JPS5579402A - Light attenuator - Google Patents

Light attenuator

Info

Publication number
JPS5579402A
JPS5579402A JP15206978A JP15206978A JPS5579402A JP S5579402 A JPS5579402 A JP S5579402A JP 15206978 A JP15206978 A JP 15206978A JP 15206978 A JP15206978 A JP 15206978A JP S5579402 A JPS5579402 A JP S5579402A
Authority
JP
Japan
Prior art keywords
optical fiber
face
deviation
light attenuator
fibers
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
JP15206978A
Other languages
Japanese (ja)
Inventor
Kiyohide Miyake
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.)
Hitachi Ltd
Original Assignee
Hitachi 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 Hitachi Ltd filed Critical Hitachi Ltd
Priority to JP15206978A priority Critical patent/JPS5579402A/en
Publication of JPS5579402A publication Critical patent/JPS5579402A/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)
  • Optical Fibers, Optical Fiber Cores, And Optical Fiber Bundles (AREA)
  • Mechanical Coupling Of Light Guides (AREA)
  • Light Guides In General And Applications Therefor (AREA)
  • Optical Elements Other Than Lenses (AREA)
  • Optical Couplings Of Light Guides (AREA)

Abstract

PURPOSE:To provide the light attenuator of high reliability and easy manufacture by finishing one end face of an optical fiber to a mirror surface, forming a vapor deposition film of metals or the like, contacting this and the other end face in such a manner that there are no spacing deviation, angle deviation and axial deviation and fusion-connecting these. CONSTITUTION:The end face of an optical fiber 11 and the end of another optical fiber 12 are both finished to a mirror surface and a vapor deposition film 13 of metals or the like which attenuates the light waves propagating in the optical fiber is deposited on the fiber 11. These two fibers 11, 12 are so aligned as to have no deviations in the spacing, axis and angle between the end faces of the fibers. Fusion welding by arc discharging is then performed by applying high voltage to a pair of electrodes 14a, 14b. This method enables the stationary light attenuator of relatively easy manufacture and high reliability to be provided.
JP15206978A 1978-12-11 1978-12-11 Light attenuator Pending JPS5579402A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP15206978A JPS5579402A (en) 1978-12-11 1978-12-11 Light attenuator

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP15206978A JPS5579402A (en) 1978-12-11 1978-12-11 Light attenuator

Publications (1)

Publication Number Publication Date
JPS5579402A true JPS5579402A (en) 1980-06-14

Family

ID=15532366

Family Applications (1)

Application Number Title Priority Date Filing Date
JP15206978A Pending JPS5579402A (en) 1978-12-11 1978-12-11 Light attenuator

Country Status (1)

Country Link
JP (1) JPS5579402A (en)

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0074499A2 (en) * 1981-09-15 1983-03-23 Siemens Aktiengesellschaft Optical attenuator
EP0161826A2 (en) * 1984-05-11 1985-11-21 Stc Plc Single mode optical fibre attenuators
US4557556A (en) * 1983-10-28 1985-12-10 At&T Bell Laboratories Method of fabricating an optical attenuator by fusion splicing of optical fibers
US4557557A (en) * 1983-10-28 1985-12-10 At&T Bell Laboratories Method of making an optical fiber attenuator using a lossy fusion splice
US4848999A (en) * 1987-10-13 1989-07-18 Texas A & M University System Method for producing reflective taps in optical fibers and applications thereof
EP0341919A2 (en) * 1988-05-06 1989-11-15 Mitsubishi Rayon Co., Ltd. Light attenuator and process for fabrication thereof
US5285516A (en) * 1992-03-18 1994-02-08 Kaptron, Inc. Fused fiber optic attenuator having axially overlapping fiber end portions

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0074499A2 (en) * 1981-09-15 1983-03-23 Siemens Aktiengesellschaft Optical attenuator
US4557556A (en) * 1983-10-28 1985-12-10 At&T Bell Laboratories Method of fabricating an optical attenuator by fusion splicing of optical fibers
US4557557A (en) * 1983-10-28 1985-12-10 At&T Bell Laboratories Method of making an optical fiber attenuator using a lossy fusion splice
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
US4848999A (en) * 1987-10-13 1989-07-18 Texas A & M University System Method for producing reflective taps in optical fibers and applications thereof
EP0341919A2 (en) * 1988-05-06 1989-11-15 Mitsubishi Rayon Co., Ltd. Light attenuator and process for fabrication thereof
US5285516A (en) * 1992-03-18 1994-02-08 Kaptron, Inc. Fused fiber optic attenuator having axially overlapping fiber end portions

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