CN105676354A - Novel high-power fiber mode stripper capable of polishing and grinding lateral side of fiber - Google Patents
Novel high-power fiber mode stripper capable of polishing and grinding lateral side of fiber Download PDFInfo
- Publication number
- CN105676354A CN105676354A CN201610226998.6A CN201610226998A CN105676354A CN 105676354 A CN105676354 A CN 105676354A CN 201610226998 A CN201610226998 A CN 201610226998A CN 105676354 A CN105676354 A CN 105676354A
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- fiber
- side polishing
- mode stripper
- cladding
- optical fiber
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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
- G02B6/245—Removing protective coverings of light guides before coupling
Abstract
The invention discloses a novel high-power fiber mode stripper capable of polishing and grinding the lateral side of a cable. A double-cladding fiber comprises a fiber core, an internal cladding and an external cladding, a fiber stripping segment which the external cladding is stripped from and the internal cladding is exposed is formed on the double-cladding fiber, the fiber stripping segment includes at least one position where part of the internal cladding needs to be removed via lateral-side polishing and grinding to form a polishing and grinding area, and the fiber stripping segment and part, close to the two ends of the fiber stripping segment, of the double-cladding fiber are packaged with a packaging piece. The mode stripper polishes and grinds the lateral side of the double-cladding fiber from which the external cladding is removed to form the polishing and grinding area, the incident angle is increased, total reflection condition is destroyed, light of the claddings can leak to the external environment, use of organic glue is avoided, the high-power fiber mode stripper can bear higher temperature for a long time, the stability and service life of a product are improved, the attenuation efficiency of optical power of the claddings can be adjusted, and the laser transmission efficiency and the light beam quality are improved.
Description
Technical field
The present invention relates to field of high power fiber lasers, be specifically related to a kind of novel Side polishing fiber high-power fiber mode stripper.
Background technology
Doubly clad optical fiber is widely used in the field such as optical fiber laser and fiber amplifier. Pump light enters optical fiber inner cladding by bundling device, is absorbed by fibre core in the process of transmission. Formed by the anti-grating feedback of height and be excited to shake, thus producing laser. Limited gain fibre length causes that pump light is not fully absorbed, and produces remaining pump light; Meanwhile, fusion point place also has part signal light and leaks in covering. The different light of both wavelength all can be propagated in covering, forms cladding light. The existence of cladding light makes Laser beam energy distribution not concentrate, and has a strong impact on the beam quality of laser and the job stability of laser instrument, thus affecting Laser Processing effect. Particularly in high-capacity optical fiber laser, cladding light power is too big even can be produced to destroy to subsequent device. Therefore remove cladding light to be very important.
Current high-power fiber mode stripper technology of preparing, more is after being divested by the surrounding layer of doubly clad optical fiber, organic glue of a floor height refractive index it is coated with at inner cladding outer surface single hop or multistage, or segmentation divests inner cladding, destroy original total reflection condition, make cladding light can leak in space outerpace. Owing to the organic glue of high index of refraction is organic polymer, it is possible to the temperature born for a long time is limited. Using under long-time hot conditions, can cause that glue character changes, light absorbs to be increased; And temperature raises, the long-term working stability of entail dangers to product. It addition, for the paraxial cladding light of small divergence angle, charge stripping efficiency is relatively low, and life-time service exists potential safety hazard.
Summary of the invention
In order to solve above-mentioned technical problem, the present invention proposes a kind of novel Side polishing fiber high-power fiber mode stripper, it can be avoided that consider the high temperature impact on organic high index of refraction glue, improve stability and the service life of product, and the extinction efficiency of scalable cladding light power, improve efficiency of transmission and the beam quality of laser.
The technical scheme is that and be achieved in that:
A kind of novel Side polishing fiber high-power fiber mode stripper, including doubly clad optical fiber, described doubly clad optical fiber includes fiber core, inner cladding and surrounding layer, described doubly clad optical fiber is formed and has peeled off surrounding layer and expose the optical fiber ablation section of inner cladding, in described optical fiber ablation section, at least one place removes part inner cladding by Side polishing fiber, form rubbing down district, in described optical fiber ablation section and on the doubly clad optical fiber at its two ends, be encapsulated with a packaging part.
Further, described optical fiber ablation section there are a place or two places remove part inner cladding by Side polishing fiber, form one or two described rubbing down district.
Further, two axially spaced arrangements in described rubbing down district, or two circumferentially spaced arrangements in described rubbing down district.
Further, described optical fiber ablation section bends to circular arc, and described rubbing down district is plane, and described packaging part is the glass bushing of bending.
