JPS57100410A - Optical isolator - Google Patents

Optical isolator

Info

Publication number
JPS57100410A
JPS57100410A JP55176687A JP17668780A JPS57100410A JP S57100410 A JPS57100410 A JP S57100410A JP 55176687 A JP55176687 A JP 55176687A JP 17668780 A JP17668780 A JP 17668780A JP S57100410 A JPS57100410 A JP S57100410A
Authority
JP
Japan
Prior art keywords
beams
taper
normal
abnormal
faraday rotor
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.)
Granted
Application number
JP55176687A
Other languages
English (en)
Other versions
JPS6158809B2 (ja
Inventor
Masataka Shirasaki
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Fujitsu Ltd
Original Assignee
Fujitsu 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 Fujitsu Ltd filed Critical Fujitsu Ltd
Priority to JP55176687A priority Critical patent/JPS57100410A/ja
Priority to DE8181305823T priority patent/DE3172735D1/de
Priority to EP81305823A priority patent/EP0054411B1/en
Priority to US06/329,940 priority patent/US4548478A/en
Priority to CA000392164A priority patent/CA1169282A/en
Publication of JPS57100410A publication Critical patent/JPS57100410A/ja
Publication of JPS6158809B2 publication Critical patent/JPS6158809B2/ja
Granted legal-status Critical Current

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
    • G02B6/27—Optical coupling means with polarisation selective and adjusting means
    • G02B6/2746—Optical coupling means with polarisation selective and adjusting means comprising non-reciprocal devices, e.g. isolators, FRM, circulators, quasi-isolators
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B5/00—Optical elements other than lenses
    • G02B5/30—Polarising 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
    • G02B6/42—Coupling light guides with opto-electronic elements
    • G02B6/4201—Packages, e.g. shape, construction, internal or external details
    • G02B6/4204—Packages, e.g. shape, construction, internal or external details the coupling comprising intermediate optical elements, e.g. lenses, holograms
    • G02B6/4207—Packages, e.g. shape, construction, internal or external details the coupling comprising intermediate optical elements, e.g. lenses, holograms with optical elements reducing the sensitivity to optical feedback
    • G02B6/4208—Packages, e.g. shape, construction, internal or external details the coupling comprising intermediate optical elements, e.g. lenses, holograms with optical elements reducing the sensitivity to optical feedback using non-reciprocal elements or birefringent plates, i.e. quasi-isolators
    • G02B6/4209—Optical features
    • G—PHYSICS
    • G02—OPTICS
    • G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
    • G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
    • G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour 
    • G02F1/03—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour  based on ceramics or electro-optical crystals, e.g. exhibiting Pockels effect or Kerr effect
    • G02F1/0305—Constructional arrangements
    • G02F1/0311—Structural association of optical elements, e.g. lenses, polarizers, phase plates, with the crystal
    • G—PHYSICS
    • G02—OPTICS
    • G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
    • G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
    • G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour 
    • G02F1/09—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour  based on magneto-optical elements, e.g. exhibiting Faraday effect
    • G02F1/093—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour  based on magneto-optical elements, e.g. exhibiting Faraday effect used as non-reciprocal devices, e.g. optical isolators, circulators
    • G—PHYSICS
    • G02—OPTICS
    • G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
    • G02F2203/00—Function characteristic
    • G02F2203/06—Polarisation independent

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Nonlinear Science (AREA)
  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Ceramic Engineering (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • Light Guides In General And Applications Therefor (AREA)
  • Optical Couplings Of Light Guides (AREA)
JP55176687A 1980-12-15 1980-12-15 Optical isolator Granted JPS57100410A (en)

Priority Applications (5)

Application Number Priority Date Filing Date Title
JP55176687A JPS57100410A (en) 1980-12-15 1980-12-15 Optical isolator
DE8181305823T DE3172735D1 (en) 1980-12-15 1981-12-10 Optical arrangement for optically coupling optical fibres
EP81305823A EP0054411B1 (en) 1980-12-15 1981-12-10 Optical arrangement for optically coupling optical fibres
US06/329,940 US4548478A (en) 1980-12-15 1981-12-11 Optical device
CA000392164A CA1169282A (en) 1980-12-15 1981-12-14 Optical modulator device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP55176687A JPS57100410A (en) 1980-12-15 1980-12-15 Optical isolator

