pumping fibers through coating stripping and tapering treatment and the triple-cladding signal fiber effectively.
Description
Technical field
The invention discloses a kind of (N+1) × 1 based on triply coated fiber type profile pump fiber coupler, belong to laser
Technical field.
Background technology
Pumping coupler directly affects the most defeated of laser instrument as the core devices of optical fiber laser, its performance parameter
Go out power and beam quality etc..For the pumped fiber coupled apparatus of high-power full-optical-fiber laser, all at the highest power bar
Using under part, its coupling efficiency must be the highest, and loss must be the least, and the power born must be very big, and, the way of input light
Also need to the most.Under the most numerous maximum conditions require, make pump coupling device and the power combing of high-quality
Device has higher difficulty, but, it is achieved mode the most varied.Come from the development trend of high power fiber laser
See, the most also require that pump coupling device, while by coupling pump light to inner cladding, does not affects and damages flashlight as far as possible
Fine core structure.
The present invention is by through drawing N root multimode pumping optical fiber that cone processes and the triple clad that one section of centre has divested coat to tie
Structure signal optical fibre forms, and this structure makes bonder achieve high coupling efficiency and extremely low flashlight insertion loss.This
The meaning of invention is to be carried by the side pumping coupler of independent research high pumping coupling efficiency and low signal light Insertion Loss
The integral performance parameter of high optical fiber laser, thus the production domesticization for high-capacity optical fiber laser steps essential step.
Summary of the invention
It is an object of the invention to propose the type profile pump optical fiber coupling of a kind of (N+1) × 1 based on triply coated fiber
Device, this bonder has high coupling efficiency and extremely low flashlight insertion loss.
For achieving the above object, the technical solution used in the present invention is a kind of based on triply coated fiber (N+1) × 1 type side
Face-pumping fiber coupler, the present invention is by through drawing N root multimode pumping optical fiber that cone processes and one section of centre to divest coat
Triple clad structure signal optical fibre composition.Through the N root multimode pumping optical fiber of particular procedure through following process, every optical fiber warp
Crossing and draw cone to process, the optical fiber after drawing cone to process blocks at cone waist, draws cone section length that cone processes and bores the big of waist radius
Little meet low transmission loss condition.
Described triple clad signal optical fibre has fibre core, the first inner cladding, the second inner cladding and the special construction of surrounding layer, energy
Enough it is effectively prevented the leakage of flashlight, and the coat of the mid portion of triply coated fiber is stripped.
The invention discloses a kind of (N+1) × 1 based on triply coated fiber type profile pump fiber coupler.This invention by
Through drawing N root multimode pumping optical fiber that cone processes and the triple clad structure signal optical fibre that one section of centre has divested coat to form,
This structure makes bonder achieve high coupling pump light efficiency and extremely low flashlight insertion loss.
Accompanying drawing explanation
Fig. 1 is the internal structure schematic diagram of side pumping coupler of the present invention.
Fig. 2 is the overall appearance schematic diagram of side pumping coupler of the present invention.
In figure: 1, pumping optical fiber fibre core, 2, pumping optical fiber covering, 3, signal optical fibre fibre core, 4, bag in signal optical fibre first
Layer, 5, signal optical fibre the second inner cladding, 6, pumping optical fiber surrounding layer.
Detailed description of the invention
The present invention is further described below in conjunction with the accompanying drawings.
As depicted in figs. 1 and 2, the present invention includes that N root multimode pumping optical fiber and an interlude have divested the three of coat
The signal optical fibre of cladding structure；Pumping optical fiber is made up of pumping optical fiber fibre core 1 and pumping optical fiber covering 2, and pumping optical fiber fibre core 2 wraps
It is rolled in the surface of pumping optical fiber fibre core 1；Signal optical fibre is by signal optical fibre fibre core 3, signal optical fibre the first inner cladding 4, signal optical fibre
Second inner cladding 5 and pumping optical fiber surrounding layer 6 form, and signal optical fibre the first inner cladding 4 is wrapped in the appearance of signal optical fibre fibre core 3
Face, signal optical fibre the second inner cladding 5 is wrapped in the outer surface of signal optical fibre the first inner cladding 4, and pumping optical fiber surrounding layer 6 is wrapped in
The outside of signal optical fibre the second inner cladding 5；Divest the pumping optical fiber after coat to first pass around and draw cone to process, then will draw at cone
The surrounding layer of Li Houzhui district and signal optical fibre divests part and fits, composition (N+1) × 1 type side pumping coupler.
