WO2023026573A1 - Coupleur optique, module de circuit de conversion photoélectrique et émetteur-récepteur optique - Google Patents

Coupleur optique, module de circuit de conversion photoélectrique et émetteur-récepteur optique Download PDF

Info

Publication number
WO2023026573A1
WO2023026573A1 PCT/JP2022/016585 JP2022016585W WO2023026573A1 WO 2023026573 A1 WO2023026573 A1 WO 2023026573A1 JP 2022016585 W JP2022016585 W JP 2022016585W WO 2023026573 A1 WO2023026573 A1 WO 2023026573A1
Authority
WO
WIPO (PCT)
Prior art keywords
optical
axis direction
optical member
optical coupler
light
Prior art date
Application number
PCT/JP2022/016585
Other languages
English (en)
Japanese (ja)
Inventor
康弘 清水
真己 永田
直哉 森
一歩 嶋田
Original Assignee
株式会社村田製作所
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 株式会社村田製作所 filed Critical 株式会社村田製作所
Publication of WO2023026573A1 publication Critical patent/WO2023026573A1/fr

Links

Images

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
    • G02B6/32—Optical coupling means having lens focusing means positioned between opposed fibre ends
    • 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
    • G02B6/34—Optical coupling means utilising prism or grating
    • 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
    • G02B6/42—Coupling light guides with opto-electronic elements

