JPS54137362A - Optically branching and coupling device and optical attenuator - Google Patents

Optically branching and coupling device and optical attenuator

Info

Publication number
JPS54137362A
JPS54137362A JP4631678A JP4631678A JPS54137362A JP S54137362 A JPS54137362 A JP S54137362A JP 4631678 A JP4631678 A JP 4631678A JP 4631678 A JP4631678 A JP 4631678A JP S54137362 A JPS54137362 A JP S54137362A
Authority
JP
Japan
Prior art keywords
light
liquid crystal
transmitted
composite
core
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
JP4631678A
Other languages
Japanese (ja)
Inventor
Katsuji Hattori
Tsutomu Tanaka
Akimoto Serizawa
Yoshinobu Tsujimoto
Shoichi Fukai
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.)
Panasonic Holdings Corp
Original Assignee
Matsushita Electric Industrial Co Ltd
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 Matsushita Electric Industrial Co Ltd filed Critical Matsushita Electric Industrial Co Ltd
Priority to JP4631678A priority Critical patent/JPS54137362A/en
Publication of JPS54137362A publication Critical patent/JPS54137362A/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)

Abstract

PURPOSE:To electrically and megnetically vary the arrangement of a liquid crystal substance so that the quantity of the light to be transmitted may be varied by sandwitching the liquid crystal substance between the flat portions of the side of an optical fiber. CONSTITUTION:The optical fibers 1 and 2, which are prepared by forming a cladding 4 on a fiber core 3, are bent and fixed by supporting materials 5 and 6. A transparent conductive film 7 is formed on the flat portions A and B of the fibers 1 and 2, which are polished until the core 3 is exposed, and on the supporting materials 5 and 6. A liquid crystal composite 9 of field effect type is homogeneously arranged between the flat portions A and B the gap of which is held at a preset value by means of a spacer 8. As a result, the light having transmitted through the core 3 and reached the flat portion A is not totally reflected to proceed through the portion B so that it may be optically branched or coupled. When the voltage is impressed from a power source 10, the composite 9 is brought into a homeotropic condition, and the light having reached the portion A is totally reflected in the form to leak into the composite 9 so that no light is transmitted to the mating fiber.
JP4631678A 1978-04-18 1978-04-18 Optically branching and coupling device and optical attenuator Pending JPS54137362A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP4631678A JPS54137362A (en) 1978-04-18 1978-04-18 Optically branching and coupling device and optical attenuator

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP4631678A JPS54137362A (en) 1978-04-18 1978-04-18 Optically branching and coupling device and optical attenuator

Publications (1)

Publication Number Publication Date
JPS54137362A true JPS54137362A (en) 1979-10-25

Family

ID=12743753

Family Applications (1)

Application Number Title Priority Date Filing Date
JP4631678A Pending JPS54137362A (en) 1978-04-18 1978-04-18 Optically branching and coupling device and optical attenuator

Country Status (1)

Country Link
JP (1) JPS54137362A (en)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS58193519A (en) * 1982-05-07 1983-11-11 Canon Inc Method and device for optical control
FR2538127A1 (en) * 1982-12-21 1984-06-22 Socapex Optical quadripole and multipole comprising such quadripoles
US4557551A (en) * 1983-09-28 1985-12-10 Andrew Corporation Non-linear optical fiber coupler and a method of making same
US4721352A (en) * 1986-02-26 1988-01-26 The Board Of Trustees Of The Leland Stanford Junior University Polarizing apparatus and method utilizing an optical fiber
EP0263697A2 (en) * 1986-10-07 1988-04-13 BRITISH TELECOMMUNICATIONS public limited company Liquid crystal compositions
WO2003048844A3 (en) * 2001-12-04 2003-10-02 British Tech Group Int Optical fibre switch and method of construction of such a switch

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS58193519A (en) * 1982-05-07 1983-11-11 Canon Inc Method and device for optical control
JPH03605B2 (en) * 1982-05-07 1991-01-08 Canon Kk
FR2538127A1 (en) * 1982-12-21 1984-06-22 Socapex Optical quadripole and multipole comprising such quadripoles
US4557551A (en) * 1983-09-28 1985-12-10 Andrew Corporation Non-linear optical fiber coupler and a method of making same
US4721352A (en) * 1986-02-26 1988-01-26 The Board Of Trustees Of The Leland Stanford Junior University Polarizing apparatus and method utilizing an optical fiber
EP0263697A2 (en) * 1986-10-07 1988-04-13 BRITISH TELECOMMUNICATIONS public limited company Liquid crystal compositions
WO2003048844A3 (en) * 2001-12-04 2003-10-02 British Tech Group Int Optical fibre switch and method of construction of such a switch

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