Every pumping optical fiber is through drawing cone to process, and the pumping optical fiber after drawing cone to process blocks at cone waist, draws at cone
The cone section length of reason and the size of cone waist radius meet low transmission loss condition.
The operation principle of the present invention: the pump light injecting multimode pumping fiber core 1 passes in the cone district of multimode pumping optical fiber
Time defeated, the angle of divergence can be gradually increased, and the most no longer meets total reflection condition, thus at multimode pumping optical fiber and triply coated fiber
Abutting edge is coupled in the second inner cladding 5 of triply coated fiber.Under cone section length and cone waist radius, it is coupled to triply coated fiber
Pump light meet covering transmission conditions.On the other hand, during preparing bonder, triply coated fiber only has miniature deformation,
Therefore flashlight low-loss transmission in signal optical fibre fibre core 3.Especially since there is the first bag outside the fibre core of triply coated fiber
Layer, therefore can preferably be tied to signal beams in fibre core.This structure pumping coupler can obtain high coupling efficiency
With extremely low flashlight insertion loss.
Particular cone section length and cone waist radius make this bonder have the coupling efficiency higher than 99% and the signal less than 1%
Light insertion loss.
Claims (4)
1. (N+1) × 1 based on a triply coated fiber type profile pump fiber coupler, it is characterised in that: this profile pump
Fiber coupler includes that N root multimode pumping optical fiber and interlude have divested the signal optical fibre of the triple clad structure of coat；
Pumping optical fiber is made up of pumping optical fiber fibre core (1) and pumping optical fiber covering (2), and pumping optical fiber fibre core (2) is wrapped in pumping optical fiber
The surface of fibre core (1)；Signal optical fibre is by signal optical fibre fibre core (3), signal optical fibre the first inner cladding (4), signal optical fibre second
Covering (5) and pumping optical fiber surrounding layer (6) composition, signal optical fibre the first inner cladding (4) is wrapped in outside signal optical fibre fibre core (3)
Surface, signal optical fibre the second inner cladding (5) is wrapped in the outer surface of signal optical fibre the first inner cladding (4), pumping optical fiber surrounding layer
(6) outside of signal optical fibre the second inner cladding (5) it is wrapped in；Divest the pumping optical fiber after coat to first pass around and draw cone to process,
Then fit drawing the cone process Hou Zhui district surrounding layer with signal optical fibre to divest part, composition type side, (N+1) × 1 pump
Pu bonder.
A kind of (N+1) × 1 based on triply coated fiber the most according to claim 1 type profile pump fiber coupler, its
It is characterised by: every pumping optical fiber is through drawing cone to process, and the pumping optical fiber after drawing cone to process blocks at cone waist, draws at cone
The cone section length of reason and the size of cone waist radius meet low transmission loss condition.
A kind of (N+1) × 1 based on triply coated fiber the most according to claim 1 type profile pump fiber coupler, its
Being characterised by: inject the pump light of multimode pumping fiber core (1) when transmitting in the cone district of multimode pumping optical fiber, the angle of divergence can be by
Cumulative greatly, the most no longer meet total reflection condition, thus be coupled to three in the abutting edge of multimode pumping optical fiber and triply coated fiber
In second inner cladding (5) of cladded-fiber；Under cone section length and cone waist radius, the pump light being coupled to triply coated fiber meets
Covering transmission conditions；On the other hand, during preparing bonder, triply coated fiber only has miniature deformation, and therefore flashlight exists
Low-loss transmission in signal optical fibre fibre core (3)；Especially since there is the first covering outside the fibre core of triply coated fiber, therefore may be used
Preferably signal beams is tied in fibre core；This structure pumping coupler can obtain high coupling efficiency and extremely low letter
Number light insertion loss.
