WO2018117316A1 - Dispositif de couplage optique et son procédé de fabrication - Google Patents

Dispositif de couplage optique et son procédé de fabrication Download PDF

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Publication number
WO2018117316A1
WO2018117316A1 PCT/KR2016/015301 KR2016015301W WO2018117316A1 WO 2018117316 A1 WO2018117316 A1 WO 2018117316A1 KR 2016015301 W KR2016015301 W KR 2016015301W WO 2018117316 A1 WO2018117316 A1 WO 2018117316A1
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WO
WIPO (PCT)
Prior art keywords
optical fiber
block
optical
array block
coupling device
Prior art date
Application number
PCT/KR2016/015301
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English (en)
Korean (ko)
Inventor
이은구
이정찬
Original Assignee
주식회사 옵텔라
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 주식회사 옵텔라 filed Critical 주식회사 옵텔라
Publication of WO2018117316A1 publication Critical patent/WO2018117316A1/fr

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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
    • G02B6/36—Mechanical coupling means
    • G02B6/38—Mechanical coupling means having fibre to fibre mating means
    • G02B6/3807—Dismountable connectors, i.e. comprising plugs
    • G02B6/3873—Connectors using guide surfaces for aligning ferrule ends, e.g. tubes, sleeves, V-grooves, rods, pins, balls
    • G02B6/3885—Multicore or multichannel optical connectors, i.e. one single ferrule containing more than one fibre, e.g. ribbon type
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01J—MEASUREMENT OF INTENSITY, VELOCITY, SPECTRAL CONTENT, POLARISATION, PHASE OR PULSE CHARACTERISTICS OF INFRARED, VISIBLE OR ULTRAVIOLET LIGHT; COLORIMETRY; RADIATION PYROMETRY
    • G01J1/00—Photometry, e.g. photographic exposure meter
    • G01J1/02—Details
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01J—MEASUREMENT OF INTENSITY, VELOCITY, SPECTRAL CONTENT, POLARISATION, PHASE OR PULSE CHARACTERISTICS OF INFRARED, VISIBLE OR ULTRAVIOLET LIGHT; COLORIMETRY; RADIATION PYROMETRY
    • G01J1/00—Photometry, e.g. photographic exposure meter
    • G01J1/42—Photometry, e.g. photographic exposure meter using electric radiation detectors
    • G01J1/44—Electric circuits
    • 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
    • G02B6/36—Mechanical coupling means
    • 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
    • G02B6/36—Mechanical coupling means
    • G02B6/38—Mechanical coupling means having fibre to fibre mating means
    • 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
    • G02B6/36—Mechanical coupling means
    • G02B6/38—Mechanical coupling means having fibre to fibre mating means
    • G02B6/3807—Dismountable connectors, i.e. comprising plugs
    • G02B6/3873—Connectors using guide surfaces for aligning ferrule ends, e.g. tubes, sleeves, V-grooves, rods, pins, balls
    • G02B6/3886—Magnetic means to align ferrule ends

