JPS5727234A - Light controlling element - Google Patents

Light controlling element

Info

Publication number
JPS5727234A
JPS5727234A JP10244680A JP10244680A JPS5727234A JP S5727234 A JPS5727234 A JP S5727234A JP 10244680 A JP10244680 A JP 10244680A JP 10244680 A JP10244680 A JP 10244680A JP S5727234 A JPS5727234 A JP S5727234A
Authority
JP
Japan
Prior art keywords
crystal
liq
fibers
light propagating
transparent electrodes
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
JP10244680A
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 JP10244680A priority Critical patent/JPS5727234A/en
Publication of JPS5727234A publication Critical patent/JPS5727234A/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

Landscapes

  • Physics & Mathematics (AREA)
  • Nonlinear Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • General Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Liquid Crystal (AREA)
  • Optical Couplings Of Light Guides (AREA)
  • Optical Communication System (AREA)
  • Light Guides In General And Applications Therefor (AREA)

Abstract

PURPOSE:To control the intensity or phase of light propagating through an optical fiber by holding a liq. crystal between ends of two optical fibers with transparent electrodes attached and applying an electric field to the crystal through the electrodes. CONSTITUTION:Transparent electrodes 3a, 3b are attached to ends of optical fibers 1a, 1b having core parts 2a, 2b, respectively. They are electrically connected to a driving power source 4 through the sides of the fibers 1a, 1b and a switch SW. A liq. crystal is sealed between both the ends of the fibers 1a, 1b. When the liq. crystal is a TN type one, the polarizing direction of light propagating through one of the fibers can be controlled. The liq. crystal substance is almost equal to high silica glass as the material of the fibers in refractive index, and the liq. crystal layer having about 10mum thickness acts as matching oil. When a cholesteric liq. crystal is used, it can be allowed to fulfil the function of a band pass filter.
JP10244680A 1980-07-28 1980-07-28 Light controlling element Pending JPS5727234A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP10244680A JPS5727234A (en) 1980-07-28 1980-07-28 Light controlling element

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP10244680A JPS5727234A (en) 1980-07-28 1980-07-28 Light controlling element

Publications (1)

Publication Number Publication Date
JPS5727234A true JPS5727234A (en) 1982-02-13

Family

ID=14327687

Family Applications (1)

Application Number Title Priority Date Filing Date
JP10244680A Pending JPS5727234A (en) 1980-07-28 1980-07-28 Light controlling element

Country Status (1)

Country Link
JP (1) JPS5727234A (en)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS63193750A (en) * 1987-02-06 1988-08-11 Nippon Telegr & Teleph Corp <Ntt> Method for maintaining and testing subscriber optical line network
JPH01224899A (en) * 1988-03-04 1989-09-07 Chubu Electric Power Co Inc Power transmission line information collecting system
JPH01292314A (en) * 1988-05-20 1989-11-24 Fuji Xerox Co Ltd Optical modulating element and method of reading out electrostatic image by using said element
EP0783127A1 (en) * 1996-01-08 1997-07-09 France Telecom Electro-optic phase modulator for single mode optical fibre
EP0926536A1 (en) * 1997-12-23 1999-06-30 BRITISH TELECOMMUNICATIONS public limited company Tunable optical device

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS63193750A (en) * 1987-02-06 1988-08-11 Nippon Telegr & Teleph Corp <Ntt> Method for maintaining and testing subscriber optical line network
JPH01224899A (en) * 1988-03-04 1989-09-07 Chubu Electric Power Co Inc Power transmission line information collecting system
JPH01292314A (en) * 1988-05-20 1989-11-24 Fuji Xerox Co Ltd Optical modulating element and method of reading out electrostatic image by using said element
EP0783127A1 (en) * 1996-01-08 1997-07-09 France Telecom Electro-optic phase modulator for single mode optical fibre
FR2743428A1 (en) * 1996-01-08 1997-07-11 Dupont Laurent ELECTRO-OPTICAL PHASE MODULATOR FOR SINGLE-MODE FIBER OPTICS
EP0926536A1 (en) * 1997-12-23 1999-06-30 BRITISH TELECOMMUNICATIONS public limited company Tunable optical device
WO1999034249A1 (en) * 1997-12-23 1999-07-08 British Telecommunications Public Limited Company Tunable optical device

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