Publications (2)

Publication Number Publication Date
JPS57100410A true JPS57100410A (en) 1982-06-22
JPS6158809B2 JPS6158809B2 (ja) 1986-12-13

Family

ID=16017965

Family Applications (1)

Application Number Title Priority Date Filing Date
JP55176687A Granted JPS57100410A (en) 1980-12-15 1980-12-15 Optical isolator

Country Status (5)

Country Link
US (1) US4548478A (ja)
EP (1) EP0054411B1 (ja)
JP (1) JPS57100410A (ja)
CA (1) CA1169282A (ja)
DE (1) DE3172735D1 (ja)

Cited By (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS58116515A (ja) * 1981-12-29 1983-07-11 Fujitsu Ltd 光アイソレ−タ
JPS592016A (ja) * 1982-06-28 1984-01-07 Fujitsu Ltd 光アイソレ−タ
JPS5922026A (ja) * 1982-07-28 1984-02-04 Fujitsu Ltd 光アイソレ−タ
JPS60238813A (ja) * 1984-05-11 1985-11-27 Fujitsu Ltd 光アイソレ−タ
JPS6333123U (ja) * 1987-07-23 1988-03-03
JPH01292917A (ja) * 1988-05-20 1989-11-27 Oki Electric Ind Co Ltd 受光モジュール
WO1993005429A1 (fr) * 1991-09-12 1993-03-18 Fujitsu Limited Dispositif optique
US5278853A (en) * 1991-05-28 1994-01-11 Mitsubishi Gas Chemical Co., Ltd. Optical isolator
US5446578A (en) * 1988-07-21 1995-08-29 Hewlett-Packard Company Polarization preserving optical isolator
US5848203A (en) * 1995-08-14 1998-12-08 Sumitomo Osaka Cement Co., Ltd. Polarization-independent optical isolator
WO2010016541A1 (ja) * 2008-08-06 2010-02-11 株式会社 精工技研 偏光依存型光アイソレータ用非相反ユニット及び偏光依存型光アイソレータ
US7843633B2 (en) 2007-01-15 2010-11-30 Sumitomo Electric Industries, Ltd. Laser processing apparatus
US8080773B2 (en) 2008-02-25 2011-12-20 Sumitomo Electric Industries, Ltd. Method and apparatus of measuring backward light, and laser processing method
US8305689B2 (en) 2007-10-09 2012-11-06 Sumitomo Electric Industries, Ltd. Light source apparatus and optical module included therein