Definitions

  • the present invention relates to an optical coupling device and a method of manufacturing the same, and more particularly, an input surface of an optical fiber that receives light emitted from a light source or an output surface of an optical fiber that emits light to the photodiode faces the light source or the photodiode.
  • the present invention relates to an optical coupling device and a method of manufacturing the same, which form a certain angle (for example, 45 degrees).
  • a multichannel light source is used to increase the transmission capacity, and a multichannel optical waveguide (or an optical waveguide array) is used for optical coupling.
  • an optical element used for optical communication using an optical fiber uses an optical waveguide element having an optical waveguide as a basis, and an optical waveguide forms impurities on an optical substrate through thermal diffusion or ion implantation, and visually identifies microns. It has a difficult microstructure.
  • An optical device must receive an optical signal from the outside or transmit an optical signal to another place outside, and the optical fiber is most often used as a means. Therefore, in order to transmit the optical signal through the optical fiber, it is necessary to connect the input and output portions of the optical element and the optical fiber.
  • an optical fiber array block in which a plurality of optical fibers are bonded is essential. Since the fiber array block plays a very important role in the optical communication device, precise manufacturing of the fiber array block is directly related to the transmission efficiency.
  • the optical fiber array blocks are interconnected to function as connectors for connecting optical fibers.
  • the surfaces of the optical fiber array blocks that are connected to each other may be formed with, for example, an inclined surface of 8 degrees to minimize connection loss.
  • Korean Patent Registration No. 10-1268096 and Korean Patent Publication No. 2004-0081187 disclose an apparatus and method for grinding an optical fiber array block and the like.
  • the two-dimensional coupling of these optical elements in the optical coupling of the light source, the light guide plate, and the optical fiber in the optical module occupies a large area, and may not be suitable for the trend of focusing and small size of the optical module. Therefore, the irradiation direction of the light source is made vertical, and the incident surface of the light guide plate or the optical fiber of the light receiving unit receiving the vertical irradiation light is formed at 45 degrees, but the light guide plate or the optical fiber itself is horizontally installed to transmit the incident light horizontally. .
  • the input end of the optical fiber is light To accommodate this, a 45 degree slope is formed.
  • Fig. 4 of US patent application 09 / 891,149 (20002.06.02 published) discloses an example in which an optical signal output from a light source is input to an input surface of such a 45 degree inclination.
  • the light incidence end of the optical fiber is fixed to protrude slightly from the end surface of the array block (fixed block), the protruding portion is very easy to be damaged by colliding with other objects in the manufacturing or use of the optical coupling device, Because of this, there is a problem that often replace the optical coupling device itself, or frequently replace the optical fiber in the fixed block.
  • the optical coupling device is made as described above, since the input surface of the optical fiber end is formed to be inclined at 45 degrees, the optical coupling device can be easily damaged by colliding with an external object, and thus the optical coupling device having such a configuration that prevents the optical coupling There is a need for a manufacturing method that can easily manufacture the device.
  • the direction of the inclined plane should be the same, and the degree of protruding from the array block should be the same to be installed in the array block so that the optical coupling efficiency of each channel is similar to transfer information No distortion, no error, and good efficiency.
  • the fiber itself is very small and not easy to handle, so it is not easy to arrange the installation angles accurately and to align the light source with a constant distance from the light source.
  • an optical coupling device and a method of manufacturing the optical coupling device having a plurality of 45 degree inclined surfaces having the same direction in the array block, and having the same degree of separation as the light transmitting element such as a light source can maintain the optical coupling efficiency similarly. Is requested.
  • the present invention is to solve and compensate for the difficulty of accurate coupling between the optical fiber and the optical device (light source, photodiode) in the optical coupling device as described above, the configuration that can be made precisely the relative position between the optical fiber and the array block
  • An object of the present invention is to provide an optical coupling device and a method of manufacturing the same.
  • the present invention is to obtain a uniform optical coupling efficiency for each channel by polishing the optical fiber array at a constant angle (for example 45 degrees), and the basic materials of the conventional optical fiber array block, such as cover block, V-shaped groove and epoxy adhesive layer ( 40) to maintain stability during polishing, increase the reliability of the product after manufacture, and improve the optical coupling efficiency by minimizing the distance between the fiber center polished at a certain angle (for example, 45 degrees) and the optical device (light source or PD).
  • An object of the present invention is to provide a coupling device and a method of manufacturing the same.
