JPS57204020A - Optical branching and coupling device - Google Patents

Optical branching and coupling device

Info

Publication number
JPS57204020A
JPS57204020A JP8859281A JP8859281A JPS57204020A JP S57204020 A JPS57204020 A JP S57204020A JP 8859281 A JP8859281 A JP 8859281A JP 8859281 A JP8859281 A JP 8859281A JP S57204020 A JPS57204020 A JP S57204020A
Authority
JP
Japan
Prior art keywords
fiber
optical
elliptic
fibers
coupling device
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
JP8859281A
Other languages
Japanese (ja)
Inventor
Shigeo Aoki
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.)
NEC Corp
Original Assignee
NEC Corp
Nippon Electric Co 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 NEC Corp, Nippon Electric Co Ltd filed Critical NEC Corp
Priority to JP8859281A priority Critical patent/JPS57204020A/en
Publication of JPS57204020A publication Critical patent/JPS57204020A/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
    • 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
    • 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
    • G02B6/2848—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 having refractive means, e.g. imaging elements between light guides as splitting, branching and/or combining devices, e.g. lenses, holograms

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Optical Couplings Of Light Guides (AREA)

Abstract

PURPOSE:To obtain an optical branching and coupling device which is superior in variance of characteristics, yield, and manufacture cost by connecting plural optical fibers, which are less in the sectional area of and the number of opening of an elliptic core fiber, to one end of the elliptic core fiber, and also connecting >= 1 similar optical fiber to the other end. CONSTITUTION:To both ends of an elliptic optical fiber 3, two optical fibers 1 and 2 which have sectional area less than the sectional area B of the ellipse and are less than the number of openings of the elliptic core fiber 3, and one similar optical fiber 4 are connected respectively by sealing. Beams of light entering the elliptic fiber 3 from the optical fibers 1 and 2, or 4 propagate to the elliptic fiber 3 without loss. The beam from the fiber 4 is branched to the optical fiber 1 and 2, and the beams from the fibers 1 and 2 are emitted to the fiber 4. Only the fibers are used and connecting technique for them is only required, so an optical branching and coupling device superior in variance of characteristics, yield and manufacture cost is obtained.
JP8859281A 1981-06-09 1981-06-09 Optical branching and coupling device Pending JPS57204020A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP8859281A JPS57204020A (en) 1981-06-09 1981-06-09 Optical branching and coupling device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP8859281A JPS57204020A (en) 1981-06-09 1981-06-09 Optical branching and coupling device

Publications (1)

Publication Number Publication Date
JPS57204020A true JPS57204020A (en) 1982-12-14

Family

ID=13947099

Family Applications (1)

Application Number Title Priority Date Filing Date
JP8859281A Pending JPS57204020A (en) 1981-06-09 1981-06-09 Optical branching and coupling device

Country Status (1)

Country Link
JP (1) JPS57204020A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS59127013A (en) * 1983-01-11 1984-07-21 Mitsubishi Electric Corp Star coupler

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS59127013A (en) * 1983-01-11 1984-07-21 Mitsubishi Electric Corp Star coupler

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