Families Citing this family (86)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CA1253726A (en) * 1982-06-28 1989-05-09 Masataka Shirasaki Polarization rotation compensator and optical isolator using the same
DE3613738A1 (de) * 1986-04-23 1987-10-29 Sohler Wolfgang Signaluebertragungsvorrichtung mit integriert elektro-optischem lichtmodulator
JPH0521923Y2 (ja) * 1986-07-02 1993-06-04
DE3741455A1 (de) * 1987-12-08 1989-06-22 Standard Elektrik Lorenz Ag Optischer isolator
US4893890A (en) * 1988-05-04 1990-01-16 Lutes George F Low-loss, high-isolation, fiber-optic isolator
US5033830A (en) * 1989-10-04 1991-07-23 At&T Bell Laboratories Polarization independent optical isolator
US5052786A (en) * 1990-03-05 1991-10-01 Massachusetts Institute Of Technology Broadband faraday isolator
US5237445A (en) * 1990-11-30 1993-08-17 Shimadzu Corporation Optical isolator
JPH04371911A (ja) * 1991-06-21 1992-12-24 Hitachi Ltd 光アイソレータおよび希土類添加ファイバ光増幅装置
US5191467A (en) * 1991-07-24 1993-03-02 Kaptron, Inc. Fiber optic isolater and amplifier
JP3160319B2 (ja) * 1991-07-25 2001-04-25 株式会社信光社 光アイソレータ
US5631771A (en) * 1991-09-19 1997-05-20 Lucent Technologies Inc. Optical isolator with polarization dispersion and differential transverse deflection correction
US5864428A (en) * 1992-01-13 1999-01-26 Hesline; Raymond Polarizing device
JP2775547B2 (ja) * 1992-02-17 1998-07-16 秩父小野田株式会社 光アイソレータ
US5291571A (en) * 1992-03-19 1994-03-01 Fujitsu Limited Duplicated light source module
JP2757093B2 (ja) * 1992-04-20 1998-05-25 富士電気化学株式会社 無偏波分散型光アイソレータ
US5889609A (en) * 1992-07-31 1999-03-30 Fujitsu Limited Optical attenuator
JPH08505961A (ja) * 1993-01-21 1996-06-25 イー−テック・ダイナミックス・インコーポレイテッド 偏光モード分散の低い光学装置
US5276747A (en) * 1993-01-21 1994-01-04 E-Tek Dynamics, Inc. Polarization-independent optical switch/attenuator
JP2986302B2 (ja) * 1993-03-10 1999-12-06 松下電器産業株式会社 光アイソレータ
EP0653662A1 (en) * 1993-11-12 1995-05-17 AT&T Corp. Optical isolator with reduced relative walk-off
US5602673A (en) * 1993-12-29 1997-02-11 Lucent Technologies Inc. Optical isolator without polarization mode dispersion
JP3153406B2 (ja) * 1994-03-03 2001-04-09 松下電器産業株式会社 光回路及びそれを用いた光伝送システム
GB2293024A (en) * 1994-09-07 1996-03-13 Northern Telecom Ltd Optical isolator functioning at least twice in different pathways
US5539574A (en) * 1994-12-21 1996-07-23 At&T Corp. Optical isolator with fabry-perot ripple reduction
JP3660402B2 (ja) * 1995-08-23 2005-06-15 富士通株式会社 光フィルタ
JP3667827B2 (ja) * 1995-08-29 2005-07-06 富士通株式会社 ファラデー回転子
JP3770945B2 (ja) * 1995-10-31 2006-04-26 富士通株式会社 入射角が可変な光学膜を有する光デバイス
US6048103A (en) * 1995-12-21 2000-04-11 Kyocera Corporation Polarization independent optical isolator with integrally assembled birefringent crystal element and Faraday rotator
US5808793A (en) 1996-01-17 1998-09-15 Hewlett-Packard Company Low-cost compact optical isolators
JP3739471B2 (ja) 1996-03-01 2006-01-25 富士通株式会社 光可変減衰器
JP3737566B2 (ja) * 1996-06-20 2006-01-18 富士通株式会社 光デバイス
JP3773601B2 (ja) * 1996-09-18 2006-05-10 富士通株式会社 ファラデー回転子
JPH10161076A (ja) * 1996-11-29 1998-06-19 Fujitsu Ltd 磁気光学効果を利用した光デバイス
KR100200210B1 (ko) * 1996-11-30 1999-06-15 윤종용 광 아이솔레이터
DE19725720A1 (de) * 1997-06-18 1998-12-24 Alsthom Cge Alcatel Optischer Isolator und Wellenlängenmuliplexer-Modul mit integriertem optischen Isolator
US6088153A (en) * 1997-06-26 2000-07-11 Scientific-Atlanta, Inc. Multi-functional optical isolator
US6239900B1 (en) 1997-09-19 2001-05-29 Nz Applied Technologies Corp. Reflective fiber-optic isolator
US6269202B1 (en) 1997-10-10 2001-07-31 Dicon Fiberoptics, Inc. Highly temperature stable filter for fiberoptic applications and system for altering the wavelength or other characteristics of optical devices
JPH11218721A (ja) * 1997-11-07 1999-08-10 Samsung Electronics Co Ltd 多段複合光学装置
KR100288443B1 (ko) * 1997-12-08 2001-05-02 윤종용 아이솔레이터를이용한광변조기및이를구비한광전송장치
US6496300B2 (en) 1998-02-27 2002-12-17 Fujitsu Limited Optical amplifier
US6441955B1 (en) 1998-02-27 2002-08-27 Fujitsu Limited Light wavelength-multiplexing systems
US6078710A (en) * 1998-04-02 2000-06-20 Oplink Communications, Inc. Method and system for providing a multi-channel optical filter
KR20010074479A (ko) 1998-04-08 2001-08-04 추후제출 고속 전기광학 변조기
US6137619A (en) * 1998-04-08 2000-10-24 Nz Applied Technologies, Incorporated High-speed electro-optic modulator
