JPS5754913A - Photocoupler - Google Patents

Photocoupler

Info

Publication number
JPS5754913A
JPS5754913A JP13014580A JP13014580A JPS5754913A JP S5754913 A JPS5754913 A JP S5754913A JP 13014580 A JP13014580 A JP 13014580A JP 13014580 A JP13014580 A JP 13014580A JP S5754913 A JPS5754913 A JP S5754913A
Authority
JP
Japan
Prior art keywords
optical wave
layer
wave directing
optical
path
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.)
Granted
Application number
JP13014580A
Other languages
Japanese (ja)
Other versions
JPS6257966B2 (en
Inventor
Hideki Noda
Seiji Terai
Kazuyuki Asanuma
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 JP13014580A priority Critical patent/JPS5754913A/en
Publication of JPS5754913A publication Critical patent/JPS5754913A/en
Publication of JPS6257966B2 publication Critical patent/JPS6257966B2/ja
Granted 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
    • G02B6/2808—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 a mixing element which evenly distributes an input signal over a number of outputs

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Optical Integrated Circuits (AREA)

Abstract

PURPOSE:To reduce a loss of an optical signal and to distribute it efficiently, by providing a curved optical wave directing path having an optical wave directing layer whose thickness is almost same as the diameter of a core of an input/output optical fiber. CONSTITUTION:On the inside surface of a dielectric substrate 12 which consists of quartz, etc. and has been curved in a circular arc shape, an optical wave directing path 13 whose refractive index is higher than that of the substrate 12, and a dielectric layer 14 whose refractive index is lowe than that of the optical wave directing path 13 are formed in order. When manufacturing a curved optical wave direting path 11, for instance, an optical wave directing layer 13 is formed on the inside wall of a quartz glass tube 12 having a large diameter, by means of an internal chemical vapor phase accumulation, and the dielectric layer 14 whose refractive index is same as that of the quartz glass tube 12 is formed on said layer 13, which is cut into a semi-cylindrical shape. After the cut output fibers are made to adhere and are fixed onto the exposed surface of the optical wave directing layer 13. In this way, a loss of an optical signal is reduced and the signal is distributed efficiently.
JP13014580A 1980-09-19 1980-09-19 Photocoupler Granted JPS5754913A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP13014580A JPS5754913A (en) 1980-09-19 1980-09-19 Photocoupler

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP13014580A JPS5754913A (en) 1980-09-19 1980-09-19 Photocoupler

Publications (2)

Publication Number Publication Date
JPS5754913A true JPS5754913A (en) 1982-04-01
JPS6257966B2 JPS6257966B2 (en) 1987-12-03

Family

ID=15027041

Family Applications (1)

Application Number Title Priority Date Filing Date
JP13014580A Granted JPS5754913A (en) 1980-09-19 1980-09-19 Photocoupler

Country Status (1)

Country Link
JP (1) JPS5754913A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0479100A2 (en) * 1990-10-01 1992-04-08 Delphi Automotive Systems Deutschland GmbH Optical star coupler
JPH06342112A (en) * 1990-02-06 1994-12-13 General Motors Corp <Gm> Optical fiber assembly

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS542141A (en) * 1977-06-08 1979-01-09 Oki Electric Ind Co Ltd Star sranching element

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS542141A (en) * 1977-06-08 1979-01-09 Oki Electric Ind Co Ltd Star sranching element

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH06342112A (en) * 1990-02-06 1994-12-13 General Motors Corp <Gm> Optical fiber assembly
EP0479100A2 (en) * 1990-10-01 1992-04-08 Delphi Automotive Systems Deutschland GmbH Optical star coupler

Also Published As

Publication number Publication date
JPS6257966B2 (en) 1987-12-03

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