JPS56137307A - Optical branching filter - Google Patents

Optical branching filter

Info

Publication number
JPS56137307A
JPS56137307A JP4136580A JP4136580A JPS56137307A JP S56137307 A JPS56137307 A JP S56137307A JP 4136580 A JP4136580 A JP 4136580A JP 4136580 A JP4136580 A JP 4136580A JP S56137307 A JPS56137307 A JP S56137307A
Authority
JP
Japan
Prior art keywords
light
wavelength
plate
plane
polarization
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
JP4136580A
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 JP4136580A priority Critical patent/JPS56137307A/en
Publication of JPS56137307A publication Critical patent/JPS56137307A/en
Pending 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
    • G02B6/2706—Optical coupling means with polarisation selective and adjusting means as bulk elements, i.e. free space arrangements external to a light guide, e.g. polarising beam splitters
    • G02B6/2713—Optical coupling means with polarisation selective and adjusting means as bulk elements, i.e. free space arrangements external to a light guide, e.g. polarising beam splitters cascade of polarisation selective or adjusting operations
    • G02B6/272—Optical coupling means with polarisation selective and adjusting means as bulk elements, i.e. free space arrangements external to a light guide, e.g. polarising beam splitters cascade of polarisation selective or adjusting operations comprising polarisation means for beam splitting and combining
    • 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
    • G02B6/2753—Optical coupling means with polarisation selective and adjusting means characterised by their function or use, i.e. of the complete device
    • G02B6/2773—Polarisation splitting or combining
    • 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
    • G02B6/28—Optical coupling means having data bus means, i.e. plural waveguides interconnected and providing an inherently bidirectional system by mixing and splitting signals
    • G02B6/293—Optical coupling means having data bus means, i.e. plural waveguides interconnected and providing an inherently bidirectional system by mixing and splitting signals with wavelength selective means
    • G02B6/29346—Optical coupling means having data bus means, i.e. plural waveguides interconnected and providing an inherently bidirectional system by mixing and splitting signals with wavelength selective means operating by wave or beam interference
    • G02B6/2935—Mach-Zehnder configuration, i.e. comprising separate splitting and combining means

Abstract

PURPOSE:To perform light branching which does not depend upon the polarization characteristics of propagating light by combining a phase difference plate and polarized light separating elements. CONSTITUTION:A phase difference plate 21 made of a crystal having the optical anisotropy acting as a 1/2-wavelength plate for the light of a certain lambda1 wavelength, and acting as a 1-wavelength light for another lambda2 wavelength is disposed together with polarized light separating elements 19, 20 and reflection mirros 22, 23. The light of the lambda1 wavelength emitted from an optical fiber 11 is rotated of the plane of linear polarization by 90 deg. by passing the plate 21; therefore, the linearly polarized light parallel to the plane of the figure enters an optical fiber 12 in the route of the element 19, the plate 21, and a polarization prism 20, and the linearly polarized light perpendicular thereto arrives at the fiber 12 similarly in the route of the element 19, the mirror 22, the plate 21, the mirror 23 and the prism 20. Since the light of another lambda2 wavelength is not subjected to rotation of the plane of polarization, the linearly polarized rays parallel and perpendicular to the plane of the figure arrive at an optical fiber 13 respectively in the above-mentioned two routes.
JP4136580A 1980-03-31 1980-03-31 Optical branching filter Pending JPS56137307A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP4136580A JPS56137307A (en) 1980-03-31 1980-03-31 Optical branching filter

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP4136580A JPS56137307A (en) 1980-03-31 1980-03-31 Optical branching filter

Publications (1)

Publication Number Publication Date
JPS56137307A true JPS56137307A (en) 1981-10-27

Family

ID=12606426

Family Applications (1)

Application Number Title Priority Date Filing Date
JP4136580A Pending JPS56137307A (en) 1980-03-31 1980-03-31 Optical branching filter

Country Status (1)

Country Link
JP (1) JPS56137307A (en)