Further, described optical fiber ablation section is vertical bar shape, and described rubbing down district is concave shape, and described packaging part is the glass bushing of vertical bar shape.
Further, the radial section in described rubbing down district is D-shaped or falcate.
Further, the thickness remaining inner cladding is not less than the 1/4 of inner cladding thickness.
Further, described rubbing down district is coated with refractive index more than the inorganic optical coating anti-reflection film of inner cladding or organic glue.
Further, described inorganic optical coating anti-reflection film is SiO2、Al2O3、Ti2O3。
The invention has the beneficial effects as follows: the present invention provides a kind of novel Side polishing fiber high-power fiber mode stripper, by the doubly clad optical fiber removing surrounding layer is carried out Side polishing fiber process, form rubbing down district, increase incident angle, destroy total reflection condition, therefore cladding light can be leaked in external environment condition, thus avoiding using organic glue, enables high-power fiber mode stripper to bear higher temperature for a long time. It is also preferred that the left by the thickness regulating rubbing down optical fiber residue inner cladding, it is possible to what control cladding light divests efficiency, it is preferred that the thickness of residue inner cladding is not less than the 1/4 of inner cladding thickness. It is also preferred that the left the inorganic optical coating anti-reflection film of high index of refraction can be coated with in Side polishing fiber district, such as Al2O3, Ti2O3, SiO2 etc., by regulating the refractive index of coat material, the extinction efficiency of cladding light can be controlled. It is also preferred that the left also can be coated with organic glue of high index of refraction in Side polishing fiber district, the serial glue such as MY-146, MY-147 such as MYPolymer company, by changing the refractive index of coat material, control the extinction efficiency of cladding light. Glass bushing is in order to protect high-power fiber mode stripper.
Accompanying drawing explanation
Fig. 1 is the structural representation of novel Side polishing fiber high-power fiber mode stripper in the embodiment of the present invention 1;
Fig. 2 is Tu1Zhong rubbing down district longitudinal section view;
Fig. 3 is a structural representation of novel Side polishing fiber high-power fiber mode stripper in the embodiment of the present invention 2;
Fig. 4 is another structural representation of novel Side polishing fiber high-power fiber mode stripper in the embodiment of the present invention 2;
Fig. 5 is Tu4Zhong rubbing down district longitudinal section view;
Fig. 6 is the structural representation of novel Side polishing fiber high-power fiber mode stripper in the embodiment of the present invention 3;
In conjunction with accompanying drawing, make the following instructions:
1 doubly clad optical fiber 11 fiber core
12 inner cladding 13 surrounding layers
14 optical fiber ablation section 15 rubbing down districts
2 packaging parts
Detailed description of the invention
In order to be more clearly understood that the technology contents of the present invention, describing in detail especially exemplified by following example, it limits the scope of the invention only for purpose of being best understood from present disclosure.
Embodiment 1
As depicted in figs. 1 and 2, a kind of novel Side polishing fiber high-power fiber mode stripper, including doubly clad optical fiber 1, described doubly clad optical fiber includes fiber core 11, inner cladding 12 and surrounding layer 13, described doubly clad optical fiber is formed and has peeled off surrounding layer and expose the optical fiber ablation section 14 of inner cladding, described optical fiber ablation section there is a place remove part inner cladding by Side polishing fiber, form a rubbing down district 15, in described optical fiber ablation section and on the doubly clad optical fiber at its two ends, be encapsulated with a packaging part 2; Described optical fiber ablation section is vertical bar shape, and described rubbing down district is concave shape, and described packaging part is the glass bushing of vertical bar shape. So, by the doubly clad optical fiber removing surrounding layer is carried out Side polishing fiber process, form rubbing down district, increase incident angle, destroy total reflection condition, therefore cladding light can be leaked in external environment condition, thus avoiding using organic glue, enables high-power fiber mode stripper to bear higher temperature for a long time.
Preferably, the radial section in described rubbing down district is D-shaped or falcate. Preferred D-shaped in the present embodiment, referring to Fig. 2;
Preferably, the thickness remaining inner cladding is not less than the 1/4 of inner cladding thickness. So, by regulating the thickness of rubbing down optical fiber residue inner cladding, it is possible to what control cladding light divests efficiency.
Preferably, can being coated with the inorganic optical coating anti-reflection film of high index of refraction in Side polishing fiber district, such as Al2O3, Ti2O3, SiO2 etc., but be limited to this, the oxide coating of other resistant to elevated temperatures highs index of refraction also may be used. By regulating the refractive index of coat material, the extinction efficiency of cladding light can be controlled.
Preferably, organic glue of high index of refraction also can be coated with in Side polishing fiber district, the serial glue such as MY-146, MY-147 such as MYPolymer company, by changing the refractive index of coat material, control the extinction efficiency of cladding light.
