CA2148317A1 - Optical Circulator - Google Patents

Optical Circulator

Info

Publication number
CA2148317A1
CA2148317A1 CA2148317A CA2148317A CA2148317A1 CA 2148317 A1 CA2148317 A1 CA 2148317A1 CA 2148317 A CA2148317 A CA 2148317A CA 2148317 A CA2148317 A CA 2148317A CA 2148317 A1 CA2148317 A1 CA 2148317A1
Authority
CA
Canada
Prior art keywords
birefringent crystal
pair
plates
crystal plates
dividing
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
CA2148317A
Other languages
French (fr)
Other versions
CA2148317C (en
Inventor
Yihao Cheng
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.)
JDS Fitel Inc
Original Assignee
JDS Fitel Inc
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 JDS Fitel Inc filed Critical JDS Fitel Inc
Priority to CA002148317A priority Critical patent/CA2148317C/en
Priority to US08/442,368 priority patent/US5574596A/en
Publication of CA2148317A1 publication Critical patent/CA2148317A1/en
Application granted granted Critical
Publication of CA2148317C publication Critical patent/CA2148317C/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Classifications

    • 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
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B5/00—Optical elements other than lenses
    • G02B5/30—Polarising elements
    • G02B5/3083—Birefringent or phase retarding elements

Abstract

The optical circulator according to the present invention comprises two birefringent crystal end-plates, non-reciprocal Faraday rotators inserted between birefringent crystal plates, and a pair of matched birefringent crystal plates disposed between the rotators. The first birefringent crystal end-plate functions as a dividing and combining means for dividing a beam into two beams of orthogonal electric filed vectors from different paths into one on the same path. The pair of matched birefringent crystal plates serve as beam path determining means shifting a beam to a different direction depending on the direction of the electric filed vector and the propagation. The pair of crystal plates are substantially identical but oppositely oriented, such that the pair of means have opposite beam shifted directions.
CA002148317A 1995-05-01 1995-05-01 Optical circulator Expired - Fee Related CA2148317C (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
CA002148317A CA2148317C (en) 1995-05-01 1995-05-01 Optical circulator
US08/442,368 US5574596A (en) 1995-05-01 1995-05-16 Optical circulator

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CA002148317A CA2148317C (en) 1995-05-01 1995-05-01 Optical circulator

Publications (2)

Publication Number Publication Date
CA2148317A1 true CA2148317A1 (en) 1996-11-02
CA2148317C CA2148317C (en) 1998-05-05

Family

ID=4155764

Family Applications (1)

Application Number Title Priority Date Filing Date
CA002148317A Expired - Fee Related CA2148317C (en) 1995-05-01 1995-05-01 Optical circulator

Country Status (2)

Country Link
US (1) US5574596A (en)
CA (1) CA2148317C (en)

