JPS5440645A - Optical branching device - Google Patents

Optical branching device

Info

Publication number
JPS5440645A
JPS5440645A JP10634077A JP10634077A JPS5440645A JP S5440645 A JPS5440645 A JP S5440645A JP 10634077 A JP10634077 A JP 10634077A JP 10634077 A JP10634077 A JP 10634077A JP S5440645 A JPS5440645 A JP S5440645A
Authority
JP
Japan
Prior art keywords
optical branching
branching device
transmissivity
optical fiber
accordance
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
JP10634077A
Other languages
Japanese (ja)
Inventor
Hiroyuki Fujita
Kiyohide Miyake
Koji Yamaguchi
Yasuji Suzaki
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 JP10634077A priority Critical patent/JPS5440645A/en
Publication of JPS5440645A publication Critical patent/JPS5440645A/en
Pending legal-status Critical Current

Links

Landscapes

  • Optical Communication System (AREA)
  • Mechanical Light Control Or Optical Switches (AREA)

Abstract

PURPOSE:To make it possible to suitably control the optically branching ratio by providing at the branched portion of an optical fiber a beam splitter which is composed of such a dielectric multi-layer film has has its transmissivity and reflectivity varied in accordance with the level of the voltage applied.
JP10634077A 1977-09-06 1977-09-06 Optical branching device Pending JPS5440645A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP10634077A JPS5440645A (en) 1977-09-06 1977-09-06 Optical branching device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP10634077A JPS5440645A (en) 1977-09-06 1977-09-06 Optical branching device

Publications (1)

Publication Number Publication Date
JPS5440645A true JPS5440645A (en) 1979-03-30

Family

ID=14431105

Family Applications (1)

Application Number Title Priority Date Filing Date
JP10634077A Pending JPS5440645A (en) 1977-09-06 1977-09-06 Optical branching device

Country Status (1)

Country Link
JP (1) JPS5440645A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS58129414A (en) * 1982-01-27 1983-08-02 Sumitomo Electric Ind Ltd Optical device
JPS602794A (en) * 1983-06-15 1985-01-09 平野金属株式会社 Vacuum dehydrator

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS58129414A (en) * 1982-01-27 1983-08-02 Sumitomo Electric Ind Ltd Optical device
JPS602794A (en) * 1983-06-15 1985-01-09 平野金属株式会社 Vacuum dehydrator

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