Definitions

  • an optical path conversion optical block with a lens described in Patent Document 1 an optical transceiver using the optical path conversion optical block, and an optical active cable are known.
  • the optical path conversion light block with a lens described in Patent Document 1 includes a rectangular parallelepiped block body, a lens, a first reflector, and a second reflector.
  • the lens is formed on one or both of the opposing light incident and exit surfaces of the block body.
  • the first reflecting section reflects the light incident from the incident/exiting section formed on the light incident/exiting surface to convert the optical axis.
  • the second reflecting section reflects the light from the first reflecting section, converts the optical axis, and guides it to the incident/exiting section formed on the other light incident/exiting surface. According to such an optical path conversion optical block with a lens, it is possible to change the traveling direction of light.
  • an object of the present invention is to provide an optical coupler, a photoelectric conversion circuit module, and an optical transceiver that can reduce the angular deviation of the optical axis.
  • An optical coupler includes: A single member mainly made of glass or resin, and changing the light traveling direction from the Z-axis direction to the X-axis direction perpendicular to the Z-axis direction, or changing the light traveling direction to the X-axis direction a first optical member including a first optical element that changes from a direction to the Z-axis direction; a second optical member which is a single member mainly made of glass or resin and which includes a condensing lens; a fixing part for fixing the optical fiber,
  • the first optical member, the second optical member, and the fixed portion are arranged in this order on a straight line parallel to the X-axis direction and are arranged so as not to overlap each other when viewed in the Z-axis direction, and , are arranged so as not to overlap each other when viewed in the Y-axis direction orthogonal to the X-axis direction and the Z-axis direction.
  • FIG. 1 is a perspective view of an optical coupler 100 according to the first embodiment.
  • FIG. 2 is a top view of the optical coupler 100 according to the first embodiment.
  • FIG. 3 is a perspective view of an optical coupler 100a according to a first modification.
  • FIG. 4 is a front view of the first optical member 11 according to the first modified example.
  • FIG. 5 is a top view of an optical coupler 100a according to the first modification.
  • FIG. 6 is a perspective view of an optical coupler 100b according to a second modification.
  • FIG. 7 is a top view of an optical coupler 100b according to a second modification.
  • FIG. 8 is a perspective view of an optical coupler 100c according to a third modification.
  • FIG. 9 is a top view of an optical coupler 100c according to a third modification.
  • FIG. 10 is a perspective view of an optical coupler 100d according to the second embodiment.
  • FIG. 11 is a top view of an optical coupler 100d according to the second embodiment.
  • FIG. 12 is a perspective view of an optical coupler 100e according to the third embodiment.
  • FIG. 13 is a top view of an optical coupler 100e according to the third embodiment.
  • FIG. 14 is a perspective view of an optical coupler 100f according to a fourth modification.
  • FIG. 15 is a top view of an optical coupler 100f according to a fourth modification.
  • FIG. 16 is a perspective view of an optical coupler 100g according to the fourth embodiment.
  • FIG. 17 is a top view of an optical coupler 100g according to the fourth embodiment.
  • FIG. 18 is a perspective view of a photoelectric conversion circuit module 200 according to the fifth embodiment.
  • FIG. 19 is a top view of a photoelectric conversion circuit module 200 according to the fifth embodiment.
  • FIG. 20 is a perspective view of a photoelectric conversion circuit module 200a according to the sixth embodiment.
  • FIG. 21 is a top view of a photoelectric conversion circuit module 200a according to the sixth embodiment.
  • FIG. 22 is a perspective view of an optical transceiver 300 according to the seventh embodiment.
  • FIG. 23 is a top view of an optical transceiver 300 according to the seventh embodiment.
  • FIG. 1 is a perspective view of an optical coupler 100 according to the first embodiment. Note that the optical fiber OF is omitted in FIG.
  • FIG. 2 is a top view of the optical coupler 100 according to the first embodiment.
  • the X-axis direction is the direction in which the first optical member 11, the second optical member 12, and the fixed portion 13 are arranged. Also, the direction in which the normal to the first entrance/exit surface S1 extends is defined as the Z-axis direction.
  • the Z-axis direction is orthogonal to the X-axis direction. Also, the Z-axis direction is defined as the vertical direction.
  • the Y-axis direction is a direction orthogonal to the X-axis direction and the Z-axis direction.
  • the X-axis direction, Y-axis direction, and Z-axis direction in this embodiment do not have to match the X-axis direction, Y-axis direction, and Z-axis direction when the optical coupler 100 is used.
  • the main material of the member means the material having the highest mass percentage among the one or more materials contained in the member.
  • a single member means a member having a structure that cannot be separated without breaking. Therefore, for example, a member in which two resin pieces are fixed with screws is not a single member.
  • the optical coupler 100 has a function of forming an optical path, a function of condensing light, and a function of changing the traveling direction of the light L. More specifically, the optical coupler 100 includes a first optical member 11, a second optical member 12, a fixing portion 13 and a structure 14, as shown in FIG.
  • the first optical element 111 has a first entrance/exit surface S1, a second entrance/exit surface S2, and a total reflection surface S3.
  • the direction in which the normal to the first entrance/exit surface S1 extends is parallel to the Z-axis direction.
  • the direction in which the normal to the second entrance/exit surface S2 extends is parallel to the X-axis direction.
  • the total reflection surface S3 forms an angle of 45° with each of the first entrance/exit surface S1 and the second entrance/exit surface S2.
  • the Z+ direction end of the total reflection surface S3 is positioned in the X- direction from the Z- direction end of the total reflection surface S3.
  • the first optical element 111 changes the traveling direction of the light L from the Z-axis direction to the X-axis direction. Specifically, the light L incident on the first entrance/exit surface S1 from the Z ⁇ direction is reflected by the total reflection surface S3 and exits from the second entrance/exit surface S2 in the X+ direction. Alternatively, the first optical element 111 changes the traveling direction of the light L from the X-axis direction to the Z-axis direction. Specifically, the light L incident on the second incident/exiting surface S2 from the X+ direction is reflected by the total reflection surface S3 and emitted from the first incident/exiting surface S1 in the Z ⁇ direction.
  • the main material of the second optical member 12 is glass. Also, the second optical member 12 is a single member. The second optical member 12 has a rectangular parallelepiped shape.
  • the second optical member 12 includes a condensing lens 121 .
  • the condenser lens 121 is a gradient index lens. That is, the condenser lens 121 has a parabolic refractive index gradient from the center of the condenser lens 121 toward the outer circumference of the condenser lens 121 when viewed in the X-axis direction.
  • the condensing lens 121 condenses the light L whose traveling direction vector includes an X-axis direction component.
  • the condensing lens 121 converges the light L emitted from the second incident/exiting surface S2 of the first optical element 111 .
  • the condenser lens 121 collects the light L emitted from the optical fiber OF.
  • the condenser lens 121 has a cylindrical shape extending in the X-axis direction, and the direction of the central axis of the cylinder is parallel to the X-axis direction.
