JPS5429656A - Optical fiber directivity coupler - Google Patents

Optical fiber directivity coupler

Info

Publication number
JPS5429656A
JPS5429656A JP9503777A JP9503777A JPS5429656A JP S5429656 A JPS5429656 A JP S5429656A JP 9503777 A JP9503777 A JP 9503777A JP 9503777 A JP9503777 A JP 9503777A JP S5429656 A JPS5429656 A JP S5429656A
Authority
JP
Japan
Prior art keywords
optical fiber
directivity coupler
fiber directivity
coupler
clads
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
JP9503777A
Other languages
Japanese (ja)
Inventor
Yasuo Minae
Minoru Maeda
Mitsuo Tanaka
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 JP9503777A priority Critical patent/JPS5429656A/en
Publication of JPS5429656A publication Critical patent/JPS5429656A/en
Pending legal-status Critical Current

Links

Abstract

PURPOSE: To reduce the insertion loss while controlling the degree of coupling by removing the clad between optical fibers and disposing clads of different refractive indices.
COPYRIGHT: (C)1979,JPO&Japio
JP9503777A 1977-08-10 1977-08-10 Optical fiber directivity coupler Pending JPS5429656A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP9503777A JPS5429656A (en) 1977-08-10 1977-08-10 Optical fiber directivity coupler

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP9503777A JPS5429656A (en) 1977-08-10 1977-08-10 Optical fiber directivity coupler

Publications (1)

Publication Number Publication Date
JPS5429656A true JPS5429656A (en) 1979-03-05

Family

ID=14126873

Family Applications (1)

Application Number Title Priority Date Filing Date
JP9503777A Pending JPS5429656A (en) 1977-08-10 1977-08-10 Optical fiber directivity coupler

Country Status (1)

Country Link
JP (1) JPS5429656A (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS60154215A (en) * 1984-01-25 1985-08-13 Nippon Telegr & Teleph Corp <Ntt> Fiber type directional coupler
JPS6190105A (en) * 1984-10-09 1986-05-08 Sumitomo Electric Ind Ltd Optical branching device
JPS63316008A (en) * 1987-06-18 1988-12-23 Fujitsu Ltd Production of optical coupler
JPH01244408A (en) * 1977-09-30 1989-09-28 Siemens Ag Mixer for optical fiber

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH01244408A (en) * 1977-09-30 1989-09-28 Siemens Ag Mixer for optical fiber
JPS60154215A (en) * 1984-01-25 1985-08-13 Nippon Telegr & Teleph Corp <Ntt> Fiber type directional coupler
JPS6190105A (en) * 1984-10-09 1986-05-08 Sumitomo Electric Ind Ltd Optical branching device
JPS63316008A (en) * 1987-06-18 1988-12-23 Fujitsu Ltd Production of optical coupler
JPH0532726B2 (en) * 1987-06-18 1993-05-17 Fujitsu Ltd

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