JPS5646210A - Optical switch - Google Patents

Optical switch

Info

Publication number
JPS5646210A
JPS5646210A JP12081479A JP12081479A JPS5646210A JP S5646210 A JPS5646210 A JP S5646210A JP 12081479 A JP12081479 A JP 12081479A JP 12081479 A JP12081479 A JP 12081479A JP S5646210 A JPS5646210 A JP S5646210A
Authority
JP
Japan
Prior art keywords
polarized light
light
incident
prism
optical fiber
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
JP12081479A
Other languages
Japanese (ja)
Other versions
JPS5810731B2 (en
Inventor
Takaichi Watanabe
Takao Matsumoto
Kiyoshi Nosu
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.)
Nippon Telegraph and Telephone Corp
Original Assignee
Nippon Telegraph and Telephone 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 Nippon Telegraph and Telephone Corp filed Critical Nippon Telegraph and Telephone Corp
Priority to JP54120814A priority Critical patent/JPS5810731B2/en
Publication of JPS5646210A publication Critical patent/JPS5646210A/en
Publication of JPS5810731B2 publication Critical patent/JPS5810731B2/en
Expired 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 
    • G02F1/13—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 liquid crystals, e.g. single liquid crystal display cells
    • G02F1/1326—Liquid crystal optical waveguides or liquid crystal cells specially adapted for gating or modulating between optical waveguides

Landscapes

  • Physics & Mathematics (AREA)
  • Nonlinear Science (AREA)
  • Liquid Crystal (AREA)
  • Chemical & Material Sciences (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • General Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)

Abstract

PURPOSE:To obtain a perfect-operation optical switch that permits nearyl 100% incident light to pass through liquid crystal, by providing a prism, lens, half- wavelength plate, glass plate, and anisotropic crystal. CONSTITUTION:Parallel light passed through rod lens 21 is separated through anisotropic crystal 71 into polarized light P parallel to a paper face and perpendicular polarized light and polarized light S is converted by half-wavelength plate 81 into polarized light P, which strikes prism 31. On the other hand, polarized light P, having its optical path bent by anisotropic crystal 71, is incident to prism 31 by way of glass plate 91. Thus, polarized light of light incident to prism 31 all becomes polarized light P. While no voltage is applied to clear electrode 5, the light incident to liquid crystal 4 is totallt reflected. Then, polarized light P having passed through half-wavelength plate 81 and polarized light P having passed through glass plate 91 are both led to multimode optical fiber I3 and almost all incident light from multimode optical fiber I1 is taken out of optical fiber I3. Once a voltage is applied, it is led out of optical fiber I4.
JP54120814A 1979-09-21 1979-09-21 light switch Expired JPS5810731B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP54120814A JPS5810731B2 (en) 1979-09-21 1979-09-21 light switch

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP54120814A JPS5810731B2 (en) 1979-09-21 1979-09-21 light switch

Publications (2)

Publication Number Publication Date
JPS5646210A true JPS5646210A (en) 1981-04-27
JPS5810731B2 JPS5810731B2 (en) 1983-02-26

Family

ID=14795627

Family Applications (1)

Application Number Title Priority Date Filing Date
JP54120814A Expired JPS5810731B2 (en) 1979-09-21 1979-09-21 light switch

Country Status (1)

Country Link
JP (1) JPS5810731B2 (en)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5854322A (en) * 1981-09-07 1983-03-31 エヌ・ベ−・フイリツプス・フル−イランペンフアブリケン Light switch
JPS58106526A (en) * 1981-12-19 1983-06-24 Nippon Telegr & Teleph Corp <Ntt> Optical branching circuit
JPH0227311A (en) * 1988-07-15 1990-01-30 Matsushita Electric Ind Co Ltd Optical terminal station equipment
US6437762B1 (en) 1995-01-11 2002-08-20 William A. Birdwell Dynamic diffractive optical transform
WO2005040902A1 (en) * 2003-10-17 2005-05-06 Mbda Uk Limited Switchable coupling

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS55156915A (en) * 1979-02-21 1980-12-06 Sperry Rand Corp Liquid crystal switching matrix

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS55156915A (en) * 1979-02-21 1980-12-06 Sperry Rand Corp Liquid crystal switching matrix

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5854322A (en) * 1981-09-07 1983-03-31 エヌ・ベ−・フイリツプス・フル−イランペンフアブリケン Light switch
JPS58106526A (en) * 1981-12-19 1983-06-24 Nippon Telegr & Teleph Corp <Ntt> Optical branching circuit
JPS6235657B2 (en) * 1981-12-19 1987-08-03 Nippon Denshin Denwa Kk
JPH0227311A (en) * 1988-07-15 1990-01-30 Matsushita Electric Ind Co Ltd Optical terminal station equipment
US6437762B1 (en) 1995-01-11 2002-08-20 William A. Birdwell Dynamic diffractive optical transform
US7009581B2 (en) 1995-01-11 2006-03-07 Birdwell William A Dynamic diffractive optical transform
WO2005040902A1 (en) * 2003-10-17 2005-05-06 Mbda Uk Limited Switchable coupling
US7428036B2 (en) 2003-10-17 2008-09-23 Mbda Uk Limited Liquid crystal switchable coupler for coupling at least two unpolarized light inputs

Also Published As

Publication number Publication date
JPS5810731B2 (en) 1983-02-26

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