CN105652462B - A kind of large-power optical fiber collimator system with cladding light filtering function - Google Patents
A kind of large-power optical fiber collimator system with cladding light filtering function Download PDFInfo
- Publication number
- CN105652462B CN105652462B CN201610042372.XA CN201610042372A CN105652462B CN 105652462 B CN105652462 B CN 105652462B CN 201610042372 A CN201610042372 A CN 201610042372A CN 105652462 B CN105652462 B CN 105652462B
- Authority
- CN
- China
- Prior art keywords
- optical fiber
- collimation lens
- fixture
- end cap
- water
- Prior art date
- 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.)
- Active
Links
Classifications
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B27/00—Optical systems or apparatus not provided for by any of the groups G02B1/00 - G02B26/00, G02B30/00
- G02B27/30—Collimators
-
- 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
- G02B6/26—Optical coupling means
- G02B6/32—Optical coupling means having lens focusing means positioned between opposed fibre ends
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- H05K7/00—Constructional details common to different types of electric apparatus
- H05K7/20—Modifications to facilitate cooling, ventilating, or heating
- H05K7/20218—Modifications to facilitate cooling, ventilating, or heating using a liquid coolant without phase change in electronic enclosures
Abstract
The invention discloses a kind of large-power optical fiber collimator system with cladding light filtering function, including doubly clad optical fiber output tail optical fiber, glass optical fiber end cap and its fixture, collimation lens and packaging system and Water-cooling circulating component；Glass optical fiber end cap and its fixture include glass optical fiber end cap and end cap fixture, and collimation lens and packaging system include collimation lens and collimation lens encapsulation fixture；The tail optical fiber fibre core of double-clad output fibre tail optical fiber is attached with glass optical fiber end cap by welding, and the collimation lens encapsulation fixture in end cap fixture and collimation lens and packaging system is attached by screw thread, and cladding light is filtered out using collimation lens realization；Water-cooling circulating component is connected with collimation lens encapsulation fixture and is cooled down for collimation lens.The present invention can eliminate cladding light influence, improve power handling capability, improve optical-fiber laser delivery efficiency.
Description
Technical field
Present invention relates generally to optical fiber laser fields, and it is accurate to refer in particular to a kind of large-power optical fiber with cladding light filtering function
Straight device system.
Background technology
Optical fiber laser is excellent with high conversion efficiency, good beam quality, compact-sized, easy heat radiation, good operating stability etc.
Point has been widely used for industry and national defence.According to the needs of these applications, people are for optical fiber laser output power
Pursuit it is also higher and higher.In recent years, with the maturation of doubly clad optical fiber pump technology and the improvement of optic fibre manufacture process, light
The output power of fibre laser is also constantly promoted, and the output power of single mode fiber laser has broken through 10KW, for correlator
The power level that part is born also proposed higher requirement.
Optical fiber collimator is basic optical element necessary to optical fiber laser output.It can swash the transmission in optical fiber
Light is converted into the collimated light propagated in space（Less parallel light）, so as to facilitate the Space Coupling of optical-fiber laser and remote biography
It is defeated etc..In many optical passive components, such as optoisolator, wave filter, it is required for using optical fiber collimator.
For the output optical fibre collimator of high power fiber laser, in addition to the requirement under the conditions of being normally applied, also
Ask optical fiber collimator that can bear very high output power.Simultaneously as high power fiber laser and amplifier are universal now
There is the situation of cladding light is remained in output optical fibre, it is necessary to exclude covering in use for the doubly clad optical fiber pump technology of use
The influence of light.
The content of the invention
The technical problem to be solved in the present invention is that：For technical problem existing in the prior art, the present invention provides one
Kind can eliminate the band cladding light filtering function that cladding light influences, improves power handling capability, improving optical-fiber laser delivery efficiency
Large-power optical fiber collimator system.
In order to solve the above technical problems, the present invention uses following technical scheme：
A kind of large-power optical fiber collimator system with cladding light filtering function, including doubly clad optical fiber output tail optical fiber, glass
Glass end caps and its fixture, collimation lens and packaging system and Water-cooling circulating component；The glass optical fiber end cap and its fixture
Including glass optical fiber end cap and end cap fixture, the collimation lens and packaging system include collimation lens and collimation lens packaging clip
Tool；The tail optical fiber fibre core of the double-clad output fibre tail optical fiber is attached with glass optical fiber end cap by welding, the end cap folder
Collimation lens encapsulation fixture in tool and collimation lens and packaging system is attached by screw thread, real using the collimation lens
Now cladding light is filtered out；The Water-cooling circulating component is connected cold for the progress of collimation lens with collimation lens encapsulation fixture
But.
