JPS57198424A - Optical coupling part - Google Patents

Optical coupling part

Info

Publication number
JPS57198424A
JPS57198424A JP8271481A JP8271481A JPS57198424A JP S57198424 A JPS57198424 A JP S57198424A JP 8271481 A JP8271481 A JP 8271481A JP 8271481 A JP8271481 A JP 8271481A JP S57198424 A JPS57198424 A JP S57198424A
Authority
JP
Japan
Prior art keywords
core
layers
taper
optical coupling
clad
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
JP8271481A
Other languages
Japanese (ja)
Inventor
Nobuo Kobata
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.)
SWCC Corp
Original Assignee
Showa Electric Wire and Cable Co
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 Showa Electric Wire and Cable Co filed Critical Showa Electric Wire and Cable Co
Priority to JP8271481A priority Critical patent/JPS57198424A/en
Publication of JPS57198424A publication Critical patent/JPS57198424A/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
    • G02B6/2821—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 lateral coupling between contiguous fibres to split or combine optical signals
    • G02B6/2835—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 lateral coupling between contiguous fibres to split or combine optical signals formed or shaped by thermal treatment, e.g. 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
    • G02B6/2821—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 lateral coupling between contiguous fibres to split or combine optical signals
    • G02B6/2835—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 lateral coupling between contiguous fibres to split or combine optical signals formed or shaped by thermal treatment, e.g. couplers
    • G02B2006/2839—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 lateral coupling between contiguous fibres to split or combine optical signals formed or shaped by thermal treatment, e.g. couplers fabricated from double or twin core fibres

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)

Abstract

PURPOSE:To reduce the penetration loss of an optical coupling part by constricting a part of a taper structure whose diameter is gradually contracted in proportion to access to the end surface of the optical coupling part to make it easy to return light power once penetrated into a clad part again to a core. CONSTITUTION:A constricted part 3 is formed on a part of a taper of an photocoupler which forms a taperlike shape by surrounding the intermediate part between two core layers 2 and the periphery of the core layers with clad layers 1. When light falls upon an end surface 4 of the taper part at a mode A and advances in a thick part, optical power penetrated from the clad layer 1 on the intermediate part between the two core layers into the core layers 2 is larger than the light leaked and lost from the core layer 2 in the constricted part and the light transmitted into the core part 2 reduces its penetration loss as shown by hatched part in the optical distribution B.
JP8271481A 1981-05-30 1981-05-30 Optical coupling part Pending JPS57198424A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP8271481A JPS57198424A (en) 1981-05-30 1981-05-30 Optical coupling part

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP8271481A JPS57198424A (en) 1981-05-30 1981-05-30 Optical coupling part

Publications (1)

Publication Number Publication Date
JPS57198424A true JPS57198424A (en) 1982-12-06

Family

ID=13782072

Family Applications (1)

Application Number Title Priority Date Filing Date
JP8271481A Pending JPS57198424A (en) 1981-05-30 1981-05-30 Optical coupling part

Country Status (1)

Country Link
JP (1) JPS57198424A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4721353A (en) * 1985-10-30 1988-01-26 U.S. Philips Corporation Optical transmission system comprising a monomode optical transmission fibre having a tapered end portion

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4721353A (en) * 1985-10-30 1988-01-26 U.S. Philips Corporation Optical transmission system comprising a monomode optical transmission fibre having a tapered end portion

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