JPS57179803A - Light attenuator - Google Patents

Light attenuator

Info

Publication number
JPS57179803A
JPS57179803A JP56065507A JP6550781A JPS57179803A JP S57179803 A JPS57179803 A JP S57179803A JP 56065507 A JP56065507 A JP 56065507A JP 6550781 A JP6550781 A JP 6550781A JP S57179803 A JPS57179803 A JP S57179803A
Authority
JP
Japan
Prior art keywords
light
support
attenuation
light attenuator
attenuator
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
JP56065507A
Other languages
Japanese (ja)
Inventor
Takashi Takashima
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 JP56065507A priority Critical patent/JPS57179803A/en
Publication of JPS57179803A publication Critical patent/JPS57179803A/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
    • G02B6/28—Optical coupling means having data bus means, i.e. plural waveguides interconnected and providing an inherently bidirectional system by mixing and splitting signals
    • G02B6/2804—Optical coupling means having data bus means, i.e. plural waveguides interconnected and providing an inherently bidirectional system by mixing and splitting signals forming multipart couplers without wavelength selective elements, e.g. "T" couplers, star couplers
    • G02B6/2817—Optical coupling means having data bus means, i.e. plural waveguides interconnected and providing an inherently bidirectional system by mixing and splitting signals forming multipart couplers without wavelength selective elements, e.g. "T" couplers, star couplers using reflective elements to split or combine optical signals
    • 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

Abstract

PURPOSE:To enable adjustment of light attenuation by inserting a light attenuator element using a thin metallic film into a support allowing free putting in and out. CONSTITUTION:A support 12 has a hole for putting in and out a light attenuator element in the center, and optical fibers 10, 11 are inserted and bonded at the center. Both end faces of the support 12 are polished and mirror finished to connect photo-connectors. The light attenuator element is made by polishing a glass plate 8 obliquely and evaporating a thin metallic film on the slanted face. It is interchangeable like a cartridge and some attenuator elements different in attenuation are provided. A light attenuator element having specified light attenuation is selected by measuring the amount of light attenuation inserting the light attenuator elements into the support 12 and introducing light. Then, the element is fixed by filling bonding agent 13.
JP56065507A 1981-04-30 1981-04-30 Light attenuator Pending JPS57179803A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP56065507A JPS57179803A (en) 1981-04-30 1981-04-30 Light attenuator

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP56065507A JPS57179803A (en) 1981-04-30 1981-04-30 Light attenuator

Publications (1)

Publication Number Publication Date
JPS57179803A true JPS57179803A (en) 1982-11-05

Family

ID=13289043

Family Applications (1)

Application Number Title Priority Date Filing Date
JP56065507A Pending JPS57179803A (en) 1981-04-30 1981-04-30 Light attenuator

Country Status (1)

Country Link
JP (1) JPS57179803A (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6094603U (en) * 1983-12-02 1985-06-27 セイコーインスツルメンツ株式会社 Optical fiber filter device
JPH01101201U (en) * 1987-12-26 1989-07-07
JPH02100003A (en) * 1988-10-07 1990-04-12 Honda Tsushin Kogyo Kk Optical transmission member
JPH02267501A (en) * 1989-04-08 1990-11-01 Fujikura Ltd Connector ferrule with filter of optical fiber and its manufacture

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6094603U (en) * 1983-12-02 1985-06-27 セイコーインスツルメンツ株式会社 Optical fiber filter device
JPH01101201U (en) * 1987-12-26 1989-07-07
JPH02100003A (en) * 1988-10-07 1990-04-12 Honda Tsushin Kogyo Kk Optical transmission member
JPH02267501A (en) * 1989-04-08 1990-11-01 Fujikura Ltd Connector ferrule with filter of optical fiber and its manufacture

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