JPS5630104A - Light attenuator - Google Patents

Light attenuator

Info

Publication number
JPS5630104A
JPS5630104A JP10688279A JP10688279A JPS5630104A JP S5630104 A JPS5630104 A JP S5630104A JP 10688279 A JP10688279 A JP 10688279A JP 10688279 A JP10688279 A JP 10688279A JP S5630104 A JPS5630104 A JP S5630104A
Authority
JP
Japan
Prior art keywords
light
optical fibers
transmission
light signal
optical
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
JP10688279A
Other languages
Japanese (ja)
Inventor
Yosuke Furuta
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.)
Fujitsu Ltd
Original Assignee
Fujitsu 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 Fujitsu Ltd filed Critical Fujitsu Ltd
Priority to JP10688279A priority Critical patent/JPS5630104A/en
Publication of JPS5630104A publication Critical patent/JPS5630104A/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
    • G02B6/264—Optical coupling means with optical elements between opposed fibre ends which perform a function other than beam splitting
    • G02B6/266—Optical coupling means with optical elements between opposed fibre ends which perform a function other than beam splitting the optical element being an attenuator

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Light Guides In General And Applications Therefor (AREA)
  • Optical Couplings Of Light Guides (AREA)

Abstract

PURPOSE:To make construction simple by so opposedly disposing the ends of a pair of optical transmission lines in a manner as to allow the transmission of light signal and interposing a transmission material which attenuates the light signal transmitted therebetween through light diffusion thereby constituting the light attenuator. CONSTITUTION:A pair of optical fibers 7, 7' inserted into and held by optical fiber holders 8, 8' are inserted into a cylindrical body 9, by opposing their end faces to each other. A light transmission member 10 is provided between these opposing faces in such a manner as to closely contact the end faces of the optical fibers 8, 8' or by way of a spacing ring 11. Since the light transmission member 10 is constituted by a diffusing material of light comprising a glass plate coated with fine alumina particles or a resin plate mixed with said fine particles, the light signal transmitting in the optical fibers 7, 7' may be attenuated as specified and may thus be transmitted. Thereby, the construction may be made extremely simple.
JP10688279A 1979-08-22 1979-08-22 Light attenuator Pending JPS5630104A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP10688279A JPS5630104A (en) 1979-08-22 1979-08-22 Light attenuator

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP10688279A JPS5630104A (en) 1979-08-22 1979-08-22 Light attenuator

Publications (1)

Publication Number Publication Date
JPS5630104A true JPS5630104A (en) 1981-03-26

Family

ID=14444864

Family Applications (1)

Application Number Title Priority Date Filing Date
JP10688279A Pending JPS5630104A (en) 1979-08-22 1979-08-22 Light attenuator

Country Status (1)

Country Link
JP (1) JPS5630104A (en)

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS57210309A (en) * 1981-06-01 1982-12-23 Switchcraft Optical fiber coupling apparatus
JPS5880612A (en) * 1981-11-09 1983-05-14 Toyo Tanshi Kk Optical branching device
FR2533323A1 (en) * 1982-09-17 1984-03-23 Thomson Csf Variable optical attenuator device.
EP0161826A2 (en) * 1984-05-11 1985-11-21 Stc Plc Single mode optical fibre attenuators
JPS62121405A (en) * 1985-11-22 1987-06-02 Nec Corp Optical attenuator
JPS6410704U (en) * 1987-07-09 1989-01-20
WO2004003616A3 (en) * 2002-06-27 2004-04-15 Commissariat Energie Atomique Device for automatic centering of a laser beam and method for making same
CN102608756A (en) * 2012-02-08 2012-07-25 南京邮电大学 Voltage controlled adjustable optical attenuator based on microfluidic control optical technology

Cited By (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS57210309A (en) * 1981-06-01 1982-12-23 Switchcraft Optical fiber coupling apparatus
JPH0449686B2 (en) * 1981-06-01 1992-08-12 Switchcraft
JPS5880612A (en) * 1981-11-09 1983-05-14 Toyo Tanshi Kk Optical branching device
JPH0230482B2 (en) * 1981-11-09 1990-07-06 Deyuhon Japan Ltd
FR2533323A1 (en) * 1982-09-17 1984-03-23 Thomson Csf Variable optical attenuator device.
EP0161826A2 (en) * 1984-05-11 1985-11-21 Stc Plc Single mode optical fibre attenuators
EP0161826A3 (en) * 1984-05-11 1986-12-30 Stc Plc Single mode optical fibre attenuators
US4728170A (en) * 1984-05-11 1988-03-01 Standard Telephones And Cables Public Limited Co. Single mode optical fibre attenuators
JPS62121405A (en) * 1985-11-22 1987-06-02 Nec Corp Optical attenuator
JPS6410704U (en) * 1987-07-09 1989-01-20
WO2004003616A3 (en) * 2002-06-27 2004-04-15 Commissariat Energie Atomique Device for automatic centering of a laser beam and method for making same
CN102608756A (en) * 2012-02-08 2012-07-25 南京邮电大学 Voltage controlled adjustable optical attenuator based on microfluidic control optical technology

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