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WO2006042449A1 - Tete de fibre optique double de type iso film pour assemblage et son procede de production - Google Patents

Tete de fibre optique double de type iso film pour assemblage et son procede de production Download PDF

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Publication number
WO2006042449A1
WO2006042449A1 PCT/CN2005/001191 CN2005001191W WO2006042449A1 WO 2006042449 A1 WO2006042449 A1 WO 2006042449A1 CN 2005001191 W CN2005001191 W CN 2005001191W WO 2006042449 A1 WO2006042449 A1 WO 2006042449A1
Authority
WO
WIPO (PCT)
Prior art keywords
fiber
double
capillary
film
coated
Prior art date
Application number
PCT/CN2005/001191
Other languages
English (en)
Chinese (zh)
Inventor
Zhongming Mao
Zhongtie Zhang
Jiahui Yan
Original Assignee
Lightel Technologies Inc.
Huanlong Technology Company Ltd.
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Lightel Technologies Inc., Huanlong Technology Company Ltd. filed Critical Lightel Technologies Inc.
Publication of WO2006042449A1 publication Critical patent/WO2006042449A1/fr

Links

Classifications

    • 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

Definitions

  • the invention relates to the technical field of optical fiber communication, and mainly relates to an assembled hetero-film double-fiber head and a manufacturing method thereof.
  • the double-fiber double-fiber head can be applied to a diaphragm type high isolation wavelength division multiplexer or to various other types of micro-optical device type optical devices.
  • wavelength division multiplexing device based on the optical film technology combined with an optical microlens
  • a dual fiber head with a film of different properties is a key component, and more in a fiber optic communication system.
  • the wavelength isolation (Isolation) requirements of such wavelength division multiplexing devices are becoming higher and higher, and it is difficult to achieve isolation of more than 40 decibels only by a diaphragm in front of the lens. Therefore, in the reflected light path of the diaphragm, adding a diaphragm between the microlens lens and the end face of the fiber, or directly plating the filter film on the end face of the fiber at the reflection end becomes a common solution.
  • the "optical path matching" problem of the input end fiber and the reflection end fiber must be considered, so the fiber end face plating filter is used.
  • the membrane approach is simple and feasible. However, since the input fiber and the reflection end fiber are very close together, an AR coating is applied to the input fiber end face, and the process of plating the filter film on the end face of the reflection fiber is complicated, high in cost, and low in yield. ⁇
  • An object of the present invention is to provide an assembled multi-film double-fiber head and a method of fabricating the same that overcomes the problems in the prior art.
  • the technical solution for realizing the present invention is:
  • the assembled hetero-membrane double-fiber head comprises an optical fiber, a capillary tube, an anti-reflection film, a filter film, and a coating and assembling method, wherein the main structure of the hetero-membrane double-fiber head is
  • a single fiber head provided with an optical fiber having an antireflection film in a capillary
  • a single fiber head of an optical fiber having a filter film disposed in another capillary and
  • the two single-fiber heads with different membranes are assembled together to form a double-fiber double-fiber head.
  • the structure of the above-mentioned hetero-membrane double-fiber head further includes:
  • a single fiber optic head with an optical fiber disposed on a side of the flattened capillary and polished with an antireflection coating on its end face.
  • a single fiber optic head having an optical fiber disposed on the other side of the flattened capillary tube and having a filter film coated on the end surface thereof;
  • the assembly faces of the two capillaries with different membranes are plane, and the spacing between the plane and the edge of the fiber within the capillary should meet the design requirements;
  • the end face of the fiber is a plane or a bevel.
  • the manufacturing method 1 for realizing the invention is: taking a capillary tube, first smoothing the side surface to the edge of the inner hole, then inserting the optical fiber into the capillary tube and fixing it together; and polishing the end face of the optical fiber head composed of the capillary tube and the optical fiber into one Plane or bevel (if polished to be beveled, the fiber heads to be coated with different films are ground in opposite directions); and the polished fiber end faces are respectively coated with an anti-reflection film or filter film; and a single fiber to be coated with an anti-reflection film
  • the head and the single-fiber head coated with the filter film are assembled and fixed together in the axial direction to form a double-fiber double-fiber head, and the end faces of the two fibers are uniform and the spacing between the two fibers meets the design requirements.
  • Method 1 also includes:
  • the circumferential force of the circular capillary with the optical fiber inserted is 1:1, and the distance between the plane and the edge of the fiber in the capillary meets the assembly and design requirements.
  • the shape of the capillary includes a semicircle, a large semicircle, and a square, and the material thereof includes glass, ceramic, metal, plastic, and the like.
  • the optical fiber is fixed in the capillary by a process including adhesion or laser welding; a single fiber head with an antireflection film
  • the single fiber head coated with the filter film is assembled by a process including adhesion or laser welding.
  • the manufacturing method 2 of the present invention is: taking a capillary tube, first smoothing the side surface to the edge of the inner hole, inserting the optical fiber into the capillary tube and fixing it together; and polishing the end face of the optical fiber head composed of the capillary tube and the optical fiber into a plane Or bevel (if polished to be beveled, the fiber heads with different membranes are ground in opposite directions); an anti-reflection coating is applied to both single-fiber head ends; and a single fiber coated with an anti-reflection coating but as a reflective end A piece of filter is attached to the end face (thickness meets design requirements). Then, the two fiber ends are assembled and fixed together along the axial plane to form a double-fiber head with a different film, and the end faces of the two fibers are uniform and the spacing between the edges of the two fibers meets the design requirements.