US6049426A (en) 1998-08-17 2000-04-11 New Focus, Inc. Compact polarization insensitive circulators with simplified structure and low polarization mode dispersion
US6175448B1 (en) 1998-08-17 2001-01-16 New Focus, Inc. Optical circulators using beam angle turners
US6226115B1 (en) 1998-09-30 2001-05-01 Fujitsu Limited Optical circulator or switch having a birefringent wedge positioned between faraday rotators
US6167174A (en) * 1998-10-27 2000-12-26 Adc Telecommunications, Inc. Multiple port, fiber optic isolator
US6212008B1 (en) 1998-11-13 2001-04-03 New Focus, Inc. Compact polarization insensitive circulators with simplified structure and low polarization mode dispersion
US6259831B1 (en) * 1999-06-29 2001-07-10 Reveo, Inc. All-optical interconnect utilizing polarization gates
US6822793B2 (en) 1999-10-29 2004-11-23 Finisar Corporation Compact polarization insensitive circulators with simplified structure and low polarization mode dispersion
US6532316B1 (en) 1999-11-10 2003-03-11 Avanex Corporation Bi-directional polarization-independent optical isolator
US6480331B1 (en) * 1999-11-10 2002-11-12 Avanex Corporation Reflection-type polarization-independent optical isolator, optical isolator/amplifier/monitor, and optical system
US6567578B1 (en) 2000-02-16 2003-05-20 Adc Telecommunications Fiber optic device operating at two or more wavelengths
US6532321B1 (en) * 2000-02-16 2003-03-11 Adc Telecommunications, Inc. Fiber optic isolator for use with multiple-wavelength optical signals
US6404537B1 (en) 2000-03-06 2002-06-11 Corning Applied Technologies Corporation Polarization transformer
US6442310B1 (en) 2000-07-14 2002-08-27 Jds Uniphase Inc. Optical coupling device and method
US7173762B2 (en) * 2000-10-13 2007-02-06 Finisar Corporation Optical isolator with reduced insertion loss and minimized polarization mode dispersion
JP2002252420A (ja) * 2000-12-15 2002-09-06 Furukawa Electric Co Ltd:The 半導体レーザ素子、半導体レーザモジュールおよびその製造方法ならびに光ファイバ増幅器
US6628461B2 (en) * 2001-01-10 2003-09-30 Finisar Corporation Method and apparatus for a polarization beam splitter/combiner with an integrated optical isolator
US6546159B1 (en) * 2001-08-22 2003-04-08 Avanex Corporation Method and apparatus for compensating differential group delay
US6819810B1 (en) * 2002-04-09 2004-11-16 Oplink Communications, Inc. Depolarizer
US6987896B1 (en) 2002-04-09 2006-01-17 Oplink Communications, Inc. Optical isolator
US6873462B2 (en) 2002-04-09 2005-03-29 Oplink Communications, Inc. Three-port circulator
US6900933B1 (en) 2002-04-23 2005-05-31 Oplink Communications, Inc. Integrated two-pump combiner for optical fiber amplifiers
US6836575B1 (en) 2002-06-04 2004-12-28 Oplink Communications, Inc. Three-port PM circular having isolation function
US6839170B2 (en) * 2002-10-15 2005-01-04 Oplink Communications, Inc. Optical isolator
JP2007010854A (ja) * 2005-06-29 2007-01-18 Nec Corp 光軸補正用平行平板を用いた光通信用モジュールとその製造方法
KR100810312B1 (ko) * 2006-02-07 2008-03-04 삼성전자주식회사 다중 채널 방식의 양방향 광 송수신기
JP4797733B2 (ja) * 2006-03-23 2011-10-19 住友金属鉱山株式会社 高出力レーザー用偏波無依存型光アイソレータ
US7426325B2 (en) * 2007-01-04 2008-09-16 Electro-Optics Technology, Inc. Compact, high power, fiber pigtailed faraday isolators
JP5439669B2 (ja) 2011-05-19 2014-03-12 株式会社エス・エム・エムプレシジョン 偏波無依存型光アイソレータ
JP5643936B2 (ja) 2011-06-29 2014-12-24 フルウチ化学株式会社 コリメータおよびコリメータ付き光アイソレータ
JP5535150B2 (ja) 2011-08-25 2014-07-02 株式会社エス・エム・エムプレシジョン 偏波無依存型光アイソレータ
CN102707461B (zh) * 2012-05-31 2015-03-04 福建华科光电有限公司 偏振无关光学隔离器的制造方法、光学件键合工艺和溶液
CN103217815B (zh) * 2013-03-07 2015-09-16 深圳朗光科技有限公司 光隔离器
WO2016094940A1 (en) 2014-12-14 2016-06-23 Cylite Pty Ltd Multichannel optical receivers
KR101751704B1 (ko) 2014-12-30 2017-06-30 광주과학기술원 광 아이솔레이터
US9791627B1 (en) 2016-04-08 2017-10-17 Dicon Fiberoptics, Inc. Integrated optical components with wavelength tuning and power isolation functions
CN106353855A (zh) * 2016-11-14 2017-01-25 福建福晶科技股份有限公司 一种高隔离度光隔离器
US10718963B1 (en) 2016-11-16 2020-07-21 Electro-Optics Technology, Inc. High power faraday isolators and rotators using potassium terbium fluoride crystals
US10698227B2 (en) 2017-08-11 2020-06-30 Christie Digital Systems Usa, Inc. Apparatus for combining laser beams
CN113126210A (zh) * 2020-01-16 2021-07-16 福州高意通讯有限公司 一种单边出纤光隔离器
DE102022119556A1 (de) 2022-08-04 2024-02-15 Trumpf Laser Gmbh Vorrichtung und Verfahren zum Einkoppeln eines Laserstrahls in eine Doppelclad-Faser