  • the present invention relates to an optical coupling device capable of obtaining even superheating efficiency evenly for each channel by efficiently correcting an alignment state of an optical fiber and an array block, particularly in an optical coupling device having a plurality of parallel optical fibers arranged in one optical fiber array block. It is an object to provide a manufacturing method.
  • an optical fiber having an optical signal incidence plane or an emission plane having an inclined surface (for example 45 degrees) of a constant angle and an array block formed with grooves to fix the optical fiber
  • Grooves are formed on the upper surface of the array block, and optical fibers are fixed and seated in the grooves.
  • the end face of the array block and the end face of the optical fiber are located on the same plane, which forms an inclined surface (for example, 45 degrees) of downward angle with each other.
  • an auxiliary block fixed to the array block may be further provided with each other or together to press the optical fiber on the adhesive or the upper surface of the block to fix the optical fiber to the groove of the array block, but to expose the inclined portion of the optical fiber end.
  • the array block generally has a plurality of parallel grooves on the upper surface, and a plurality of optical fibers are fixed in parallel. In this case, even the end incident surfaces of all the optical fibers are coplanar with the end surfaces of the array block.
  • the polishing may be performed in a plurality of stages in the step of forming the inclined plane, and may be provided with a coarse polishing step for block polishing and a precision polishing step for the inclined surface of the optical fiber end.
  • the position of the optical fiber can be precisely coupled to the array block of the optical coupling device, so that the optical coupling efficiency can be easily increased, and the optical fiber ends are buried in the grooves of the array block. This can reduce the need for replacement and management.
  • the present invention can efficiently and accurately align the position of the optical fiber and the array block and the inclined surface, especially in the optical coupling device having a plurality of parallel optical fibers arranged in one optical fiber array block, in particular the inclined surface of the end angle It is possible to precisely combine the optical fiber with the array block (processed as much as about 40 to 45 degrees according to the surrounding environment and the needs of the device), thereby increasing the uniformity of the optical coupling efficiency for each channel and generating distortion or error in signal transmission. Can be reduced.
  • FIG. 1 is a plan view showing an optical coupling device according to an embodiment of the present invention.
  • FIG. 2 is a side view showing an optical coupling device according to an embodiment of the present invention.
  • FIG. 3 is an enlarged side view illustrating a state in which a light incident surface is exposed at the tip of the right side of FIG. 2 and a state in which light of a light source is incident on this portion;
  • Figure 4 is a front view showing an optical coupling device according to an embodiment of the present invention.
  • the optical coupling device will be used together with the abbreviation of simply 'block', which is a substantially rectangular parallelepiped array block 10 having a top surface having a plurality of V-shaped grooves arranged side by side. ) And a plurality of optical fibers 20 fixed in these grooves.
  • the block 30 has a stepped down portion at the upper left side in which a plurality of optical fibers 20 are introduced into the bundle as shown in the side view.
  • the bundle of optical fibers 20 is inserted into this stepped portion of the block 10 from the outside and is installed in the upper groove with the protective layer removed.
  • the plurality of optical fibers placed in the stepped portion to secure the optical fiber 20 to the block 10 to be stably coupled to each other is coupled to the stepped portion by the epoxy adhesive layer 40 and are coupled to each other.
  • the cover block 30 or the auxiliary block is placed over the corresponding section of the inlet side of the grooved portion with the optical fiber 20 seated in the upper groove of the block 10, but the right end of the block formed by the inclined surface In the cross section, the grooves of the optical fiber 20 and the block 10 are exposed without an auxiliary block thereon.
  • the optical fiber 20 is in close contact with the left and right sides of the V-shaped groove 15 of the block 10 and the lower surface of the cover block 30 in the portion having the block 10 and the cover block 30 up and down. It is stably supported and fixed in the block.
  • the upper side is covered with an epoxy adhesive layer 40 'and is seated and fixed in the V-shaped groove.
  • both the optical fiber array block and the cover block are made of glass material and thus are transparently hollowed out.
  • a block or a cover block of another material may be used.
  • the end of the optical fiber is formed to protrude slightly more than the end of the block.
  • both the end surface forming the end of the optical fiber and the end surface forming the end of the block are both top and side views. It consists of an inclined (for example 45 degree) plane at an angle in the phase, and the end faces of all the optical fibers and the end faces of the blocks are located on one plane.
  • the ends of the optical fiber are almost entirely occupied in the grooves of the block, except for the part necessary to receive light from an external light source, and protected by the body of the block.
  • the end of the optical fiber has an optical fiber inclined surface 25 which forms a horizontal and constant angle (45 degrees in the example of FIG. 3).