A kind of (N+1) × 1 based on triply coated fiber the most according to claim 1 type profile pump fiber coupler, its
It is characterised by: cone section length and cone waist radius make this bonder have the coupling efficiency higher than 99% and the flashlight less than 1%
Insertion loss.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610914942.XA CN106324759A (en) | 2016-10-20 | 2016-10-20 | (N+1)*1 type side pumping optical fiber coupler based on triple-cladding fiber |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610914942.XA CN106324759A (en) | 2016-10-20 | 2016-10-20 | (N+1)*1 type side pumping optical fiber coupler based on triple-cladding fiber |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN106324759A true CN106324759A (en) | 2017-01-11 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610914942.XA Pending CN106324759A (en) | 2016-10-20 | 2016-10-20 | (N+1)*1 type side pumping optical fiber coupler based on triple-cladding fiber |
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| CN (1) | CN106324759A (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107017551A (en) * | 2017-05-27 | 2017-08-04 | 中国工程物理研究院应用电子学研究所 | It is a kind of（2+1）Melt the method for packing of tapered fiber pump combiner in × 1 side |
| CN108462028A (en) * | 2018-04-17 | 2018-08-28 | 中国工程物理研究院激光聚变研究中心 | Side pump-type fibre pump signal bundling device and preparation method thereof |
| CN109521524A (en) * | 2018-12-17 | 2019-03-26 | 大族激光科技产业集团股份有限公司 | Profile pump bundling device and preparation method thereof |
| CN110323660A (en) * | 2019-07-04 | 2019-10-11 | 江苏亨通光纤科技有限公司 | A kind of anti-return light all-fiber devices |
| CN114421266A (en) * | 2021-12-22 | 2022-04-29 | 中国人民解放军93236部队 | Side pumping beam combiner based on chiral coupling fiber core optical fiber and manufacturing method |
| CN114488400A (en) * | 2022-02-19 | 2022-05-13 | 中红外激光研究院(江苏)有限公司 | High-brightness optical fiber beam combiner based on evanescent wave coupling and preparation method thereof |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4815079A (en) * | 1987-12-17 | 1989-03-21 | Polaroid Corporation | Optical fiber lasers and amplifiers |
| US20090251770A1 (en) * | 2006-11-24 | 2009-10-08 | Gsi Group Limited | Cladding pumped fibre laser with a high degree of pump isolation |
| CN102891429A (en) * | 2011-12-30 | 2013-01-23 | 清华大学 | Optical fiber-side pump coupler and manufacturing method thereof |
| CN103185919A (en) * | 2011-12-30 | 2013-07-03 | 清华大学 | Coupling device of multimode optical fibers with cladding |
-
2016
- 2016-10-20 CN CN201610914942.XA patent/CN106324759A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4815079A (en) * | 1987-12-17 | 1989-03-21 | Polaroid Corporation | Optical fiber lasers and amplifiers |
| US20090251770A1 (en) * | 2006-11-24 | 2009-10-08 | Gsi Group Limited | Cladding pumped fibre laser with a high degree of pump isolation |
| CN102891429A (en) * | 2011-12-30 | 2013-01-23 | 清华大学 | Optical fiber-side pump coupler and manufacturing method thereof |
| CN103185919A (en) * | 2011-12-30 | 2013-07-03 | 清华大学 | Coupling device of multimode optical fibers with cladding |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107017551A (en) * | 2017-05-27 | 2017-08-04 | 中国工程物理研究院应用电子学研究所 | It is a kind of（2+1）Melt the method for packing of tapered fiber pump combiner in × 1 side |
| CN108462028A (en) * | 2018-04-17 | 2018-08-28 | 中国工程物理研究院激光聚变研究中心 | Side pump-type fibre pump signal bundling device and preparation method thereof |
| CN108462028B (en) * | 2018-04-17 | 2023-11-14 | 中国工程物理研究院激光聚变研究中心 | Side pump type optical fiber pumping signal beam combiner and preparation method thereof |
| CN109521524A (en) * | 2018-12-17 | 2019-03-26 | 大族激光科技产业集团股份有限公司 | Profile pump bundling device and preparation method thereof |
| CN110323660A (en) * | 2019-07-04 | 2019-10-11 | 江苏亨通光纤科技有限公司 | A kind of anti-return light all-fiber devices |
| CN114421266A (en) * | 2021-12-22 | 2022-04-29 | 中国人民解放军93236部队 | Side pumping beam combiner based on chiral coupling fiber core optical fiber and manufacturing method |
| CN114488400A (en) * | 2022-02-19 | 2022-05-13 | 中红外激光研究院(江苏)有限公司 | High-brightness optical fiber beam combiner based on evanescent wave coupling and preparation method thereof |
| CN114488400B (en) * | 2022-02-19 | 2023-01-24 | 中红外激光研究院(江苏)有限公司 | High-brightness optical fiber beam combiner based on evanescent wave coupling and preparation method thereof |
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Application publication date: 20170111 |