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JPS5576322A (en) * 1978-12-02 1980-06-09 Fujitsu Ltd Light isolator

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Cited By (20)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6255766B2 (ja) * 1981-12-29 1987-11-20 Fujitsu Ltd
JPS58116515A (ja) * 1981-12-29 1983-07-11 Fujitsu Ltd 光アイソレ−タ
JPS592016A (ja) * 1982-06-28 1984-01-07 Fujitsu Ltd 光アイソレ−タ
JPS6151299B2 (ja) * 1982-06-28 1986-11-08 Fujitsu Ltd
JPS5922026A (ja) * 1982-07-28 1984-02-04 Fujitsu Ltd 光アイソレ−タ
JPH0827441B2 (ja) * 1982-07-28 1996-03-21 富士通株式会社 光アイソレ−タ
JPS60238813A (ja) * 1984-05-11 1985-11-27 Fujitsu Ltd 光アイソレ−タ
JPS6333123U (ja) * 1987-07-23 1988-03-03
JPH0532826Y2 (ja) * 1987-07-23 1993-08-23
JPH01292917A (ja) * 1988-05-20 1989-11-27 Oki Electric Ind Co Ltd 受光モジュール
US5446578A (en) * 1988-07-21 1995-08-29 Hewlett-Packard Company Polarization preserving optical isolator
US5278853A (en) * 1991-05-28 1994-01-11 Mitsubishi Gas Chemical Co., Ltd. Optical isolator
US5402509A (en) * 1991-09-12 1995-03-28 Fujitsu Limited Optical fiber coupling device including lenses and magnetooptics
WO1993005429A1 (fr) * 1991-09-12 1993-03-18 Fujitsu Limited Dispositif optique
US5848203A (en) * 1995-08-14 1998-12-08 Sumitomo Osaka Cement Co., Ltd. Polarization-independent optical isolator
US7843633B2 (en) 2007-01-15 2010-11-30 Sumitomo Electric Industries, Ltd. Laser processing apparatus
US8305689B2 (en) 2007-10-09 2012-11-06 Sumitomo Electric Industries, Ltd. Light source apparatus and optical module included therein
US8080773B2 (en) 2008-02-25 2011-12-20 Sumitomo Electric Industries, Ltd. Method and apparatus of measuring backward light, and laser processing method
WO2010016541A1 (ja) * 2008-08-06 2010-02-11 株式会社 精工技研 偏光依存型光アイソレータ用非相反ユニット及び偏光依存型光アイソレータ
US8891166B2 (en) 2008-08-06 2014-11-18 Seikoh Giken Co., Ltd. Polarization dependent type optical isolator

Also Published As

Publication number Publication date
JPS6158809B2 (ja) 1986-12-13
US4548478A (en) 1985-10-22
EP0054411B1 (en) 1985-10-23
CA1169282A (en) 1984-06-19
DE3172735D1 (en) 1985-11-28
EP0054411A1 (en) 1982-06-23

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