  • the light source 100 is provided above the inclined surface vertically.
  • the light source may be a light emitting device such as a semiconductor laser.
  • each of the optical fiber 20 is composed of a core layer 23 and a cladding layer 21 surrounding the core layer 23, the refractive index of the core layer is slightly large, so that the total reflection at the interface is easy.
  • the light source 100 of FIG. 4 may be a light receiving element. In this case, the light propagation direction is toward the light receiving element in the optical fiber.
  • the light When light is emitted downward from the light source 100 vertically, the light enters the optical fiber through the cladding layer 21 on the upper side of the fiber core 23.
  • the light that enters inside is reflected here and propagates to the left along the optical fiber by reflecting a large portion at the interface between the medium having high refractive index (optical fiber) and the medium having low refractive index (air), which is indicated by the diagonal line of optical fiber 25.
  • the optical fiber slope of the end fiber and the upper part of the optical fiber are not surrounded by the block but exposed to the light from the light source, and the other part of the optical fiber is surrounded by the block on both sides and the bottom in the horizontal direction. Protected from external shocks.
  • Conventional optical coupling device has been using the method of processing the optical fiber end first to the inclined plane when the end of the optical fiber is inclined surface or inclined surface, placing each optical fiber on the optical fiber array block, and fixing with a cover block and adhesive .
  • each optical fiber is positioned and fixed in each groove of the block in a state in which the incidence plane or the outgoing plane of the end is not separately processed.
  • the end of the optical fiber may coincide with the end of the block, or may be in a somewhat protruding state.
  • the end surface of the optical coupling device is the end surface in the state where the edge portion 13 indicated by the dotted line at the lower right of the block of Fig. 2 is present, and in this state the optical coupling device is fixed to the jig or the like.
  • the end face of the optical coupling device is polished by the polishing device to remove the edge portion 13 to form an inclined end surface of the optical coupling device.
  • the right end of the optical fiber fixed to the block is also polished together with the right end of the block to have an inclined surface forming the same plane as the end of the block.
  • the end surfaces of all the optical fibers form an inclined surface existing in the same plane.
  • the end surface of the optical fiber needs to be polished more smoothly because it is the place where the optical signal enters and reflects, and has a more precise polishing step through finer abrasives and polishing means than conventional block surface polishing.
  • This polishing can be made in two or more steps from coarse polishing to fine polishing.
  • the block is made of glass (glass) material
  • the optical fiber and the material difference is not so much, it can be polished together naturally to the same degree.
  • Conventional abrasives and polishing means are well known with respect to the light incidence and the exit surface of the optical fiber end, so further detailed descriptions will be omitted here.
  • the optical coupling device of the present invention When the optical coupling device of the present invention is made through the above process, a plurality of grooves are formed in one fixing block, a plurality of optical fibers are fixedly installed in these grooves, and a plurality of optical fibers can be processed at the same degree and angle at once. Therefore, the direction in which the incidence planes or the outgoing planes of the respective optical fibers are directed and the degree of polishing, and the incidence planes of the incidence planes or the outgoing planes of the respective optical fibers can be made to the same extent and in opposition to the elements to receive or give optical signals. Or the distance between the light receiving element) and the optical fiber can be minimized.
  • optical coupling efficiency of a channel can be improved in the transmission of optical signals, and since the optical coupling is performed to each channel to the same degree, the signal will be transmitted to the same level, so that signal transmission can be performed without distortion or deformation. You can expect
  • the light source is installed above the vertically inclined plane of incidence at the end of the optical fiber, the light source is installed below the vertical, and the optical coupling device is also sufficiently adopted when the optical coupling device is installed in the optical module with the top and bottom reversed. Can be.
  • the external light is transmitted through the optical fiber to reach the inclined surface, reflected from the inclined surface to the outside through the cladding layer
  • the light emitting element such as a photodiode, is provided in the emission direction, or the incident surface inclined at 45 degrees of the light guide plate is sufficiently conceivable.
  • the end is covered in the case where the cover block does not cover the optical fiber so that there is no delay in the optical input path.
  • the cover block is thin and sufficiently transparent glass material, the end of the optical fiber is covered. It is also possible to process the inclined surface of the end of the optical coupling device by covering the cover block with the cover block, and to cover the optical fiber with the block and the cover block up and down. You can also think of exposing the tip.