Families Citing this family (51)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5471340A (en) * 1994-01-07 1995-11-28 Jds Fitel Inc. Reflective optical non-reciprocal devices
JPH0990279A (en) * 1995-09-20 1997-04-04 Nec Corp Polarization independent type optical isolator and optical circulator
AUPN714295A0 (en) * 1995-12-14 1996-01-11 Photonic Technologies Pty Ltd Fibre optic circulator
JP2982691B2 (en) * 1996-06-04 1999-11-29 日本電気株式会社 Waveguide type optical circulator
US6115155A (en) 1996-10-29 2000-09-05 Chorum Technologies Inc. System for dealing with faults in an optical link
US6545783B1 (en) 1996-10-29 2003-04-08 Chorum Technologies Lp Optical wavelength add/drop multiplexer
US6163393A (en) 1996-10-29 2000-12-19 Chorum Technologies Inc. Method and apparatus for wavelength multipexing/demultiplexing
US6847786B2 (en) 1996-10-29 2005-01-25 Ec-Optics Technology, Inc. Compact wavelength filter using optical birefringence and reflective elements
US6026202A (en) * 1997-02-25 2000-02-15 Hewlett-Packard Company Compact, low crosstalk, three-port optical circulator
US5930418A (en) * 1997-02-25 1999-07-27 Hewlett-Packard Company Optical assembly and method based on TEC fibres
US6011649A (en) * 1997-09-03 2000-01-04 Hewlett-Packard Company Optical assembly and method for high performance coupling
US6239900B1 (en) 1997-09-19 2001-05-29 Nz Applied Technologies Corp. Reflective fiber-optic isolator
US6043933A (en) * 1997-11-21 2000-03-28 Hewlett-Packard Company Split optical element and a low cost fabrication approach
US5930039A (en) 1997-12-08 1999-07-27 U.S.A Kaifa Technology, Inc. Optical circulator
US5909310A (en) * 1997-12-08 1999-06-01 U.S.A Kaifa Technology, Inc. Optical circulator
US6088491A (en) * 1998-02-13 2000-07-11 Agilent Technologies, Inc. Optical circulator
US6118910A (en) * 1998-05-19 2000-09-12 Agilent Technologies, Inc. Method of aligning optical fibers to a multi-port optical assembly
US6075642A (en) * 1998-06-18 2000-06-13 Hewlett-Packard Company Multi-port optical isolator
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
US5973832A (en) * 1998-10-19 1999-10-26 Uniphase Corporation High performance optical circulators
US6154581A (en) * 1998-10-27 2000-11-28 Adc Telecommunications, Inc. Multiple port, fiber optic circulator
US6212008B1 (en) 1998-11-13 2001-04-03 New Focus, Inc. Compact polarization insensitive circulators with simplified structure and low polarization mode dispersion
US6049427A (en) * 1999-02-19 2000-04-11 Jds Uniphase Corporation Optical device arrangements utilizing simultaneous orthogonal walkoff elements
WO2000049450A2 (en) * 1999-02-22 2000-08-24 Sigma Optics, Inc. Optical circulator
US6078716A (en) 1999-03-23 2000-06-20 E-Tek Dynamics, Inc. Thermally expanded multiple core fiber
US6246518B1 (en) 1999-03-25 2001-06-12 E-Tek Dynamics, Inc. Reflection type optical isolator
US6246807B1 (en) 1999-04-06 2001-06-12 Adc Telecommunications, Inc. Optical circulator
US6407861B1 (en) 1999-04-06 2002-06-18 Adc Telecommunications, Inc. Adjustable optical circulator
US6374009B1 (en) 1999-05-10 2002-04-16 Jds Uniphase Corporation TEMC fiber based optical switch
US6519060B1 (en) 1999-06-04 2003-02-11 Chorum Technologies Lp Synchronous optical network in frequency domain
US6275623B1 (en) 1999-07-12 2001-08-14 Corning Incorporated Dynamically configurable spectral filter
US6853488B1 (en) 1999-09-23 2005-02-08 Avanex Corporation Reflection-type optical circulator utilizing a lens and birefringent plates
US6236506B1 (en) 1999-09-23 2001-05-22 Avanex Corporation Reflection-type optical circulation utilizing a lens and birefringent plates
US6822793B2 (en) 1999-10-29 2004-11-23 Finisar Corporation Compact polarization insensitive circulators with simplified structure and low polarization mode dispersion
US6687054B2 (en) 2000-06-07 2004-02-03 Cirvine Corporation Apparatus and method for low dispersion in communications
US6693743B2 (en) 2000-06-07 2004-02-17 Cirvine Corporation Birefringent devices
US6781754B2 (en) 2000-06-07 2004-08-24 Cirvine Corporation Interleaver using spatial birefringent elements
US6731430B2 (en) 2000-06-07 2004-05-04 Cirvine Corporation Low crosstalk flat band filter
US6628449B2 (en) 2000-11-01 2003-09-30 Cirvine Corporation Tandem comb filter
US6563641B2 (en) 2000-06-23 2003-05-13 Cirvine Corporation Fold interleaver
JP2002268013A (en) * 2001-03-09 2002-09-18 Furukawa Electric Co Ltd:The Optical circulator
US6809863B2 (en) 2001-06-07 2004-10-26 Cirvine Corporation Low dispersion filters
US6900938B2 (en) 2001-06-25 2005-05-31 Bin Zhao Low dispersion interleaver
US6639707B2 (en) 2001-06-25 2003-10-28 Cirvine Corporation Tandem interleaver
US6515786B1 (en) 2001-08-03 2003-02-04 Chorum Technologies Lp Bandwidth variable wavelength router and method of operation
US6785431B2 (en) * 2002-02-06 2004-08-31 Lightwaves 2020, Inc. Miniature circulator array devices and methods for making the same
US6795242B2 (en) * 2002-02-06 2004-09-21 Lightwaves 2020, Inc. Miniature circulator devices and methods for making the same
US6751366B2 (en) * 2002-02-12 2004-06-15 Oplink Communications, Inc. Multi-port circulator
US6879746B2 (en) * 2002-10-25 2005-04-12 Oplink Communications, Inc. Miniature 2×2 magneto-optic switch
US6956697B2 (en) * 2002-12-20 2005-10-18 Jds Uniphase Inc. Front-end circulator for an optical device

Family Cites Families (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4974944A (en) * 1988-07-21 1990-12-04 Hewlett-Packard Company Optical nonreciprocal device
US4978189A (en) * 1989-11-14 1990-12-18 At&T Bell Laboratories Hybrid optical isolator, circulator or switch, and systems utilizing same
US5237445A (en) * 1990-11-30 1993-08-17 Shimadzu Corporation Optical isolator
DE69121176T2 (en) * 1990-12-17 1997-01-09 Nippon Telegraph & Telephone Optical circulator
US5381261A (en) * 1991-02-20 1995-01-10 Sumitomo Electric Industries, Ltd. Optical isolator
US5212586A (en) * 1991-11-26 1993-05-18 Optics For Research Optical circulator having a simplified construction
US5319483A (en) * 1992-12-04 1994-06-07 Williams Telecommunications Group, Inc. Polarization independent low cross-talk optical circulator
JP2565099B2 (en) * 1993-08-09 1996-12-18 日本電気株式会社 Optical non-reciprocal circuit
US5499307A (en) * 1993-10-13 1996-03-12 Tdk Corporation Optical isolator and polarization splitter therefor
US5471340A (en) * 1994-01-07 1995-11-28 Jds Fitel Inc. Reflective optical non-reciprocal devices

Also Published As

Publication number Publication date
CA2148317C (en) 1998-05-05
US5574596A (en) 1996-11-12

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