As a further improvement on the present invention：The doubly clad optical fiber output tail optical fiber and glass optical fiber end cap, which are used, has heat conduction
The glue package of property is inside end cap fixture.
As a further improvement on the present invention：The inner surface of the collimation lens encapsulation fixture 31 coats a floor height refractive index
Absorbing material formed high index of refraction layers of absorbent material.
As a further improvement on the present invention：The Water-cooling circulating component leads to including water inlet, inner cycle channel, outer circulation
Road and water outlet, the water cooling outside the circular channels are connected with collimation lens encapsulation fixture, and cooling water is out of the water inlet entrance
Circulation canal, collimation lens packages fixture carries out water-cooled process, subsequently into the outside the circular channels, finally from the water outlet
Mouth discharge.
As a further improvement on the present invention：The water cooling outside the circular channels and collimation lens encapsulation fixture by screw thread and
Glue with thermal conductivity is attached.
Compared with prior art, the advantage of the invention is that：
1st, the large-power optical fiber collimator system with cladding light filtering function of the invention exports tail optical fiber in doubly clad optical fiber
Glass optical fiber end cap is added, improve optical-fiber laser delivery efficiency and power can be born.
2nd, the large-power optical fiber collimator system with cladding light filtering function of the invention, adds cladding light and filters out work(
It can so that this optical fiber collimator can be suitable for optical fiber laser and amplifier with cladding light.
3rd, the large-power optical fiber collimator system with cladding light filtering function of the invention, using spatial filter cladding light,
The area that cladding light filters out is increased, cladding light is improved and filters out ability.
4th, the large-power optical fiber collimator system with cladding light filtering function of the invention adds the water of optical fiber collimator
Cold component improves the ability of collimation lens processing high power laser.
Description of the drawings
Fig. 1 is the general structure schematic diagram of the present invention.
Fig. 2 is that present invention doubly clad optical fiber in concrete application example exports end cap configuration schematic diagram.
Fig. 3 is present invention light propagation principle schematic in glass optical fiber end cap in concrete application example.
Fig. 4 is present invention light propagation principle schematic in optical fiber collimator in concrete application example.
Fig. 5 is present invention Water-cooling circulating component structure diagram in concrete application example.
Marginal data：
11st, tail optical fiber fibre core；14th, core signal light；15th, clad pumping optical；21st, glass optical fiber end cap；22nd, exit facet；23、
End cap fixture；31st, collimation lens encapsulation fixture；32nd, high index of refraction layers of absorbent material；33rd, collimation lens；41st, water cooling outer circulation
Passage；42nd, tie point；43rd, water inlet；44th, inner cycle channel；45th, outside the circular channels；46th, water outlet.
Specific embodiment
The present invention is described in further details below with reference to Figure of description and specific embodiment.
As shown in Figure 1, the large-power optical fiber collimator system with cladding light filtering function of the present invention, including double clad light
Fibre output tail optical fiber, glass optical fiber end cap and its fixture, collimation lens and packaging system and Water-cooling circulating component.Before doubly clad optical fiber
Grade need not do specially treated, can directly be connected with double-clad output fibre tail optical fiber.Glass optical fiber end cap and its fixture include
Glass optical fiber end cap 21 and end cap fixture 23, collimation lens and packaging system include collimation lens 33 and collimation lens encapsulation fixture
31；The tail optical fiber fibre core 11 of double-clad output fibre tail optical fiber is attached with glass optical fiber end cap 21 by welding, doubly clad optical fiber
Tail optical fiber 1 and glass optical fiber end cap 21 are exported all with the good glue package of heat conduction in 23 the inside of end cap fixture；23 He of end cap fixture
Collimation lens encapsulation fixture 31 in collimation lens and packaging system is attached by screw thread, utilizes the realization pair of collimation lens 33
Cladding light filters out；Water cooling outside the circular channels 45 in Water-cooling circulating component by screw thread and are led with collimation lens encapsulation fixture 31
The good glue of heat is attached, and is cooled down for collimation lens 33.