Cited By (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4702548A (en) * 1984-02-29 1987-10-27 Fujikura Ltd. Apparatus for separating or synthesizing light signals
EP0488211A2 (en) * 1990-11-27 1992-06-03 Fujitsu Limited Polarization independent optical device
US5212594A (en) * 1990-12-07 1993-05-18 Roke Manor Research Limited Rotatable joints for communication lines
US6091462A (en) * 1989-10-30 2000-07-18 The Board Of Regents Of The University Of Colorado Split-element liquid crystal tunable optical filter
US6141071A (en) * 1995-10-30 2000-10-31 Colorlink, Inc. Switchable achromatic polarization rotator
US6172722B1 (en) 1996-11-25 2001-01-09 Colorlink, Inc. Chromaticity compensating liquid crystal filter
US6183091B1 (en) 1995-04-07 2001-02-06 Colorlink, Inc. Color imaging systems and methods
US6273571B1 (en) 1995-05-23 2001-08-14 Colorlink, Inc. Display architectures using an electronically controlled optical retarder stack
US6310673B1 (en) 1995-05-23 2001-10-30 University Technology Corporation Transmissive optical polarizing filters designed to maximize a desired portion of a spectral output
US6380997B1 (en) 1995-04-07 2002-04-30 Colorlink, Inc. Achromatic polarization inverters for displaying inverse frames in DC balanced liquid crystal displays
US6417892B1 (en) 1995-05-23 2002-07-09 Colorlink, Inc. Color filters, sequencers and displays using color selective light modulators
US6452646B1 (en) 1995-05-23 2002-09-17 Colorlink, Inc. Optical retarder stack formed of multiple retarder sheets
US6707516B1 (en) 1995-05-23 2004-03-16 Colorlink, Inc. Single-panel field-sequential color display systems
US6882384B1 (en) 1995-05-23 2005-04-19 Colorlink, Inc. Color filters and sequencers using color selective light modulators
EP1639397A2 (en) * 2003-02-27 2006-03-29 Bioscan Ltd. System for recovering input polarization state of optical beam atproportional intensity

Cited By (21)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4702548A (en) * 1984-02-29 1987-10-27 Fujikura Ltd. Apparatus for separating or synthesizing light signals
US6091462A (en) * 1989-10-30 2000-07-18 The Board Of Regents Of The University Of Colorado Split-element liquid crystal tunable optical filter
EP0488211A2 (en) * 1990-11-27 1992-06-03 Fujitsu Limited Polarization independent optical device
US5377040A (en) * 1990-11-27 1994-12-27 Fujitsu Limited Polarization independent optical device
US5212594A (en) * 1990-12-07 1993-05-18 Roke Manor Research Limited Rotatable joints for communication lines
US6380997B1 (en) 1995-04-07 2002-04-30 Colorlink, Inc. Achromatic polarization inverters for displaying inverse frames in DC balanced liquid crystal displays
US6899430B2 (en) 1995-04-07 2005-05-31 Colorlink, Inc. Color imaging systems and methods
US6183091B1 (en) 1995-04-07 2001-02-06 Colorlink, Inc. Color imaging systems and methods
US6882384B1 (en) 1995-05-23 2005-04-19 Colorlink, Inc. Color filters and sequencers using color selective light modulators
US6310673B1 (en) 1995-05-23 2001-10-30 University Technology Corporation Transmissive optical polarizing filters designed to maximize a desired portion of a spectral output
US6273571B1 (en) 1995-05-23 2001-08-14 Colorlink, Inc. Display architectures using an electronically controlled optical retarder stack
US6417892B1 (en) 1995-05-23 2002-07-09 Colorlink, Inc. Color filters, sequencers and displays using color selective light modulators
US6452646B1 (en) 1995-05-23 2002-09-17 Colorlink, Inc. Optical retarder stack formed of multiple retarder sheets
US6667784B2 (en) 1995-05-23 2003-12-23 Colorlink, Inc. Color filters, sequencers and displays using color selective light modulators
US6707516B1 (en) 1995-05-23 2004-03-16 Colorlink, Inc. Single-panel field-sequential color display systems
US7511787B2 (en) 1995-05-23 2009-03-31 Real D Color filters and sequencers using color-selective light modulators
US6141071A (en) * 1995-10-30 2000-10-31 Colorlink, Inc. Switchable achromatic polarization rotator
US6172722B1 (en) 1996-11-25 2001-01-09 Colorlink, Inc. Chromaticity compensating liquid crystal filter
EP1639397A2 (en) * 2003-02-27 2006-03-29 Bioscan Ltd. System for recovering input polarization state of optical beam atproportional intensity
EP1639397A4 (en) * 2003-02-27 2006-10-04 Bioscan Ltd System for recovering input polarization state of optical beam atproportional intensity
US7532390B2 (en) 2003-02-27 2009-05-12 Bioscan Ltd. System for recovering input polarization state of optical beam at proportional intensity

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