CN1259584C - Assembling type iso-film double optical fiber head and its producing method - Google Patents
Assembling type iso-film double optical fiber head and its producing method Download PDFInfo
- Publication number
- CN1259584C CN1259584C CN 200410074326 CN200410074326A CN1259584C CN 1259584 C CN1259584 C CN 1259584C CN 200410074326 CN200410074326 CN 200410074326 CN 200410074326 A CN200410074326 A CN 200410074326A CN 1259584 C CN1259584 C CN 1259584C
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- Prior art keywords
- optical fiber
- fiber head
- film
- head
- kapillary
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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
- G02B6/241—Light guide terminations
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Optical Couplings Of Light Guides (AREA)
Abstract
The present invention relates to an assembled different-film dual-optical fiber head and a making method thereof. The assembled different-film dual-optical fiber head has the structure that an optical fiber head of an optical fiber of which the end surface is plated with an antireflection film is arranged in a capillary tube, and the other optical fiber head of an optical fiber of which the end surface is plated with a light filtering film is arranged in the other capillary tube; the optical fiber heads of the capillary tubes plated with different films are assembled to form the different-film dual-optical fiber head. The making method comprises the steps that the side surfaces of the capillary tubes are ground to approach internal holes, and optical fiber is inserted into and adhered to the capillary tube; the end surface of the optical fiber in the capillary tube is polished into a plane surface or an inclined plane, and the polished end surface of the optical fiber is plated with an antireflection film or a light filtering film; the capillary tube plated with the antireflection film and the capillary tube plated with the light filtering film are adhered together along an axial plane surface to form the different-film dual-optical fiber head, the end surfaces of the two optical fibers are consistent, and the space between the edges of the two optical fibers meets design requirements.
Description
Technical field
The present invention relates to the fiber optic communication field technology, mainly be meant a kind of assembling type iso-film double optical fiber head and preparation method thereof.This iso-film double optical fiber head can be applied on the diaphragm-type high-isolation wavelength division multiplexer, also can be applied on the micro-optic device type optical device of various other purposes.
Background technology
Based on optical thin film (filter) technology, in the wavelength division multiplex device (WDM) of optical microlens combination, the double optical fiber head of band heterogeneity film is a kind of key element, more because in optical fiber telecommunications system, the wavelength isolation (Isolation) of this wavelength division multiplex device is required more and more higher, only rely on the diaphragm in lens front to be difficult to reach isolation more than 40 decibels.So in the reflected light path of diaphragm, between low-light lens and fiber end face, increase a diaphragm, or the direct filter coating that plates becomes current solution route on the reflection end fiber end face.Owing to increase diaphragm and can increase the difficulty of assembly technology, stability decreases and must consider " light path coupling " problem of input end fiber and reflection end optical fiber, so it is fairly simple feasible to adopt fiber end face to plate the way of filter coating in order to obtain little insertion loss (Insertion Loss).But because input optical fibre and reflection end optical fiber lean on very closely, at input optical fibre end face plating anti-reflection film (AR coating), and low in complex process, cost height, the yield rate of mirror based fiber optica end face plating filter coating.
Summary of the invention
Purpose of the present invention is intended to overcome problems of the prior art and a kind of assembling type iso-film double optical fiber head and preparation method thereof is provided.
Realize that technical scheme of the present invention is: this assembling type iso-film double optical fiber head comprises optical fiber, kapillary, anti-reflection film, filter coating, and plated film and assembling method, and wherein the primary structure of iso-film double optical fiber head is,
In a kapillary, be provided with the single fiber head of the optical fiber that is coated with anti-reflection film; With
In another kapillary, be provided with the single fiber head of the optical fiber that is coated with filter coating; With
The above-mentioned two single fiber heads that are coated with different films are bolted together are iso-film double optical fiber head.
The structure of above-mentioned iso-film double optical fiber head also comprises:
In the kapillary that a side is polished, be provided with optical fiber and after polishing, be coated with the single fiber head of anti-reflection film at its end face; With
In the kapillary that the another side is polished, be provided with optical fiber and after the polishing of its end face, be coated with the single fiber head of filter coating; With
The above-mentioned two single fiber heads that are coated with different films are bolted together promptly form iso-film double optical fiber head; With
The spacing at the optical fiber edge in two capillaries after the assembly unit should meet design requirement; With
The assembly unit face that has two capillaries of different films is the plane, and the spacing at this plane and kapillary inner fiber edge should meet design requirement; With
Fiber end face is a plane or inclined-plane.