As shown in Fig. 2, for the present invention in concrete application example the structure diagram of glass optical fiber end cap and its fixture.It is first
First, doubly clad optical fiber output tail optical fiber is divested into coat, output end face is cut after cleaning treatment.It will using end cap welding system
Glass optical fiber end cap 21 after cleaning is fused on doubly clad optical fiber output tail optical fiber.Finally, by doubly clad optical fiber output tail optical fiber and
Glass optical fiber end cap 21 is encapsulated in together in end cap fixture 23.Using the good glue of heat conduction during encapsulation, while must
It must ensure that the packaging area coat of tail optical fiber does not destroy.Referring to Fig. 2, there is shown core signal light 14 in doubly clad optical fiber
With the propagation path of clad pumping optical 15.When two kinds of light are after doubly clad optical fiber is entered in glass optical fiber end cap 21, due to
The original waveguiding structure of the two has all destroyed, and will be dissipated in glass optical fiber end cap 21 by respective numerical aperture.Fibre core is believed
The numerical aperture of number light 14 is generally NA=0.06, and corresponding space divergence angle is θ ≈ 0.06；The numerical aperture of clad pumping optical 15
Generally NA=0.46, corresponding space divergence angle are θ ≈ 0.46.Since the two angle of divergence has very big difference, in spatial
It is easily separated in the process.
As shown in figure 3, in concrete application example in glass optical fiber end cap 21 light propagation principle schematic.With fibre core
Exemplified by flashlight 14, using Gaussian beam model, due to 21 refractive index of glass optical fiber end cap and doubly clad optical fiber inner wrap material
Refractive index is consistent, thus with the difference very little of fiber core refractive index material, this allow for flashlight from doubly clad optical fiber export tail optical fiber
Tail optical fiber fibre core 11 enter reflection loss very little during glass optical fiber end cap 21（A points in figure）.When light enters glass
After in end caps 21, since original waveguiding structure has not existed, light will gradually be dissipated along the direction of propagation, such as curve in figure
Shown (close to the launching curve of A points), degree of divergence is determined by fibre core numerical aperture.When light propagation to glass optical fiber end cap 21
During exit facet 22, anti-reflection film process can significantly reduce light echo.But since air refraction can be regarded as 1, thus from glass
End caps 21 need to consider to reflect into the communication process of air.Refraction effect increases the angle of divergence of emergent light, in figure
Shown in curve（Launching curve away from A points）, thus from the point of view of space, the focal position of light has changed to B points by A points.Covering pumps
Pu light 15 has similar propagation law, but since numerical aperture is larger, light communication theory may be employed in analysis.
As shown in figure 4, for the present invention in concrete application example the structure diagram of collimation lens and packaging system.It is first
First, high index of refraction absorbing material is formed in the absorbing material of the inner surface one floor height refractive index of coating of collimation lens encapsulation fixture 31
Layer 32, in order to ensure fully absorbing to clad pumping optical 15, it is also necessary to carry out coarse processing to it.Then, by collimation lens
33 are encapsulated in collimation lens encapsulation fixture 31, and ensure that the focus of collimation lens 33 falls near above-mentioned B points.Finally, will
End cap fixture 23 is attached with collimation lens encapsulation fixture 31 by screw thread.Screw thread has enough length and precision, Ke Yishi
Existing a certain range of adjusting can realize that the collimation of laser exports by adjusting screw thread.
As shown in figure 5, the structure diagram for present invention Water-cooling circulating component in concrete application example.Water-cooling circulating group
Part includes water inlet 43, inner cycle channel 44, outside the circular channels 45 and water outlet 46.Water-cooling circulating system passes through screw thread and collimation
What lens packages fixture 31 linked together, and sealed screw thread and tie point 42 using glue, form water circulation channel.It is led
The operation principle is wanted to be：The cooling water of low temperature from water inlet 43 enter inner cycle channel 44, collimation lens packages fixture 31 into
Row water-cooled process subsequently into outside the circular channels 45, is finally discharged from water outlet 46.
From the foregoing, it will be observed that the present invention is by by 14 He of core signal light in the high power fiber laser output light with cladding light
Clad pumping optical 15 realization be spatially separating, using optical fiber collimator realization cladding light is filtered out, while collimation lens 33 into
Row water cooling realizes high-power signal light output.
In the present invention, the output of high-power double-cladding optical-fiber laser is changed to welding glass light by original direct output
Fine end cap 21 exports.On the one hand, light field dissipates in glass optical fiber end cap 21 after welding glass end caps 21, can effectively increase
Big output end face light field area, so as to reduce optical power density；On the other hand, the output end face of glass optical fiber end cap 21 is using increasing
Permeable membrane processing, improves output light transmission rate, effectively inhibits light echo.