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

Abstract

La présente invention se rapporte à un dispositif de couplage optique comprenant : une fibre optique ayant une surface d'incidence de signal optique ou une surface d'émission de signal optique formée en tant que surface d'inclinaison ayant un angle prédéterminé ; et un bloc de réseau ayant des rainures de sorte à fixer la fibre optique, des rainures étant formées sur la surface supérieure du bloc de réseau, la fibre optique étant fixée et chargée sur les rainures et la surface d'extrémité du bloc de réseau ainsi que la surface d'extrémité de la fibre optique étant positionnées sur la même surface plane qui forme une surface d'inclinaison ayant un angle prédéterminé. Le dispositif de couplage optique : peut être fabriqué de telle sorte que la surface d'extrémité du bloc de réseau et la surface d'extrémité de la fibre optique soient positionnées sur une surface de plan incliné puisque la fibre optique est disposée sur l'extrémité de la rainure du bloc de réseau et fixée à l'aide d'un adhésif ou d'un bloc auxiliaire et, ensuite, les extrémités du bloc de réseau et de la fibre optique sont polies ensemble en tant que surface d'inclinaison ; et peut former de manière efficace et précise les positions de la fibre optique et du bloc de réseau et l'état d'agencement de la surface d'inclinaison.
PCT/KR2016/015301 2016-12-21 2016-12-27 Dispositif de couplage optique et son procédé de fabrication WO2018117316A1 (fr)

Applications Claiming Priority (2)

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KR1020160175697A KR20180072285A (ko) 2016-12-21 2016-12-21 광결합장치 및 그 제조방법
KR10-2016-0175697 2016-12-21

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112683317A (zh) * 2020-12-23 2021-04-20 浙江澍源智能技术有限公司 一种辅助调整面阵、线阵探测器安装装置及安装方法

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR102570603B1 (ko) 2019-01-28 2023-08-24 아크소프트 코포레이션 리미티드 광센서 조립체
CN112327419B (zh) * 2020-11-03 2022-06-28 中航光电科技股份有限公司 一种波导垂直光耦合结构

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US5809193A (en) * 1996-07-23 1998-09-15 Seikoh Giken Co., Ltd. Optical device having a slant connecting end surface
JP2008015224A (ja) * 2006-07-06 2008-01-24 Namiki Precision Jewel Co Ltd 光接続装置と実装方法
KR20110008317A (ko) * 2008-12-11 2011-01-26 가부시키가이샤 미마키 엔지니어링 3차원 잉크젯 프린터
KR101063963B1 (ko) * 2011-02-22 2011-09-08 주식회사 피피아이 평판형 광도파로 소자용 광 파워 측정 모듈 및 그 제조방법
KR20120086588A (ko) * 2011-01-26 2012-08-03 주식회사 한택 어레이 광 콜리메이터

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DE10033485C2 (de) 2000-07-10 2003-10-23 Infineon Technologies Ag Koppelglasfaser zur optischen Kopplung einer Lichtstrahlungsquelle an einen Mehrmoden-Lichtwellenleiter, optoelektronisches Lichtsendebauelement für Mehrmoden-Lichtwellenleiter und Herstellungsverfahren für Koppelglasfenster
JP2003231047A (ja) 2002-02-08 2003-08-19 Three M Innovative Properties Co 光ファイバーコネクター端面を仕上げ研磨する方法
KR101268096B1 (ko) 2010-12-02 2013-05-29 한국생산기술연구원 광섬유 어레이 블록용 전자동 연삭시스템

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5809193A (en) * 1996-07-23 1998-09-15 Seikoh Giken Co., Ltd. Optical device having a slant connecting end surface
JP2008015224A (ja) * 2006-07-06 2008-01-24 Namiki Precision Jewel Co Ltd 光接続装置と実装方法
KR20110008317A (ko) * 2008-12-11 2011-01-26 가부시키가이샤 미마키 엔지니어링 3차원 잉크젯 프린터
KR20120086588A (ko) * 2011-01-26 2012-08-03 주식회사 한택 어레이 광 콜리메이터
KR101063963B1 (ko) * 2011-02-22 2011-09-08 주식회사 피피아이 평판형 광도파로 소자용 광 파워 측정 모듈 및 그 제조방법

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112683317A (zh) * 2020-12-23 2021-04-20 浙江澍源智能技术有限公司 一种辅助调整面阵、线阵探测器安装装置及安装方法

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