  • the fixing part 13 fixes the optical fiber OF.
  • the main material of the fixed part 13 is glass.
  • the fixed portion 13 has a plate shape having two main surfaces aligned in the Z-axis direction.
  • the fixed portion 13 includes a V-shaped groove G when viewed in the X-axis direction.
  • the groove G is provided in one of the two main surfaces of the fixed portion 13, which is positioned in the Z+ direction.
  • the groove G has a shape extending in the X-axis direction.
  • An optical fiber OF is fixed over the groove G.
  • the end of the optical fiber OF includes a portion extending in the X-axis direction, as shown in FIG.
  • the optical fiber OF receives the light L that has passed through the condenser lens 121 .
  • the optical fiber OF emits light L that has passed through the optical fiber OF.
  • the structure 14 supports the first optical member 11, the second optical member 12, and the fixed portion 13.
  • the main material of structure 14 is glass.
  • the structure 14 is a unitary member.
  • the structure 14 includes a first portion FS, a second portion SS and a third portion TS, as shown in FIG.
  • the first portion FS, the second portion SS and the third portion TS are integrally formed of the same main material.
  • Each of the first portion FS, the second portion SS and the third portion TS has a plate shape.
  • the first portion FS has a shape extending in the X-axis direction.
  • the second portion SS has a shape extending in the X-axis direction.
  • the third portion TS has a shape extending in the Y-axis direction.
  • the third portion TS is located between the X-direction end of the first portion FS and the X-direction end of the second portion SS, and is positioned between the X-direction end of the first portion FS and the second portion SS. It is fixed to the end of the part SS in the X-direction.
  • the first optical member 11, the second optical member 12, and the fixed portion 13 are arranged in this order from the X ⁇ direction to the X+ direction on a straight line parallel to the X-axis direction.
  • the first optical member 11, the second optical member 12, and the fixed portion 13 are arranged so as to overlap each other.
  • the first optical member 11, the second optical member 12, and the fixed portion 13 are arranged in this order with a gap from the X ⁇ direction to the X+ direction.
  • a gap Vd1 exists between the first optical member 11 and the second optical member 12 .
  • the air gap Vd1 penetrates the optical coupler 100 in the Z-axis direction, as shown in FIG.
  • a gap Vd2 exists between the second optical member 12 and the fixed portion 13 .
  • the air gap Vd2 penetrates the optical coupler 100 in the Z-axis direction.
  • the first optical member 11, the second optical member 12, and the fixed portion 13 do not overlap each other when viewed in the Z-axis direction, as shown in FIG. are arranged as Also, due to the presence of the gap Vd1 and the gap Vd2, the first optical member 11, the second optical member 12 and the fixed portion 13 are arranged so as not to overlap each other when viewed in the Y-axis direction, as shown in FIG. It is
  • the first optical member 11 is positioned between the first portion FS and the second portion SS of the structure 14 and fixed to the first portion FS and the second portion SS.
  • the second optical member 12 is positioned between the first portion FS and the second portion SS of the structure 14 and fixed to the first portion FS and the second portion SS.
  • the fixed portion 13 is positioned between the first portion FS and the second portion SS of the structure 14 and fixed to the first portion FS and the second portion SS.
  • the first optical member 11, the second optical member 12, the fixing portion 13 and the structural body 14 are integrally molded with the same main material.
  • the first optical member 11, the second optical member 12, the fixed part 13 and the structure 14 are a single member.
  • the main material of the first optical member 11, the main material of the second optical member 12, the main material of the fixing portion 13, and the main material of the structure 14 are all glass.
  • the deviation of the angle of the optical axis of the light L can be reduced. More specifically, the deviation of the angle of the optical axis of the light L is the angle formed by the optical axis of the light L and the X-axis direction. Specifically, the deviation of the angle of the optical axis of the light L includes the deviation of the position of the first optical member 11, the deviation of the position of the second optical member 12, the deviation of the position of the fixed part 13, and the deviation of the second incidence/emission surface S2.
  • the first optical member 11, the second optical member 12, and the fixed portion 13 are arranged in this order from the X ⁇ direction to the X+ direction on a straight line parallel to the X-axis direction. Also, the first optical member 11, the second optical member 12, and the fixed portion 13 are arranged so as not to overlap each other when viewed in the Y-axis direction. As a result, the length of the optical coupler 100 in the X-axis direction is increased. As a result, as described below, the angle formed by the optical axis of the light L and the X-axis direction can be reduced.
  • the length in the X-axis direction of the conventional optical coupler is 0.6 mm
  • the length in the Y-axis direction is 0.6 mm
  • the length in the Z-axis direction is 0.6 mm.
  • the X+ direction end of the conventional optical coupler is shifted 1 ⁇ m in the Y+ direction from the X ⁇ direction end.
  • the angle formed by the optical axis of the light L and the X-axis direction is 0.096 degrees.
  • the first optical member 11, the second optical member 12 and the fixing portion 13 of the optical coupler 100 are arranged so as not to overlap each other when viewed in the Z-axis direction.
  • the length of the optical coupler 100 in the Z-axis direction is 0.3 mm.
  • the length of the optical coupler 100 in the X-axis direction is 1.2 mm and the length in the Y-axis direction is 0.6 mm. That is, the conventional optical coupler and the optical coupler 100 are assumed to have the same volume.
  • the X+ direction end of the optical coupler 100 is displaced from the X ⁇ direction end by 1 ⁇ m in the Y+ direction.
  • the first optical element 111 changes the traveling direction of the light L from the Z-axis direction to the X-axis direction. Specifically, the light L incident on the first entrance/exit surface S1 from the Z ⁇ direction is reflected by the total reflection surface S3 and exits from the second entrance/exit surface S2 in the X+ direction.
  • the first collimator lens 151 reduces the divergence angle of the fast axis of the light L whose traveling direction has been changed to the X-axis direction by the first optical element 111 .
  • the second collimator lens 152 reduces the divergence angle of the slow axis of the light L that has passed through the first collimator lens 151 .
  • the second collimator lens 152 is not limited to a convex lens, and may be, for example, a gradient index lens.
  • the second collimator lens 152 reduces the divergence angles of the fast axes of the lights L2-L6 condensed by the plurality of condensing lenses 122-126.
  • the first collimator lens 151 reduces the divergence angles of the slow axes of the lights L2 to L6 that have passed through the second collimator lens 152 .
  • the first optical element 111 directs the traveling direction of the light beams L2 to L6 whose slow-axis divergence angle and fast-axis divergence angle are reduced by the first collimator lens 151 and the second collimator lens 152 from the X-axis direction to the Z-axis direction. change.
  • Photoelectric conversion circuit 40 Light emitting part 100, 100a to 100g: Optical coupler 111: first optical element 112: second optical element 113: third optical element 121 to 126: condenser lens 151: first collimator lens 152: second collimator lens 200, 200a: photoelectric conversion circuit module 300: optical transceiver ES1 ⁇ ES5: electric signal FS: first part SS: second part TS: third part G: grooves G2 to G6: fixed positions L, L2 to L6: light OF, OF2 to OF6: optical fiber S1: first input/output Surface S2: Second input/output surface S3: Total reflection surfaces Vd1 to Vd6: Gaps