Embodiment 2
As shown in Figure 3, the present embodiment 2 comprises most of technical characteristic of novel Side polishing fiber high-power fiber mode stripper in embodiment 1, it is distinctive in that, described optical fiber ablation section there are two places remove part inner cladding by Side polishing fiber, define two described rubbing down districts and two axially spaced arrangements in described rubbing down district.
In other embodiments, two described rubbing down districts can also circumferentially spaced arrangement. Referring to Fig. 4 and Fig. 5. further, it is also possible to form multiple rubbing down district in described optical fiber ablation section, so, Side polishing fiber includes single hop or the monolateral Side polishing fiber of multistage, single hop or the polygon Side polishing fiber of multistage.
Embodiment 3
As shown in Figure 6, the present embodiment 3 comprises most of technical characteristic of novel Side polishing fiber high-power fiber mode stripper in embodiment 1, and it is distinctive in that, described optical fiber ablation section bends to circular arc, described rubbing down district is plane, and described packaging part is the glass bushing of bending.
To sum up, the present invention provides a kind of novel Side polishing fiber high-power fiber mode stripper, can effectively divest cladding light by Side polishing fiber, it is to avoid consider the high temperature impact on organic high index of refraction glue, improves stability and the service life of product. Side polishing fiber includes single hop or the monolateral Side polishing fiber of multistage, single hop or the polygon Side polishing fiber of multistage. And adjustment rubbing down optical fiber residue inner cladding thickness can control the efficiency that divests of cladding light, residue inner cladding thickness is not less than the 1/4 of inner cladding diameter. Organic or the inorganic material of different refractivity can also be coated with simultaneously by different preparation methoies in Side polishing fiber district, regulate the extinction efficiency of cladding light power, improve efficiency of transmission and the beam quality of laser.
Above example is with reference to accompanying drawing, to a preferred embodiment of the present invention will be described in detail. Those skilled in the art by carrying out amendment on various forms or change to above-described embodiment, but when without departing substantially from the essence of the present invention, all drops within protection scope of the present invention.
Claims (9)
1. a novel Side polishing fiber high-power fiber mode stripper, including doubly clad optical fiber (1), described doubly clad optical fiber includes fiber core (11), inner cladding (12) and surrounding layer (13), it is characterized in that: described doubly clad optical fiber is formed and has peeled off surrounding layer and expose the optical fiber ablation section (14) of inner cladding, in described optical fiber ablation section, at least one place removes part inner cladding by Side polishing fiber, form rubbing down district (15), in described optical fiber ablation section and on the doubly clad optical fiber at its two ends, be encapsulated with a packaging part (2).
2. novel Side polishing fiber high-power fiber mode stripper according to claim 1, it is characterised in that: described optical fiber ablation section there are a place or two places remove part inner cladding by Side polishing fiber, form one or two described rubbing down district (15).
3. novel Side polishing fiber high-power fiber mode stripper according to claim 2, it is characterised in that: two axially spaced arrangements in described rubbing down district, or two circumferentially spaced arrangements in described rubbing down district.
4. novel Side polishing fiber high-power fiber mode stripper according to claim 1, it is characterised in that: described optical fiber ablation section bends to circular arc, and described rubbing down district is plane, and described packaging part is the glass bushing of bending.
5. novel Side polishing fiber high-power fiber mode stripper according to claim 1, it is characterised in that: described optical fiber ablation section is vertical bar shape, and described rubbing down district is concave shape, and described packaging part is the glass bushing of vertical bar shape.
6. novel Side polishing fiber high-power fiber mode stripper according to claim 5, it is characterised in that: the radial section in described rubbing down district is D-shaped or falcate.
7. novel Side polishing fiber high-power fiber mode stripper according to claim 1, it is characterised in that: the thickness of residue inner cladding is not less than the 1/4 of inner cladding thickness.
8. novel Side polishing fiber high-power fiber mode stripper according to claim 1, it is characterised in that: in described rubbing down district, it is coated with refractive index more than the inorganic optical coating anti-reflection film of inner cladding or organic glue.
