JPS552262A - Photo coupler - Google Patents

Photo coupler

Info

Publication number
JPS552262A
JPS552262A JP7503578A JP7503578A JPS552262A JP S552262 A JPS552262 A JP S552262A JP 7503578 A JP7503578 A JP 7503578A JP 7503578 A JP7503578 A JP 7503578A JP S552262 A JPS552262 A JP S552262A
Authority
JP
Japan
Prior art keywords
waveguide
coupling
layer
clad layer
laminated
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
JP7503578A
Other languages
Japanese (ja)
Inventor
Morio Kobayashi
Tadashi Miyashita
Hiroshi Terui
Yasuharu Suematsu
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.)
Nippon Telegraph and Telephone Corp
Original Assignee
Nippon Telegraph and Telephone Corp
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 Nippon Telegraph and Telephone Corp filed Critical Nippon Telegraph and Telephone Corp
Priority to JP7503578A priority Critical patent/JPS552262A/en
Publication of JPS552262A publication Critical patent/JPS552262A/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
    • G02B6/30—Optical coupling means for use between fibre and thin-film device
    • 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

Abstract

PURPOSE:To enable optical fibers and optical guides to be connected with good coupling efficiency by so constituting the photo coupler that the second waveguide is laminated on the first waveguide so as to have a clad layer in common. CONSTITUTION:The second waveguide which has a clad layer 3 in common and has a coupling waveguide layer 4 and a coupling clad layer 5 is laminated on the first waveguide consisting of a substrate 1, waveguide layer 2 and clad layer 3. The refractive index of the coupling waveguide layer 4 is set at a value roughly equal to the standardized propagation constant of the first waveguide and the refractive index for the coupling clad layer 5 is so set that te film thickness of the coupling waveguide layer 4 becomes a desired thickness. In addition, the length L of the coupling waveguide 4 and clad layer 5 is so set as to satisfy formula I. Such constitution enables the light power from the optical fiber 6 to be led into the second waveguide and to be further migrated with good efficiency into the first waveguide.
JP7503578A 1978-06-20 1978-06-20 Photo coupler Pending JPS552262A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP7503578A JPS552262A (en) 1978-06-20 1978-06-20 Photo coupler

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP7503578A JPS552262A (en) 1978-06-20 1978-06-20 Photo coupler

Publications (1)

Publication Number Publication Date
JPS552262A true JPS552262A (en) 1980-01-09

Family

ID=13564529

Family Applications (1)

Application Number Title Priority Date Filing Date
JP7503578A Pending JPS552262A (en) 1978-06-20 1978-06-20 Photo coupler

Country Status (1)

Country Link
JP (1) JPS552262A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20200257054A1 (en) * 2019-02-11 2020-08-13 Poet Technologies, Inc. Dual Core Waveguide

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5226240A (en) * 1975-08-22 1977-02-26 Nippon Telegr & Teleph Corp <Ntt> Device for a light wave-guiding path

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5226240A (en) * 1975-08-22 1977-02-26 Nippon Telegr & Teleph Corp <Ntt> Device for a light wave-guiding path

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20200257054A1 (en) * 2019-02-11 2020-08-13 Poet Technologies, Inc. Dual Core Waveguide
US20200257053A1 (en) * 2019-02-11 2020-08-13 Poet Technologies, Inc. Dual Core Waveguide
US10976496B2 (en) * 2019-02-11 2021-04-13 Poet Technologies, Inc. Dual core waveguide
US10976497B2 (en) * 2019-02-11 2021-04-13 Poet Technologies, Inc. Dual core waveguide

Similar Documents

Publication Publication Date Title
ATE116450T1 (en) FIBER OPTICAL CONNECTOR.
JPS5360651A (en) Semiconductor laser with optical fibers
ATE51713T1 (en) CONNECTION OF WAVEGUIDES.
ES532804A1 (en) Polarization-retaining single-mode optical waveguide.
ES8201322A1 (en) Single mode fibre and method of manufacture
JPS57114111A (en) Optical polarized branching filter
JPS552262A (en) Photo coupler
JPS5515184A (en) Photo coupler
JPS56167115A (en) Connection structure of multicore optical fiber
JPS54111363A (en) Directional photo coupler
JPS57100409A (en) Optical coupler
JPS54110858A (en) Optical guide type wavelength filter
JPS57157207A (en) Optical distribution coupler
JPS54116254A (en) Photo directional coupler
EP0295039A3 (en) Optical waveguide coupler
JPS5674204A (en) Light branching circuit
JPS5429656A (en) Optical fiber directivity coupler
JPS5685728A (en) Waveguide type mode converter
JPS5672404A (en) Optical fiber for infrared-ray transmission
JPS5772119A (en) Optical branching filter
JPS5670505A (en) Light branching filter circuit
JPS6468735A (en) Waveguide type shg element
JPS5381136A (en) Fiber for optical transmission
JPS5465554A (en) Combined wide band optical fiber
JPS54105559A (en) Integrated light coupling device