Landscapes

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

Abstract

L'invention concerne un coupleur optique (100) comprenant : un premier matériau optique (11) qui est un élément unique composé principalement de verre ou d'une résine et qui comprend un premier élément optique (111) pour changer la direction de déplacement de la lumière depuis une direction d'axe Z vers une direction d'axe X orthogonale à la direction de l'axe Z, ou de la direction de l'axe X à la direction de l'axe Z ; un second élément optique (12) qui est un élément unique composé principalement de verre ou d'une résine et qui comprend une lentille de condenseur (121) ; et une section de fixation (13) pour fixer une fibre optique. Le premier élément optique (11), le second élément optique (12), et la section de fixation (13) sont alignés dans cet ordre sur une ligne droite parallèle à la direction de l'axe X, sont agencés de manière à ne pas se chevaucher l'un avec l'autre lorsqu'ils sont observés dans la direction de l'axe Z, et sont agencés de manière à ne pas se chevaucher l'un avec l'autre lorsqu'ils sont observés dans une direction d'axe Y orthogonale à la direction de l'axe X et à la direction de l'axe Z.
PCT/JP2022/016585 2021-08-26 2022-03-31 Coupleur optique, module de circuit de conversion photoélectrique et émetteur-récepteur optique WO2023026573A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2021-137740 2021-08-26
JP2021137740 2021-08-26

