JPS57142622A - Photoswitch - Google Patents

Photoswitch

Info

Publication number
JPS57142622A
JPS57142622A JP2783181A JP2783181A JPS57142622A JP S57142622 A JPS57142622 A JP S57142622A JP 2783181 A JP2783181 A JP 2783181A JP 2783181 A JP2783181 A JP 2783181A JP S57142622 A JPS57142622 A JP S57142622A
Authority
JP
Japan
Prior art keywords
light
electrodes
optical waveguide
voltage
waveguide film
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
JP2783181A
Other languages
Japanese (ja)
Inventor
Masao Kawachi
Katsunari Okamoto
Takao Edahiro
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 JP2783181A priority Critical patent/JPS57142622A/en
Publication of JPS57142622A publication Critical patent/JPS57142622A/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 
    • G02F1/13—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
    • 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
    • G02F1/29—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 position or the direction of light beams, i.e. deflection
    • G02F1/31—Digital deflection, i.e. optical switching
    • G02F1/313—Digital deflection, i.e. optical switching in an optical waveguide structure
    • G02F1/3137—Digital deflection, i.e. optical switching in an optical waveguide structure with intersecting or branching waveguides, e.g. X-switches and Y-junctions

Landscapes

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

Abstract

PURPOSE:To make the reduction in size, the driving on lower voltage and the integration with other optical circuit elements possible by changing the molecular orientation of a liquid crystal layer partially thereby controlling the confinement effect of the light propagating in the optical waveguide film. CONSTITUTION:If beltlike electrodes 4a, 4b, 4c of a Y shape are provided to a substrate 5, and voltage is applied between 4a, 4b out of said electrodes and a transparent electrode 2, only those in the lower parts of the 4a, 4b out of liquid crystal molecules 6 orient perpendicularly to the wall surface, and the equivalent refractive index of the parts corresponding to th lower parts of the 4a, 4b out of an optical waveguide film 1 is increased by this phenomenon and therefore the light which has the polarization direction of 7b and is made incident from the direction of the 7 shown in the figure is confined in the optical waveguide film parts in the lower part of the 4a, 4b, and emits in the direction of 2. When voltage is applied between the electrodes 4a, 4b and the electrode 2, the light emits in the direction of the 9 shown in the figure in the same manner, thus switching of the light is made possible.
JP2783181A 1981-02-27 1981-02-27 Photoswitch Pending JPS57142622A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2783181A JPS57142622A (en) 1981-02-27 1981-02-27 Photoswitch

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2783181A JPS57142622A (en) 1981-02-27 1981-02-27 Photoswitch

Publications (1)

Publication Number Publication Date
JPS57142622A true JPS57142622A (en) 1982-09-03

Family

ID=12231879

Family Applications (1)

Application Number Title Priority Date Filing Date
JP2783181A Pending JPS57142622A (en) 1981-02-27 1981-02-27 Photoswitch

Country Status (1)

Country Link
JP (1) JPS57142622A (en)

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS63235904A (en) * 1987-03-24 1988-09-30 Seiko Epson Corp Waveguide type grating element
JPH0315831A (en) * 1989-06-14 1991-01-24 Matsushita Electric Ind Co Ltd Light deflecting element
JPH04504473A (en) * 1989-02-07 1992-08-06 イー・アイ・デュポン・ドゥ・ヌムール・アンド・カンパニー light switch
US5381251A (en) * 1992-04-07 1995-01-10 Sharp Kabushiki Kaisha Optical switch element and a liquid crystal light directional coupler used in the optical switch element
US5455883A (en) * 1992-04-07 1995-10-03 Sharp Kabushiki Kaisha Optical wave guide and an optical input device, fabrication methods thereof, and a liquid crystal display apparatus using the optical wave guide and the optical input device
EP1054288A2 (en) * 1999-05-21 2000-11-22 Agilent Technologies Inc. Programmable light path device
EP1061406A2 (en) * 1999-06-16 2000-12-20 Agilent Technologies Inc A polarization independent light switching device based on liquid crystal
US6754408B2 (en) * 2000-10-23 2004-06-22 Sony Corporation Optical switch and display unit

Cited By (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS63235904A (en) * 1987-03-24 1988-09-30 Seiko Epson Corp Waveguide type grating element
JPH04504473A (en) * 1989-02-07 1992-08-06 イー・アイ・デュポン・ドゥ・ヌムール・アンド・カンパニー light switch
JPH0315831A (en) * 1989-06-14 1991-01-24 Matsushita Electric Ind Co Ltd Light deflecting element
US5381251A (en) * 1992-04-07 1995-01-10 Sharp Kabushiki Kaisha Optical switch element and a liquid crystal light directional coupler used in the optical switch element
US5455883A (en) * 1992-04-07 1995-10-03 Sharp Kabushiki Kaisha Optical wave guide and an optical input device, fabrication methods thereof, and a liquid crystal display apparatus using the optical wave guide and the optical input device
US5589961A (en) * 1992-04-07 1996-12-31 Sharp Kabushiki Kaisha Optical wave guide driven liquid crystal display employing optical switching for input
EP1054288A2 (en) * 1999-05-21 2000-11-22 Agilent Technologies Inc. Programmable light path device
EP1054288A3 (en) * 1999-05-21 2002-04-10 Agilent Technologies, Inc. (a Delaware corporation) Programmable light path device
EP1061406A2 (en) * 1999-06-16 2000-12-20 Agilent Technologies Inc A polarization independent light switching device based on liquid crystal
JP2001013471A (en) * 1999-06-16 2001-01-19 Agilent Technol Inc Light guide element
EP1061406A3 (en) * 1999-06-16 2004-01-28 Agilent Technologies, Inc. (a Delaware corporation) A polarization independent light switching device based on liquid crystal
US6754408B2 (en) * 2000-10-23 2004-06-22 Sony Corporation Optical switch and display unit
US6895138B2 (en) * 2000-10-23 2005-05-17 Sony Corporation Optical switch and display unit

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