Traditional cladding light, which filters out, is directly handled doubly clad optical fiber, and this mode that filters out is limited in optical fiber
Cladding size, because being filtered out in this way, heat can be accumulated in inner cladding near zone, be difficult to realize at high power
Reason ability.And the present invention filters out mode using space cladding light, to the core signal light 14 and clad pumping optical in output optical fibre
15 disregard, and the two is allowed to be exported simultaneously by glass optical fiber end cap 21.Since the two numerical aperture is widely different, from glass
Glass end caps 21 can be propagated after exporting in space with the different angles of divergence.When core signal light 14 and clad pumping optical 15
After spatial certain distance, the two can separate in space, can at this time again by selectively filtering out clad pumping optical 15
Equally to achieve the purpose that cladding light filters out.But in comparison, this processing mode is completed in space, from inner cladding
Size limits, thus filters out ability with stronger high power.
Further, the present invention carries out water-cooled process to collimation lens in optical fiber collimator 33, is dissipated by collimation lens 33
Heat reduces the distortion of collimation lens 33 under high power conditions, improves the high power ability to bear of optical fiber collimator.
The above is only the preferred embodiment of the present invention, protection scope of the present invention is not limited merely to above-described embodiment,
All technical solutions belonged under thinking of the present invention all belong to the scope of protection of the present invention.It should be pointed out that for the art
For those of ordinary skill, several improvements and modifications without departing from the principles of the present invention should be regarded as the protection of the present invention
Scope.
Claims (4)
1. a kind of large-power optical fiber collimator system with cladding light filtering function, which is characterized in that defeated including doubly clad optical fiber
Go out tail optical fiber, glass optical fiber end cap and its fixture, collimation lens and packaging system and Water-cooling circulating component；The glass optical fiber end cap
And its fixture includes glass optical fiber end cap（21）With end cap fixture（23）, the collimation lens and packaging system include collimation lens
（33）Fixture is encapsulated with collimation lens（31）；The tail optical fiber fibre core of the double-clad output fibre tail optical fiber（11）With glass optical fiber end cap
（21）It is attached by welding, the end cap fixture（23）Fixture is encapsulated with the collimation lens in collimation lens and packaging system
（31）It is attached by screw thread, utilizes the collimation lens（33）Realization filters out cladding light；The Water-cooling circulating component
Fixture is encapsulated with collimation lens（31）Connection is used for collimation lens（33）It is cooled down；The collimation lens encapsulates fixture（31）
Inner surface coat a floor height refractive index absorbing material formed high index of refraction layers of absorbent material（32）.
2. the large-power optical fiber collimator system according to claim 1 with cladding light filtering function, which is characterized in that institute
State doubly clad optical fiber output tail optical fiber（1）With glass optical fiber end cap（21）With the glue package with thermal conductivity in end cap fixture（23）
The inside.
3. the large-power optical fiber collimator system according to claim 1 or 2 with cladding light filtering function, feature exist
In the Water-cooling circulating component includes water inlet（43）, inner cycle channel（44）, outside the circular channels（45）And water outlet（46）,
The water cooling outside the circular channels（45）Fixture is encapsulated with collimation lens（31）Connection, cooling water is from the water inlet（43）Into interior
Circulation canal（44）, collimation lens packages fixture（31）Water-cooled process is carried out, subsequently into the outside the circular channels（45）, most
Afterwards from the water outlet（46）Discharge.
4. the large-power optical fiber collimator system according to claim 3 with cladding light filtering function, which is characterized in that institute
State water cooling outside the circular channels（45）Fixture is encapsulated with collimation lens（31）It is attached by screw thread and the glue with thermal conductivity.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610042372.XA CN105652462B (en) | 2016-01-22 | 2016-01-22 | A kind of large-power optical fiber collimator system with cladding light filtering function |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610042372.XA CN105652462B (en) | 2016-01-22 | 2016-01-22 | A kind of large-power optical fiber collimator system with cladding light filtering function |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105652462A CN105652462A (en) | 2016-06-08 |
| CN105652462B true CN105652462B (en) | 2018-05-25 |
Family
ID=56486401
