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JPS6438721A - Branching ratio variable type optical fiber coupler - Google Patents

Branching ratio variable type optical fiber coupler

Info

Publication number
JPS6438721A
JPS6438721A JP19472587A JP19472587A JPS6438721A JP S6438721 A JPS6438721 A JP S6438721A JP 19472587 A JP19472587 A JP 19472587A JP 19472587 A JP19472587 A JP 19472587A JP S6438721 A JPS6438721 A JP S6438721A
Authority
JP
Japan
Prior art keywords
part
branching ratio
metallic coating
optical fibers
optical fiber
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
JP19472587A
Inventor
Suehiro Miyamoto
Noboru Kawakami
Takao Shioda
Takeru Fukuda
Original Assignee
Fujikura 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 Fujikura Ltd filed Critical Fujikura Ltd
Priority to JP19472587A priority Critical patent/JPS6438721A/en
Publication of JPS6438721A publication Critical patent/JPS6438721A/en
Application status is Pending legal-status Critical

Links

Abstract

PURPOSE:To simply adjust a branching ratio by welding and drawing plural pieces of optical fibers in a branch shape, performing metallic coating to a welded and coupled part, and changing a current value by a voltage applied to this part. CONSTITUTION:A welded and coupled part A of two pieces of optical fibers 11, 11 are formed in the same way as usual, and to the outside periphery of the optical fibers 11, 11 of this coupled part A, metallic coating 14 of aluminum, etc. is performed, and a variable DC power source 15 is applied between suitably separated parts of this metallic coating 14 part. Accordingly, the metallic coating 14 part is heated, the coating metal expands and a glass part of the optical fiber 11 also extends, a deformation is generated in the coupler and a branching ratio is varied. In such a way, by varying a current value by an applied voltage, the branching ratio can be changed easily.
JP19472587A 1987-08-04 1987-08-04 Branching ratio variable type optical fiber coupler Pending JPS6438721A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP19472587A JPS6438721A (en) 1987-08-04 1987-08-04 Branching ratio variable type optical fiber coupler

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP19472587A JPS6438721A (en) 1987-08-04 1987-08-04 Branching ratio variable type optical fiber coupler

Publications (1)

Publication Number Publication Date
JPS6438721A true JPS6438721A (en) 1989-02-09

Family

ID=16329203

Family Applications (1)

Application Number Title Priority Date Filing Date
JP19472587A Pending JPS6438721A (en) 1987-08-04 1987-08-04 Branching ratio variable type optical fiber coupler

Country Status (1)

Country Link
JP (1) JPS6438721A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6059891A (en) * 1997-07-23 2000-05-09 Tokyo Electron Limited Apparatus and method for washing substrate
US6115867A (en) * 1997-08-18 2000-09-12 Tokyo Electron Limited Apparatus for cleaning both sides of substrate

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6059891A (en) * 1997-07-23 2000-05-09 Tokyo Electron Limited Apparatus and method for washing substrate
US6115867A (en) * 1997-08-18 2000-09-12 Tokyo Electron Limited Apparatus for cleaning both sides of substrate
US6276378B1 (en) 1997-08-18 2001-08-21 Tokyo Electron Limited Apparatus for cleaning both sides of substrate

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