JPS5730806A - Optical branching coupler - Google Patents

Optical branching coupler

Info

Publication number
JPS5730806A
JPS5730806A JP10590380A JP10590380A JPS5730806A JP S5730806 A JPS5730806 A JP S5730806A JP 10590380 A JP10590380 A JP 10590380A JP 10590380 A JP10590380 A JP 10590380A JP S5730806 A JPS5730806 A JP S5730806A
Authority
JP
Japan
Prior art keywords
layers
optical fibers
end parts
refractive indices
waveguide layers
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
JP10590380A
Other languages
Japanese (ja)
Inventor
Hideki Noda
Kazuyuki Asanuma
Seiji Terai
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 JP10590380A priority Critical patent/JPS5730806A/en
Publication of JPS5730806A publication Critical patent/JPS5730806A/en
Pending 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 distribute light signals uniformly at a low loss by alternately laminating plural layers of optical waveguide layers and thin films of mutually different refractive indices at prescribed patterns on the surface of a dielectric substrate and connecting the optical fibers on input side and output side to the respective waveguide layers. CONSTITUTION:A groove 12 of prescribed width is formed on a substrate dielectric 11 of quartz or the like, and optical waveguide layers 13a-13c of refractive indices higher than that of the substrate 11 consisting of SiO2 or the like added with GeO2 or the like and thin films 14a, 14b of dielectrics of refractive indices lower than those of the waveguide layers 13 consisting of SiO2 or the like added with B or the like are formed alternately into plural layers. Input side optical fibers 15'17 and output side optical fibers 18-20 cut and formed with leading end parts into a taper shape are fixed to the input tapered end parts 131-133 and output tapered end parts 131'-133' of the layers 13 by means of adhesive agents or the like. For example, the light propagating in the input side optical fiber 15 is distributed to the output side optical fibers 18-20 as shown by chain lines. Thereby, the light signals are distributed uniformly at a low loss.
JP10590380A 1980-07-31 1980-07-31 Optical branching coupler Pending JPS5730806A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP10590380A JPS5730806A (en) 1980-07-31 1980-07-31 Optical branching coupler

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP10590380A JPS5730806A (en) 1980-07-31 1980-07-31 Optical branching coupler

Publications (1)

Publication Number Publication Date
JPS5730806A true JPS5730806A (en) 1982-02-19

Family

ID=14419833

Family Applications (1)

Application Number Title Priority Date Filing Date
JP10590380A Pending JPS5730806A (en) 1980-07-31 1980-07-31 Optical branching coupler

Country Status (1)

Country Link
JP (1) JPS5730806A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1376179A2 (en) * 2002-06-27 2004-01-02 Toyoda Koki Kabushiki Kaisha Laminated optical waveguide array, optical beam collecting device and laser emission device

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1376179A2 (en) * 2002-06-27 2004-01-02 Toyoda Koki Kabushiki Kaisha Laminated optical waveguide array, optical beam collecting device and laser emission device
EP1376179A3 (en) * 2002-06-27 2004-04-14 Toyoda Koki Kabushiki Kaisha Laminated optical waveguide array, optical beam collecting device and laser emission device
US6819861B2 (en) 2002-06-27 2004-11-16 Toyoda Koki Kabushiki Kaisha Laminated optical waveguide array, beam collecting device and laser emission device

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