JPS5756814A - Photocoupler - Google Patents

Photocoupler

Info

Publication number
JPS5756814A
JPS5756814A JP13216680A JP13216680A JPS5756814A JP S5756814 A JPS5756814 A JP S5756814A JP 13216680 A JP13216680 A JP 13216680A JP 13216680 A JP13216680 A JP 13216680A JP S5756814 A JPS5756814 A JP S5756814A
Authority
JP
Japan
Prior art keywords
input
conductor part
optical fiber
refractive index
output optical
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
JP13216680A
Other languages
Japanese (ja)
Other versions
JPS6257002B2 (en
Inventor
Seiji Terai
Hideki Noda
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 JP13216680A priority Critical patent/JPS5756814A/en
Publication of JPS5756814A publication Critical patent/JPS5756814A/en
Publication of JPS6257002B2 publication Critical patent/JPS6257002B2/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 Couplings Of Light Guides (AREA)

Abstract

PURPOSE:To reduce the insertion loss, to equalize the photocoupling, and to execute it with high efficiency, by using a repeating rod having a cylindrical optical conductor part whose thickness is similar to the core diameter of an input/output optical fiber. CONSTITUTION:A repeating rod 11 has a structure which has formed a cylindrical high refractive index optical conductor part 13 whose thickness is similar to the core diameter of an input/output optical fiber, between an outside circumferential side layer 12 of a low refractive index amd a center side layer 14, by a CVD method, etc. and the number of apertures is made larger than that of the input/output optical fiber. To one end 15 of said rod 11 and to the other end 16, input optical fibers 17, 18 and an output optical fiber group 19 are set, respectively, so that each fiber core contacts with said optical conductor part 13. and are tightly fixed by a transparent matching adhesive agent, etc. having the same refractive index as that of said optical conductor part 13.
JP13216680A 1980-09-22 1980-09-22 Photocoupler Granted JPS5756814A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP13216680A JPS5756814A (en) 1980-09-22 1980-09-22 Photocoupler

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP13216680A JPS5756814A (en) 1980-09-22 1980-09-22 Photocoupler

Publications (2)

Publication Number Publication Date
JPS5756814A true JPS5756814A (en) 1982-04-05
JPS6257002B2 JPS6257002B2 (en) 1987-11-28

Family

ID=15074903

Family Applications (1)

Application Number Title Priority Date Filing Date
JP13216680A Granted JPS5756814A (en) 1980-09-22 1980-09-22 Photocoupler

Country Status (1)

Country Link
JP (1) JPS5756814A (en)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS596854U (en) * 1982-07-07 1984-01-17 三菱レイヨン株式会社 optical coupler
FR2580084A1 (en) * 1985-04-05 1986-10-10 Thomson Csf
JPS63311211A (en) * 1987-06-12 1988-12-20 Natl Aerospace Lab Cylindrical optical star coupler
EP0301702A2 (en) * 1987-07-30 1989-02-01 Stc Plc Single mode star coupler
EP1441247A1 (en) * 2003-01-22 2004-07-28 Fuji Xerox Co., Ltd. Light signal transmitting device and signal processing device
EP1010024B1 (en) * 1996-03-22 2013-01-02 TELEFONAKTIEBOLAGET LM ERICSSON (publ) An optical element

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0569502U (en) * 1992-02-21 1993-09-21 東洋化学株式会社 Hori Kotatsu

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5399953A (en) * 1977-02-10 1978-08-31 Toshiba Corp Optical distributor

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5399953A (en) * 1977-02-10 1978-08-31 Toshiba Corp Optical distributor

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS596854U (en) * 1982-07-07 1984-01-17 三菱レイヨン株式会社 optical coupler
FR2580084A1 (en) * 1985-04-05 1986-10-10 Thomson Csf
JPS63311211A (en) * 1987-06-12 1988-12-20 Natl Aerospace Lab Cylindrical optical star coupler
EP0301702A2 (en) * 1987-07-30 1989-02-01 Stc Plc Single mode star coupler
EP0301702A3 (en) * 1987-07-30 1990-07-04 Stc Plc Single mode star coupler
EP1010024B1 (en) * 1996-03-22 2013-01-02 TELEFONAKTIEBOLAGET LM ERICSSON (publ) An optical element
EP1441247A1 (en) * 2003-01-22 2004-07-28 Fuji Xerox Co., Ltd. Light signal transmitting device and signal processing device
US7039274B2 (en) 2003-01-22 2006-05-02 Fuji Xerox Co., Ltd. Light signal transmitting device and signal processing device

Also Published As

Publication number Publication date
JPS6257002B2 (en) 1987-11-28

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