  • the method 2 further includes: machining a circumferential surface of the circular capillary with the optical fiber into an axial plane, and the distance between the plane and the edge of the optical fiber in the capillary meets the design requirement.
  • the manufacturing method 3 for realizing the invention is: dividing the polished fiber head into two kinds, and respectively plating or pasting different types of filter films; and two optical fibers plated or labeled with different types of filter films The heads are assembled together.
  • Method 2 since the two fiber heads are assembled into one body, the optical path can be adjusted axially during assembly to achieve the minimum insertion loss of the reflection end.
  • FIG. 1 is a schematic view showing the overall structure of the present invention, showing two capillary tubes containing optical fibers assembled together, wherein 1 capillary, 2 optical fibers, and 3 assembled faces.
  • Figure 2 is a side view of Figure 1.
  • Fig. 3 is a schematic view showing another structure of the present invention, wherein 4 filters are coated.
  • Figure 4 is a side view of Figure 3.
  • Fig. 5 is a schematic view of a jig required for the production of the present invention, wherein 5 bases, 6 upper press plates, 7 side press plates, 8 adjustment bolts, and 9 springs.
  • Figure 6 is a side view of Figure 5 with a 10 end positioning plate.
  • the present invention includes product inventions and method inventions; wherein embodiment one (shown in Figures 1-2) includes two capillary tubes 1 and an optical fiber 2 having different membranes.
  • the outer circumferences of the two capillaries have an axial plane (assembly face 3), which must be close enough to the edge of the capillary hole so that the angle of light passing through the lens is not too large.
  • Optical fibers 2 coated with different membranes are respectively arranged in the holes of the two capillary tubes (in the wavelength division multiplexing device, usually one fiber-optic head is coated with an anti-reflection film, also called an anti-reflection film, as an input fiber; and the other
  • the root fiber head is usually coated with a filter film as a reflection end, so that the wavelength to be transmitted is transmitted, and the cutoff wavelength is cut off to increase the isolation of the two wavelengths.
  • the two capillaries are spliced together along the plane, and spliced.
  • the two fibers should be as close as possible to meet the design requirements.
  • the front faces of the two capillaries must be the same.
  • each capillary can be either a plane or a bevel. If it is a bevel, it should be 6-8. ° It is more suitable. If the end face of the capillary is a bevel, the two fiber heads are inclined in opposite directions during grinding and polishing, so that the two bevels have the same direction when splicing.
  • the shape of the capillary tube may be a large semicircle, a square or any other shape; the material of the capillary tube may be glass, ceramic, metal, plastic, or other suitable materials.
  • the method of the first embodiment is as follows: First, a capillary tube is taken, an optical fiber is inserted into the pore of the capillary tube, and the optical fiber is fixed in the pore of the capillary by bonding or laser welding. If the capillary used is round, the capillary is ground. To make a plane, make the plane as close as possible to the hole; if the capillary used has a plane, the plane should be as close as possible to the hole to meet the design requirements. Then, the end face of the optical fiber is polished, and the polished fiber end face may be a plane or a slope. After polishing, a film is plated on the end of the fiber tip. The greatest advantage of this method is that it can be mass-produced and ensures quality.
  • another fiber-optic head coated with another film is prepared, and then the fiber heads of two different films are spliced together by plane bonding or laser splicing (if the end faces of the two fibers are beveled, the angle should be The same, but in the opposite direction, becomes the hetero-membrane double fiber head of the present invention.
  • the structure and manufacturing method of the second embodiment are basically the same as those of the first embodiment.
  • An antireflection film or an anti-reflection film is coated on the end faces of the two polished fiber ends.
  • a piece of the desired filter film is then attached to one end of the fiber used as the reflective end. Light from the fiber end must pass through the filter diaphragm.
  • the distance d between the end face of the fiber and the tip of the diaphragm can be 0 or other number depending on the thickness and refractive index of the diaphragm.
  • the purpose is to make the light path from the end face of the fiber 2 reach the path and the path of the lens behind it.
  • the optical path of the mirror back through the lens and the filter diaphragm to the end of the second fiber is equal or very close. It is also one of the features of the present invention to perform optical path compensation by adjusting d to reduce loss.
  • the manufacturing method of the third embodiment is basically the same as that of the first embodiment.
  • the difference is that the polished fiber ends are divided into two types, and different types of filter films are respectively plated or attached on the end faces of the two fiber ends; Two fiber ends coated with or coated with different types of filter films are assembled together.
  • a self-contained jig (see Fig. 5-6) is required, which is used to make the fiber heads of two different films parallel and uniform at the end of the splicing.
  • the jig includes a right-angled base 5 to which a side pressing plate 7 is attached, and an upper pressing plate 6 is attached to the top surface of the base 5, and an end positioning plate 10 is fixed to the front surface of the base 5.
  • the ends of the fiber ends of the two different films are placed on the end face positioning plate 10 of the jig, and then adhered along the plane, and then pressed by the upper platen 6 and the side platen 7.
  • the coating method of the present invention is a well-known technique and will not be described here.

