JPS56137327A - Optical circulator - Google Patents

Optical circulator

Info

Publication number
JPS56137327A
JPS56137327A JP4132180A JP4132180A JPS56137327A JP S56137327 A JPS56137327 A JP S56137327A JP 4132180 A JP4132180 A JP 4132180A JP 4132180 A JP4132180 A JP 4132180A JP S56137327 A JPS56137327 A JP S56137327A
Authority
JP
Japan
Prior art keywords
polarization
polarizing
rotated
fiber
light
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.)
Pending
Application number
JP4132180A
Other languages
Japanese (ja)
Inventor
Teruhito Matsui
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.)
Mitsubishi Electric Corp
Original Assignee
Mitsubishi Electric Corp
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 Mitsubishi Electric Corp filed Critical Mitsubishi Electric Corp
Priority to JP4132180A priority Critical patent/JPS56137327A/en
Publication of JPS56137327A publication Critical patent/JPS56137327A/en
Pending 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
    • 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

Abstract

PURPOSE:To obtain an optical circulator independent of the polarization of incident light by separating light into linear polarizations having polarizing faces perpendicular to each other and carrying out processing. CONSTITUTION:Light emitted from optical fiber 11 passes through lens 15 and is separated into P polarization parallel to the incident face and S polarization perpendicular to it with polarizing and separating element 19. The P polarization is transmitted, and the S polarization is reflected. The polarizing face of the P polarization is then rotated with Faraday effect element 21 and 45 deg.C optical rotation element 22 by 45 deg.C each, that is, 90 deg.C, and the polarization is reflected by polarizing and separating element 20 toward optical fiber 12 as S polarization. The polarizing face of said S polarization is also rotated by 90 deg.C with elements 21, 22, and the polarization enters fiber 12 as P polarization to element 20. On the other hand, light emerging from fiber 12 is not polarized and rotated with elements 22, 21 and couples with optical fiber 13.
JP4132180A 1980-03-31 1980-03-31 Optical circulator Pending JPS56137327A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP4132180A JPS56137327A (en) 1980-03-31 1980-03-31 Optical circulator

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP4132180A JPS56137327A (en) 1980-03-31 1980-03-31 Optical circulator

Publications (1)

Publication Number Publication Date
JPS56137327A true JPS56137327A (en) 1981-10-27

Family

ID=12605246

Family Applications (1)

Application Number Title Priority Date Filing Date
JP4132180A Pending JPS56137327A (en) 1980-03-31 1980-03-31 Optical circulator

Country Status (1)

Country Link
JP (1) JPS56137327A (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5223975A (en) * 1988-11-11 1993-06-29 Fujitsu Limited Polarization beam coupler including a splitter for producing an output monitor beam
US5319483A (en) * 1992-12-04 1994-06-07 Williams Telecommunications Group, Inc. Polarization independent low cross-talk optical circulator
US5499132A (en) * 1992-05-13 1996-03-12 Matsushita Electric Industrial Co., Ltd. Optical passive components
US6487014B2 (en) * 1996-08-12 2002-11-26 National Research Council Of Canada High isolation optical switch, isolator or circulator having thin film polarizing beam-splitters

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5223975A (en) * 1988-11-11 1993-06-29 Fujitsu Limited Polarization beam coupler including a splitter for producing an output monitor beam
US5499132A (en) * 1992-05-13 1996-03-12 Matsushita Electric Industrial Co., Ltd. Optical passive components
US5319483A (en) * 1992-12-04 1994-06-07 Williams Telecommunications Group, Inc. Polarization independent low cross-talk optical circulator
US6487014B2 (en) * 1996-08-12 2002-11-26 National Research Council Of Canada High isolation optical switch, isolator or circulator having thin film polarizing beam-splitters

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