Realize that method for making 1 of the present invention is: get a capillary, in earlier its side being planarized to till the bore edges, insert optical fiber in the kapillary again and be fixed together; Be polished to a plane or inclined-plane (, will plate the optical fiber head of different films and wear into reverse direction) with optical fiber head end face if be polished to the inclined-plane with kapillary and optical fiber composition; Plate anti-reflection film or filter coating respectively with the fiber end face after polishing; Be fixed together vertically with single fiber head that will be coated with anti-reflection film and the single fiber head that is coated with filter coating, become iso-film double optical fiber head, and reach the make peace spacing of two optical fiber of two fiber end faces one and meet design requirement.
The periphery that is inserted with the circular capillaries of optical fiber is processed an axial plane, and the spacing at this plane and kapillary inner fiber edge satisfies assembly unit and designing requirement.With
Shape capillaceous comprises semicircle, large semicircle, square, and its material comprises glass, pottery, metal, plastics etc.With
Optical fiber is by comprising gluing or process means such as Laser Welding (LBW) is fixed in the kapillary; The single fiber head that is coated with the single fiber head of anti-reflection film and is coated with filter coating is by comprising gluing or process means such as Laser Welding (LBW) is bolted together.
Realize that method for making 2 of the present invention is: get a capillary, in earlier its side being planarized to till the bore edges, insert optical fiber in the kapillary again and be fixed together; Be polished to a plane or inclined-plane (, will plate the optical fiber head of different films and wear into reverse direction) with optical fiber head end face if be polished to the inclined-plane with kapillary and optical fiber composition; All plate anti-reflection film at two single fiber end surfaces; With on the single fiber end surface that is coated with anti-reflection film but uses, stick a tablet filter (thickness adheres to specification) again as reflection end.Again these two optical fiber heads are fixed together and become iso-film double optical fiber head in the plane vertically, and reach the make peace spacing at two optical fiber edges of two fiber end faces one and meet design requirement.
Method 2 also comprises: the periphery that will be inserted with the circular capillaries of optical fiber processes an axial plane, and the spacing at this plane and kapillary inner fiber edge meets design requirement.
Realize that method for making 3 of the present invention is: the optical fiber head after will polishing is divided into two kinds, and plates or stick dissimilar filter coatings respectively; Be bolted together with the optical fiber head that is coated with or posts dissimilar filter coatings with two.
The present invention has following advantage:
1. owing to adopt input end fiber head and output terminal optical fiber head to make processing, difference plated film respectively, the new process that it is bolted together has solved the difficulty on the plated film at last, can realize producing in enormous quantities, has improved the yield rate of product, has reduced cost.
2. in method 2,,, realize that minimum reflection end inserts loss so when assembly unit, can axial adjustment come balanced optical distance because two optical fiber heads are assembly unit all-in-one-pieces.
Description of drawings
Fig. 1 is a general structure synoptic diagram of the present invention, represents that two kapillaries that optical fiber is housed are bolted together, wherein 1 kapillary, 2 optical fiber, 3 assembly unit faces.
Fig. 2 is the side view of Fig. 1.
Fig. 3 is another structural representation of the present invention, wherein 4 optical filtering diaphragms.
Fig. 4 is the side view of Fig. 3.
Fig. 5 makes anchor clamps synoptic diagram required for the present invention, and wherein 5 pedestals, 6 top boards, 7 side guides, 8 are adjusted bolt, 9 springs.
Fig. 6 is the side view of Fig. 5, wherein 10 end face location-plates.