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  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Optical Couplings Of Light Guides (AREA)

Abstract

La présente invention concerne une tête de fibre optique double iso film de joint de séparation et son procédé de production. La structure comprend une tête de fibre placée dans un tube capillaire et revêtue d’un revêtement de réduction de réflexion sur sa face d’extrémité, une autre tête de fibre revêtue d’une couche mince sur la face d’extrémité située dans un autre tube capillaire, ainsi qu’une double tête de fibre avec différentes couches séparées des deux têtes de fibre. Le procédé de fabrication consiste à prendre un tube capillaire, polir sa face latérale proche de l’orifice interne, puis brancher la fibre dans le tube capillaire pour y adhérer, enfin polir la face d’extrémité de la fibre dans le tube en un plan ou une inclinaison à enduire avec un revêtement de réduction de réflexion et un revêtement de couche mince devant être regroupés le long du plan axial. Les faces d’extrémité des deux fibres coïncident l’une avec l’autre et les espaces entre les bords des deux fibres répondent aux exigences de conception.
PCT/CN2005/001191 2004-09-09 2005-08-04 Tete de fibre optique double de type iso film pour assemblage et son procede de production WO2006042449A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CN200410074326.5 2004-09-09
CN 200410074326 CN1259584C (zh) 2004-09-09 2004-09-09 拼装式异膜双光纤头及其制作方法

Publications (1)

Publication Number Publication Date
WO2006042449A1 true WO2006042449A1 (fr) 2006-04-27

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Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/CN2005/001191 WO2006042449A1 (fr) 2004-09-09 2005-08-04 Tete de fibre optique double de type iso film pour assemblage et son procede de production

Country Status (2)

Country Link
CN (1) CN1259584C (fr)
WO (1) WO2006042449A1 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108873163A (zh) * 2018-09-06 2018-11-23 福建中策光电股份公司 一种光传输元件及其制作方法
US11768329B2 (en) * 2020-01-16 2023-09-26 II-VI Delaware, Inc High isolation optical splitter

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102087387A (zh) * 2010-12-03 2011-06-08 福州高意通讯有限公司 一种制作光纤头和多光纤准直器的方法
CN105842791A (zh) * 2015-01-13 2016-08-10 深圳市锦特尔技术有限公司 一种可调双光纤准直器及其应用
CN109106465A (zh) * 2018-09-25 2019-01-01 中国科学院深圳先进技术研究院 一种双光纤结构及其制备方法

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CN2450830Y (zh) * 2000-11-03 2001-09-26 福建华科光电有限公司 一种高隔离度波分复用器
JP2002189144A (ja) * 2000-12-20 2002-07-05 Fujikura Ltd ２心ファイバコリメータ及び光合分波器
US20020118929A1 (en) * 2000-06-22 2002-08-29 Brun Marc G. Precision fiber ferrules
CN2532496Y (zh) * 2001-12-27 2003-01-22 福州康顺光通讯有限公司 双面双光纤头
US6701040B2 (en) * 2001-10-15 2004-03-02 Ac Photonics, Inc. Dense wavelength division multiplexer configuration

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20020118929A1 (en) * 2000-06-22 2002-08-29 Brun Marc G. Precision fiber ferrules
CN2450830Y (zh) * 2000-11-03 2001-09-26 福建华科光电有限公司 一种高隔离度波分复用器
JP2002189144A (ja) * 2000-12-20 2002-07-05 Fujikura Ltd ２心ファイバコリメータ及び光合分波器
US6701040B2 (en) * 2001-10-15 2004-03-02 Ac Photonics, Inc. Dense wavelength division multiplexer configuration
CN2532496Y (zh) * 2001-12-27 2003-01-22 福州康顺光通讯有限公司 双面双光纤头

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108873163A (zh) * 2018-09-06 2018-11-23 福建中策光电股份公司 一种光传输元件及其制作方法
CN108873163B (zh) * 2018-09-06 2024-10-22 福建中策光电股份公司 一种光传输元件及其制作方法
US11768329B2 (en) * 2020-01-16 2023-09-26 II-VI Delaware, Inc High isolation optical splitter

Also Published As

Publication number Publication date
CN1588145A (zh) 2005-03-02
CN1259584C (zh) 2006-06-14

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