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610042372.XA Active CN105652462B (en) | 2016-01-22 | 2016-01-22 | A kind of large-power optical fiber collimator system with cladding light filtering function |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105652462B (en) |
Families Citing this family (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107689541A (en) * | 2017-10-25 | 2018-02-13 | 中国人民解放军国防科技大学 | Defocusing compensation type high-power narrow-linewidth linearly polarized optical fiber laser generation system |
| CN107861193A (en) * | 2017-11-07 | 2018-03-30 | 大族激光科技产业集团股份有限公司 | Optical-fiber bundling device and preparation method thereof, abatement optical fiber return reflective method and semiconductor laser |
| IL256688B (en) | 2018-01-01 | 2020-03-31 | Wormser Daniel | Endcap, assembly and method for improving accuracy in fiber-endcap-fixture alignment |
| CN109604845A (en) * | 2018-11-26 | 2019-04-12 | 苏州钋镭自动化科技有限公司 | A kind of extinction cooling system of the optical entrance for laser cutting head |
| US11828987B2 (en) * | 2018-12-13 | 2023-11-28 | Kla Corporation | Axially adjusted, non-rotating barrel fiber collimator |
| CN110471144B (en) * | 2019-08-07 | 2020-11-03 | 北京工业大学 | Aberration-eliminating myriawatt-level optical fiber connector |
| TWI723942B (en) * | 2020-09-02 | 2021-04-01 | 國家中山科學研究院 | High-power all-fiber type anti-reflection device |
| CN113050225A (en) * | 2021-06-02 | 2021-06-29 | 北京凯普林光电科技股份有限公司 | Optical fiber connector structure with anti-reflection function |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102902030A (en) * | 2011-07-29 | 2013-01-30 | 山西飞虹激光科技有限公司 | Energy transfer optical cable for high-power laser transmission |
| CN103490273A (en) * | 2013-10-10 | 2014-01-01 | 武汉锐科光纤激光器技术有限责任公司 | High-power optical fiber transmission system |
| CN103676051A (en) * | 2013-11-29 | 2014-03-26 | 深圳市创鑫激光技术有限公司 | Myriawatt-level high-power optical fiber end cap |
| CN203519869U (en) * | 2013-10-09 | 2014-04-02 | 深圳朗光科技有限公司 | Fiber packaging structure |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102011087854B4 (en) * | 2011-12-07 | 2022-07-21 | Jenoptik Optical Systems Gmbh | Light guide with an optical fiber and a mode stripper |
-
2016
- 2016-01-22 CN CN201610042372.XA patent/CN105652462B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102902030A (en) * | 2011-07-29 | 2013-01-30 | 山西飞虹激光科技有限公司 | Energy transfer optical cable for high-power laser transmission |
| CN203519869U (en) * | 2013-10-09 | 2014-04-02 | 深圳朗光科技有限公司 | Fiber packaging structure |
| CN103490273A (en) * | 2013-10-10 | 2014-01-01 | 武汉锐科光纤激光器技术有限责任公司 | High-power optical fiber transmission system |
| CN103676051A (en) * | 2013-11-29 | 2014-03-26 | 深圳市创鑫激光技术有限公司 | Myriawatt-level high-power optical fiber end cap |
Also Published As
| Publication number | Publication date |
|---|---|
| CN105652462A (en) | 2016-06-08 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN105652462B (en) | A kind of large-power optical fiber collimator system with cladding light filtering function | |
| CN105490141B (en) | A kind of integrated high-power optical-fiber laser output system with cladding light filtering function | |
| CN102255227B (en) | Fiber cladding light filter and manufacturing method thereof | |
| CN105449499B (en) | A kind of fibre cladding light filtering method using waveguide capillary | |
| CN107462323A (en) | A kind of high-capacity optical fiber laser light echo monitors optical module | |
| CN206020712U (en) | Optical fiber is passed can part | |
| CN105511088B (en) | Large-power optical fiber output system with cladding light filtering function | |
| CN109143475B (en) | Coupling lens system | |
| CN103701023A (en) | Cladding light filter for double-cladding optical fiber and preparation method for cladding light filter | |
| CN207472421U (en) | A kind of high-capacity optical fiber laser light echo monitors optical module | |
| CN103762484A (en) | Cladding optical attenuator and manufacturing method thereof | |
| CN108808430A (en) | A kind of fibre cladding luminous power device for stripping and process for stripping | |
| CN105261918B (en) | A kind of pumping coupler automatically switching radiating mode | |
| CN205038369U (en) | Novel high power optical collimator structure | |
| CN105572802A (en) | Fiber welding point processing method | |
| CN203950059U (en) | A kind of high-power fiber bundling device | |
| CN103513427B (en) | A kind of laser instrument producing annular indication light | |
| CN207908739U (en) | A kind of high-power optical fiber coupler encapsulating structure part | |
| CN1323304C (en) | Multi mould multi-optical fiber power coupler and its preparation method | |
| RU2031420C1 (en) | Device to transmit powerful laser radiation | |
| CN208241073U (en) | A kind of fibre cladding optical power device for stripping | |
| US9457415B2 (en) | Water removing method, optical fiber soldering method, and semiconductor laser module manufacturing method | |
| CN105244737A (en) | Pump coupler for hectowatt fiber laser | |
| CN111562651A (en) | High-power optical fiber combiner | |
| US20070269173A1 (en) | Multiple numerical aperture fiber optics array |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |