JPS5685704A - Light attenuator - Google Patents

Light attenuator

Info

Publication number
JPS5685704A
JPS5685704A JP16252279A JP16252279A JPS5685704A JP S5685704 A JPS5685704 A JP S5685704A JP 16252279 A JP16252279 A JP 16252279A JP 16252279 A JP16252279 A JP 16252279A JP S5685704 A JPS5685704 A JP S5685704A
Authority
JP
Japan
Prior art keywords
lenses
sleeve
optical fibers
deviation
end faces
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
JP16252279A
Other languages
Japanese (ja)
Inventor
Masayoshi Shigihara
Takayuki Masuko
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 JP16252279A priority Critical patent/JPS5685704A/en
Publication of JPS5685704A publication Critical patent/JPS5685704A/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)
  • Mechanical Light Control Or Optical Switches (AREA)

Abstract

PURPOSE:To make constitution simple and handling easy by coupling lense respectively to the opposing end faces parting optical fibers, and causing optical axis deviation between the lenses thereby controlling the rate of attenuation of the transmitted light. CONSTITUTION:To attenuate the light signal output transmitted into an optical fiber 5, the adjusting movable screw 2 which is disposed in contact with the other end part of a sleeve 3 opposedly disposed with the optical fibers 5 and 6 respectively coupled with lenses 7 and 8 is turned to push the other end of the sleeve 3 in an arrow direction. And said sleeve 3 is deformed to deflect, whereby an angular deviation in the optical axis is caused between the lenses 7 and 8 coupled to the end faces of the respective optical fibers 5 and 6, and according to this angle deviation, a part of the transmitted light is gently leaked and attenuated between said lenses 7 and 8.
JP16252279A 1979-12-14 1979-12-14 Light attenuator Pending JPS5685704A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP16252279A JPS5685704A (en) 1979-12-14 1979-12-14 Light attenuator

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP16252279A JPS5685704A (en) 1979-12-14 1979-12-14 Light attenuator

Publications (1)

Publication Number Publication Date
JPS5685704A true JPS5685704A (en) 1981-07-13

Family

ID=15756214

Family Applications (1)

Application Number Title Priority Date Filing Date
JP16252279A Pending JPS5685704A (en) 1979-12-14 1979-12-14 Light attenuator

Country Status (1)

Country Link
JP (1) JPS5685704A (en)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS58115401A (en) * 1981-12-28 1983-07-09 Ohkura Electric Co Ltd Mechanical optical modulating device
US4447119A (en) * 1981-11-02 1984-05-08 Gould, Inc. Apparatus for maintaining an optical fiber and a focusing means
US4753511A (en) * 1985-10-07 1988-06-28 Eastman Kodak Company Optical connector and adaptor kit for selective attenuation of signals in optical fiber circuits
US5781341A (en) * 1995-06-30 1998-07-14 Dicon Fiberoptics, Inc. Motorized tunable filter and motorized variable attenuator
US5841915A (en) * 1996-11-04 1998-11-24 Honeywell Inc. Apparatus for determining the effect of modal noise on a communication system by affecting an optical fiber discontinuity

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4447119A (en) * 1981-11-02 1984-05-08 Gould, Inc. Apparatus for maintaining an optical fiber and a focusing means
JPS58115401A (en) * 1981-12-28 1983-07-09 Ohkura Electric Co Ltd Mechanical optical modulating device
US4753511A (en) * 1985-10-07 1988-06-28 Eastman Kodak Company Optical connector and adaptor kit for selective attenuation of signals in optical fiber circuits
US5781341A (en) * 1995-06-30 1998-07-14 Dicon Fiberoptics, Inc. Motorized tunable filter and motorized variable attenuator
US5841915A (en) * 1996-11-04 1998-11-24 Honeywell Inc. Apparatus for determining the effect of modal noise on a communication system by affecting an optical fiber discontinuity

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