9. novel Side polishing fiber high-power fiber mode stripper according to claim 8, it is characterised in that: described inorganic optical coating anti-reflection film is SiO2、Al2O3、Ti2O3。
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610226998.6A CN105676354A (en) | 2016-04-13 | 2016-04-13 | Novel high-power fiber mode stripper capable of polishing and grinding lateral side of fiber |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201610226998.6A CN105676354A (en) | 2016-04-13 | 2016-04-13 | Novel high-power fiber mode stripper capable of polishing and grinding lateral side of fiber |
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| CN105676354A true CN105676354A (en) | 2016-06-15 |
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| CN201610226998.6A Withdrawn CN105676354A (en) | 2016-04-13 | 2016-04-13 | Novel high-power fiber mode stripper capable of polishing and grinding lateral side of fiber |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107069393A (en) * | 2017-06-12 | 2017-08-18 | 中国工程物理研究院激光聚变研究中心 | Cladding power stripper and optical fiber laser |
| CN107453195A (en) * | 2017-09-19 | 2017-12-08 | 浙江师范大学 | High power cladding light stripper |
| CN107845945A (en) * | 2017-11-02 | 2018-03-27 | 武汉锐科光纤激光技术股份有限公司 | High-capacity optical fiber laser mode stripper and preparation method thereof |
| CN112629825A (en) * | 2021-03-05 | 2021-04-09 | 武汉光谷航天三江激光产业技术研究院有限公司 | Device and method for radially measuring stripping efficiency of optical fiber cladding light stripper |
| CN112955793A (en) * | 2018-09-21 | 2021-06-11 | 恩耐公司 | Optical fiber cladding light stripper |
| CN115144954A (en) * | 2022-08-31 | 2022-10-04 | 北京凯普林光电科技股份有限公司 | Cladding light stripper and preparation method thereof |
| US11808973B2 (en) | 2018-09-10 | 2023-11-07 | Nlight, Inc. | Optical fiber splice encapsulated by a cladding light stripper |
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| US20110249935A1 (en) * | 2010-04-12 | 2011-10-13 | Lockheed Martin Corporation | Method and apparatus for in-line fiber-cladding-light dissipation |
| CN102713711A (en) * | 2010-01-15 | 2012-10-03 | 科拉克蒂夫高科技公司 | Double clad optical fiber with sealed stripped portion |
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| CN105449499A (en) * | 2015-12-11 | 2016-03-30 | 中电科天之星激光技术（上海）有限公司 | Filtering method for optical fiber cladding layer light by utilizing waveguide capillary |
| CN205562861U (en) * | 2016-04-13 | 2016-09-07 | 昆山华辰光电科技有限公司 | Novel side is thrown mill high power optic fibre and is shelled mould ware |
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| CN1308396A (en) * | 2000-12-31 | 2001-08-15 | 中国科学院西安光学精密机械研究所 | Regulation-free clad pumped fiber laser and its manufacture |
| CN102713711A (en) * | 2010-01-15 | 2012-10-03 | 科拉克蒂夫高科技公司 | Double clad optical fiber with sealed stripped portion |
| US20110249935A1 (en) * | 2010-04-12 | 2011-10-13 | Lockheed Martin Corporation | Method and apparatus for in-line fiber-cladding-light dissipation |
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| US20140211818A1 (en) * | 2013-01-28 | 2014-07-31 | Kai-Chung Hou | Cladding light stripper and method of manufacturing |
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Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107069393A (en) * | 2017-06-12 | 2017-08-18 | 中国工程物理研究院激光聚变研究中心 | Cladding power stripper and optical fiber laser |
| CN107453195A (en) * | 2017-09-19 | 2017-12-08 | 浙江师范大学 | High power cladding light stripper |
| CN107845945A (en) * | 2017-11-02 | 2018-03-27 | 武汉锐科光纤激光技术股份有限公司 | High-capacity optical fiber laser mode stripper and preparation method thereof |
| CN107845945B (en) * | 2017-11-02 | 2024-04-12 | 武汉锐科光纤激光技术股份有限公司 | Mode stripper for high-power optical fiber laser and manufacturing method thereof |
| US11808973B2 (en) | 2018-09-10 | 2023-11-07 | Nlight, Inc. | Optical fiber splice encapsulated by a cladding light stripper |
| CN112955793A (en) * | 2018-09-21 | 2021-06-11 | 恩耐公司 | Optical fiber cladding light stripper |
| US11575239B2 (en) | 2018-09-21 | 2023-02-07 | Nlight, Inc. | Optical fiber cladding light stripper |
| CN112629825A (en) * | 2021-03-05 | 2021-04-09 | 武汉光谷航天三江激光产业技术研究院有限公司 | Device and method for radially measuring stripping efficiency of optical fiber cladding light stripper |
| CN115144954A (en) * | 2022-08-31 | 2022-10-04 | 北京凯普林光电科技股份有限公司 | Cladding light stripper and preparation method thereof |
| CN115144954B (en) * | 2022-08-31 | 2023-01-03 | 北京凯普林光电科技股份有限公司 | Cladding light stripper and preparation method thereof |
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Application publication date: 20160615 |