Embodiment
The present invention includes the invention of product invention and method; Wherein embodiment one (shown in Fig. 1-2) comprises two capillaries 1 and the optical fiber 2 that is coated with different films.The excircle of this two capillary all has an axial plane (assembly unit face 3), and this plane must be enough near with the edge in hole capillaceous, so that the angle after the rays pass through lens is unlikely excessive.The optical fiber 2 that is coated with different films is housed respectively in the hole of this two capillary, and (common optical fiber head plating anti-reflection film also is antireflection film in wavelength division multiplex device, uses as input optical fibre; And plating filter coating usually, another root optical fiber head uses as reflection end, the wavelength that need see through is seen through, the wavelength cut-off that need end, to increase the isolation of two kinds of wavelength), then two capillaries are stitched together along the plane, spliced two optical fiber should get close to as much as possible, to meet design requirement, simultaneously the front end face of two capillaries must be consistent, and wherein the end face of every capillary can be the plane, also can be an inclined-plane; If the inclined-plane should with 6-8 ° comparatively suitable, if end face capillaceous is an inclined-plane, the direction that two optical fiber heads are oblique during grinding and polishing is opposite, thus two bevel directions are identical when splicing.In the present embodiment, can be large semi-circular, square or other Any shape for shape capillaceous; For material capillaceous can be glass, pottery, metal, plastics, also can be other suitable material.
Make the method for embodiment one: at first get a capillary, go into optical fiber and optical fiber is fixed in the hole capillaceous in hole capillaceous interpolation by methods such as bonding or laser bonding, if the kapillary that uses is round, just kapillary is ground a plane, and make this plane as far as possible near the hole; If the kapillary itself that uses has a plane, should try one's best near the hole, to meet design requirement in this plane so.End face to optical fiber polishes then, and the fiber end face after the polishing can be a plane, also can be an inclined-plane.After polishing, plate a kind of film at the optical fiber head end face.The prime advantage of this method is and can produces in batches, and can guarantee quality.Make the optical fiber head of the another kind of film of plating according to the method described above again, optical fiber head with two different films is stitched together (if the end face of two optical fiber is inclined-planes by methods such as bonding or laser bonding along the plane then, its angle should be the same, but direction is opposite), promptly become iso-film double optical fiber head of the present invention.
The structure of embodiment two (as Fig. 3-4) and method for making and embodiment one are basic identical.Optical fiber head end face after two polishings plates anti-reflection film or is antireflection film.A fiber end face of using as reflection end sticks the desired optical filtering diaphragm of a slice therein then.Must be from the light that optical fiber end is sent all by the optical filtering diaphragm.
At last together the amalgamation of finished like this single fiber head.Fiber end face and diaphragm top can be 0 or other numeral apart from the d (see figure 4), be decided by diaphragm thickness and refractive index, purpose is to make the light that sends from optical fiber 2 end faces arrive the light path of lens thereafter and return to arrive the equivalent optical path of second fiber end face or very approaching through lens and optical filtering diaphragm from catoptron.Carrying out optical path compensation by adjusting d also is one of characteristics of the present invention to lower loss.
The method for making of embodiment three and embodiment one are basic identical, and difference is that the optical fiber head after the polishing is divided into two kinds, and plates or stick dissimilar filter coatings respectively at the end face of two kinds of optical fiber heads; And then two optical fiber heads that are coated with or post dissimilar filter coatings are bolted together.
Need self-control anchor clamps (seeing Fig. 5-6) in manufacturing process of the present invention, the optical fiber head that these anchor clamps are used to make two different films parallel and end when splicing is consistent.These anchor clamps comprise a square pedestal 5, are connected with side guide 7 in the side of pedestal 5, are connected with top board 6 at the end face of pedestal 5, are fixed with end face location-plate 10 in the front of pedestal 5.During use, the optical fiber head end of two different films is withstood on the end face location-plate 10 of anchor clamps, bonding along the plane then, compress with top board 6 and side guide 7 again and get final product.
Film plating process of the present invention belongs to known technology, here omits and does not state.
Claims (7)
1. an assembling type iso-film double optical fiber head comprises optical fiber, kapillary, anti-reflection film, filter coating, and plated film and assembly unit, it is characterized in that
A. be provided with the single fiber head that is coated with anti-reflection film optical fiber in the kapillary,
B. be provided with the single fiber head that is coated with filter coating optical fiber in another kapillary,
C. a and b are bolted together and are iso-film double optical fiber head.
2. according to the said iso-film double optical fiber head of claim 1, it is characterized in that fiber end face is a plane or inclined-plane.