Publications (1)

Publication Number Publication Date
WO2023026573A1 true WO2023026573A1 (fr) 2023-03-02

Family

ID=85322638

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/JP2022/016585 WO2023026573A1 (fr) 2021-08-26 2022-03-31 Coupleur optique, module de circuit de conversion photoélectrique et émetteur-récepteur optique

Country Status (1)

Country Link
WO (1) WO2023026573A1 (fr)

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5168537A (en) * 1991-06-28 1992-12-01 Digital Equipment Corporation Method and apparatus for coupling light between an optoelectronic device and a waveguide
WO1993020468A1 (fr) * 1992-04-06 1993-10-14 The Furukawa Electric Co., Ltd. Lentille asymetrique
JP2002341191A (ja) * 2001-05-14 2002-11-27 Mitsubishi Electric Corp 光素子モジュール
JP2010513988A (ja) * 2006-12-22 2010-04-30 ライトワイヤー，インク． 二重レンズの単一光受信器アセンブリ
WO2021149589A1 (fr) * 2020-01-20 2021-07-29 株式会社中原光電子研究所 Composant optique

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5168537A (en) * 1991-06-28 1992-12-01 Digital Equipment Corporation Method and apparatus for coupling light between an optoelectronic device and a waveguide
WO1993020468A1 (fr) * 1992-04-06 1993-10-14 The Furukawa Electric Co., Ltd. Lentille asymetrique
JP2002341191A (ja) * 2001-05-14 2002-11-27 Mitsubishi Electric Corp 光素子モジュール
JP2010513988A (ja) * 2006-12-22 2010-04-30 ライトワイヤー，インク． 二重レンズの単一光受信器アセンブリ
WO2021149589A1 (fr) * 2020-01-20 2021-07-29 株式会社中原光電子研究所 Composant optique

Similar Documents

Publication Publication Date Title
JP5025695B2 (ja) 光モジュール
JP5536523B2 (ja) 集積された光学レンズ回転ブロックを含むファイバー用コネクタモジュール及びトランシーバモジュールと光ファイバーとの間の光信号を結合する方法
TWI612353B (zh) 光插座及具備它之光模組
JP5198353B2 (ja) レンズアレイおよびこれを備えた光モジュール
WO2013080783A1 (fr) Prise optique et module optique équipé de celle-ci
JP6676412B2 (ja) 光レセプタクル、光モジュールおよび光モジュールの製造方法
WO2013140922A1 (fr) Réceptacle optique et module optique équipé de ce dernier
US10048458B2 (en) Optical module
WO2020011032A1 (fr) Module optique
WO2016121613A1 (fr) Réceptacle optique et module optique
WO2017068843A1 (fr) Élément de conversion de chemin optique, appareil d'interface optique et système de transmission optique
WO2013132896A1 (fr) Logement optique et module optique le comportant
JP6359848B2 (ja) 光レセプタクルおよびこれを備えた光モジュール
WO2019176181A1 (fr) Module laser
KR100553877B1 (ko) 광소자모듈
WO2023026573A1 (fr) Coupleur optique, module de circuit de conversion photoélectrique et émetteur-récepteur optique
JP7197435B2 (ja) 光レセプタクルおよび光モジュール
JP6681751B2 (ja) 光レセプタクルおよび光モジュール
JPS6061707A (ja) 光結合方法
JP7204556B2 (ja) 光レセプタクル、光モジュールおよび光モジュールの製造方法
TWI608263B (zh) Optical socket and light module with it
CN113031258A (zh) 光学系统及其光处理方法
WO2018221401A1 (fr) Réceptacle optique et module optique
US20230213712A1 (en) Optical receptacle and optical module
WO2022144999A1 (fr) Embase optique et module optique

Legal Events

Date Code Title Description
121 Ep: the epo has been informed by wipo that ep was designated in this application

Ref document number: 22860871

Country of ref document: EP

Kind code of ref document: A1

NENP Non-entry into the national phase

Ref country code: DE