JPS5515184A - Photo coupler - Google Patents

Photo coupler

Info

Publication number
JPS5515184A
JPS5515184A JP8875778A JP8875778A JPS5515184A JP S5515184 A JPS5515184 A JP S5515184A JP 8875778 A JP8875778 A JP 8875778A JP 8875778 A JP8875778 A JP 8875778A JP S5515184 A JPS5515184 A JP S5515184A
Authority
JP
Japan
Prior art keywords
face
optical fiber
incident end
glass
epoxy
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
JP8875778A
Other languages
Japanese (ja)
Other versions
JPS61608B2 (en
Inventor
Hiroo Yonezu
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 JP8875778A priority Critical patent/JPS5515184A/en
Priority to US06/023,917 priority patent/US4281891A/en
Publication of JPS5515184A publication Critical patent/JPS5515184A/en
Publication of JPS61608B2 publication Critical patent/JPS61608B2/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
    • G02B6/42—Coupling light guides with opto-electronic elements
    • G02B6/4201—Packages, e.g. shape, construction, internal or external details
    • G02B6/4204—Packages, e.g. shape, construction, internal or external details the coupling comprising intermediate optical elements, e.g. lenses, holograms
    • G02B6/4207—Packages, e.g. shape, construction, internal or external details the coupling comprising intermediate optical elements, e.g. lenses, holograms with optical elements reducing the sensitivity to optical feedback
    • 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
    • G02B6/42—Coupling light guides with opto-electronic elements
    • G02B6/4201—Packages, e.g. shape, construction, internal or external details
    • G02B6/4204—Packages, e.g. shape, construction, internal or external details the coupling comprising intermediate optical elements, e.g. lenses, holograms
    • G02B6/4212—Packages, e.g. shape, construction, internal or external details the coupling comprising intermediate optical elements, e.g. lenses, holograms the intermediate optical element being a coupling medium interposed therebetween, e.g. epoxy resin, refractive index matching material, index grease, matching liquid or gel

Landscapes

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

Abstract

PURPOSE:To virtually eliminate the reflection at the incident end face of an optical fiber by disposing a transparent glass plate by means of a transparent adhesive agent to the incident end face of the optical fiber in coupling of a semiconductor laser and optical fiber. CONSTITUTION:A plane glass 3 is placed in front of the incident end face 2 of an optical fiber 1 and between these is bonded by means of epoxy 4. The refractive index of glass or guartz is 1.4 to 1.5 and that of epoxy about 1.5. Hence, if the incident end face 2 of the optical fiber made of glass or guartz and glass or guartz plate 3 are bonded by the epoxy 4, the spacing between both is not air layer but epoxy and therefore the reflectance of light at the incident end face 2 of the optical fiber becomes 0 to 0.12%. Further, if necessary, non-reflection coating 7' is applied to the incident end face 7 of the glass plate 3.
JP8875778A 1978-03-27 1978-07-19 Photo coupler Granted JPS5515184A (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
JP8875778A JPS5515184A (en) 1978-07-19 1978-07-19 Photo coupler
US06/023,917 US4281891A (en) 1978-03-27 1979-03-26 Device for excellently coupling a laser beam to a transmission medium through a lens

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP8875778A JPS5515184A (en) 1978-07-19 1978-07-19 Photo coupler

Related Child Applications (1)

Application Number Title Priority Date Filing Date
JP11847885A Division JPS6193419A (en) 1985-05-31 1985-05-31 Optical coupling device

Publications (2)

Publication Number Publication Date
JPS5515184A true JPS5515184A (en) 1980-02-02
JPS61608B2 JPS61608B2 (en) 1986-01-09

Family

ID=13951746

Family Applications (1)

Application Number Title Priority Date Filing Date
JP8875778A Granted JPS5515184A (en) 1978-03-27 1978-07-19 Photo coupler

Country Status (1)

Country Link
JP (1) JPS5515184A (en)

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS55118010A (en) * 1979-03-05 1980-09-10 Nec Corp Semiconductor laser coupler
JPS56132931A (en) * 1980-03-24 1981-10-17 Olympus Optical Co Endoscope
EP0038563A2 (en) * 1980-04-23 1981-10-28 CSELT Centro Studi e Laboratori Telecomunicazioni S.p.A. Optical system with high coupling efficiency, in particular for attenuation measurement apparatuses employing the back-scattering technique
JPS6191609A (en) * 1984-10-11 1986-05-09 Nec Corp Cable holding structure of optical fiber connector
JPS6193419A (en) * 1985-05-31 1986-05-12 Nec Corp Optical coupling device
US4779947A (en) * 1983-12-26 1988-10-25 Kabushiki Kaisha Toshiba Optical-fiber coupling device
US4790618A (en) * 1985-11-01 1988-12-13 Nec Corporation Semiconductor laser module

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS55118010A (en) * 1979-03-05 1980-09-10 Nec Corp Semiconductor laser coupler
JPS6315564B2 (en) * 1979-03-05 1988-04-05 Nippon Electric Co
JPS56132931A (en) * 1980-03-24 1981-10-17 Olympus Optical Co Endoscope
EP0038563A2 (en) * 1980-04-23 1981-10-28 CSELT Centro Studi e Laboratori Telecomunicazioni S.p.A. Optical system with high coupling efficiency, in particular for attenuation measurement apparatuses employing the back-scattering technique
EP0038563A3 (en) * 1980-04-23 1982-04-14 CSELT Centro Studi e Laboratori Telecomunicazioni S.p.A. Optical system with high coupling efficiency, in particular for attenuation measurement apparatuses employing the back-scattering technique
US4779947A (en) * 1983-12-26 1988-10-25 Kabushiki Kaisha Toshiba Optical-fiber coupling device
JPS6191609A (en) * 1984-10-11 1986-05-09 Nec Corp Cable holding structure of optical fiber connector
JPS6193419A (en) * 1985-05-31 1986-05-12 Nec Corp Optical coupling device
US4790618A (en) * 1985-11-01 1988-12-13 Nec Corporation Semiconductor laser module

Also Published As

Publication number Publication date
JPS61608B2 (en) 1986-01-09

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