3. the method for making of an assembling type iso-film double optical fiber head is characterized in that
1. get a capillary, with the edge of its side grinding and polishing to close endoporus;
2. optical fiber is inserted in the kapillary after the processing and be fixed together;
3. the fiber end face in the kapillary is polished to a plane or inclined-plane;
4. the fiber end face after polishing plates anti-reflection film or filter coating.
4. according to the said method of claim 3, it is characterized in that shape capillaceous comprises semicircle, large semicircle, square, its material comprises glass, pottery, metal, plastics.
5. according to the said method of claim 3, it is characterized in that optical fiber is gluing by comprising, Laser Welding (LBW) or other powerful fixing means be fixed in the kapillary; Be coated with the single fiber head of anti-reflection film and be coated with that the single fiber head of filter coating is gluing by comprising, Laser Welding (LBW) or other powerful fixing means be bolted together.
6. according to the said method of claim 3, it is characterized in that
5. get two optical fiber heads that are coated with anti-reflection film;
6. the wherein optical fiber head in inciting somebody to action 5. sticks filter coating;
7. the optical fiber head with above-mentioned two different films is bolted together.
7. according to the said method of claim 3, it is characterized in that
8. the optical fiber head after will polishing is divided into two kinds, and plates or stick dissimilar filter coatings respectively;
9. two optical fiber heads that are coated with or post dissimilar filter coatings are bolted together.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200410074326 CN1259584C (en) | 2004-09-09 | 2004-09-09 | Assembling type iso-film double optical fiber head and its producing method |
| PCT/CN2005/001191 WO2006042449A1 (en) | 2004-09-09 | 2005-08-04 | Assembling type iso-flim double optical fiber head and its producing method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200410074326 CN1259584C (en) | 2004-09-09 | 2004-09-09 | Assembling type iso-film double optical fiber head and its producing method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1588145A CN1588145A (en) | 2005-03-02 |
| CN1259584C true CN1259584C (en) | 2006-06-14 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200410074326 Expired - Fee Related CN1259584C (en) | 2004-09-09 | 2004-09-09 | Assembling type iso-film double optical fiber head and its producing method |
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| Country | Link |
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| CN (1) | CN1259584C (en) |
| WO (1) | WO2006042449A1 (en) |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102087387A (en) * | 2010-12-03 | 2011-06-08 | 福州高意通讯有限公司 | Method for manufacturing optical fiber end and multi-optical-fiber collimator |
| CN105842791A (en) * | 2015-01-13 | 2016-08-10 | 深圳市锦特尔技术有限公司 | Adjustable double-fiber collimator and application thereof |
| CN108873163A (en) * | 2018-09-06 | 2018-11-23 | 福建中策光电股份公司 | A kind of light transmission component and preparation method thereof |
| CN109106465A (en) * | 2018-09-25 | 2019-01-01 | 中国科学院深圳先进技术研究院 | A kind of double optical fiber structures and preparation method thereof |
| US11768329B2 (en) * | 2020-01-16 | 2023-09-26 | II-VI Delaware, Inc | High isolation optical splitter |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6764224B2 (en) * | 2000-06-22 | 2004-07-20 | Avanex Corporation | Precision fiber ferrules |
| CN2450830Y (en) * | 2000-11-03 | 2001-09-26 | 福建华科光电有限公司 | High isolation wavelength-division multiplexer |
| JP2002189144A (en) * | 2000-12-20 | 2002-07-05 | Fujikura Ltd | Two-fiber fiber collimator and optical multiplexer/ demultiplexer |
| US6701040B2 (en) * | 2001-10-15 | 2004-03-02 | Ac Photonics, Inc. | Dense wavelength division multiplexer configuration |
| CN2532496Y (en) * | 2001-12-27 | 2003-01-22 | 福州康顺光通讯有限公司 | Double-sided double optical fiber head |
-
2004
- 2004-09-09 CN CN 200410074326 patent/CN1259584C/en not_active Expired - Fee Related
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2005
- 2005-08-04 WO PCT/CN2005/001191 patent/WO2006042449A1/en active Application Filing
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| Publication number | Publication date |
|---|---|
| CN1588145A (en) | 2005-03-02 |
| WO2006042449A1 (en) | 2006-04-27 |
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