JPS55164803A - Coupling method of semiconductor laser and optical fiber - Google Patents

Coupling method of semiconductor laser and optical fiber

Info

Publication number
JPS55164803A
JPS55164803A JP7297779A JP7297779A JPS55164803A JP S55164803 A JPS55164803 A JP S55164803A JP 7297779 A JP7297779 A JP 7297779A JP 7297779 A JP7297779 A JP 7297779A JP S55164803 A JPS55164803 A JP S55164803A
Authority
JP
Japan
Prior art keywords
face
optical fiber
light source
light
respect
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
JP7297779A
Other languages
Japanese (ja)
Inventor
Tetsuo Horimatsu
Masaru Sasaki
Takashi Toge
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 JP7297779A priority Critical patent/JPS55164803A/en
Publication of JPS55164803A publication Critical patent/JPS55164803A/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
    • G02B6/42—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

Landscapes

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

Abstract

PURPOSE:To enable the inexpensive removal of the unstability of a light source owing to reflected light by inclining the end face of an optical fiber with respect to the optical axis of a lens. CONSTITUTION:Light emitted from a light source 1 enters an optical fiber 4 through lenses 2, 3 of spherical or aspherical faces. At this time, the end face 5 of the optical fiber 4 is inclined by theta1 with respect to the face perpendicular to the central axis 6. If the laser light source and the fiber are coupled in this way, a greater portion of the light enters the optical fiber 4, but about 4% reflects from the end face 5. This reflected light 8 returns to the place deviated from the light emitting face of the laser light source 1. Hence, the unstability of the light source owing to the reflected light may be eliminated. Here, theta1 is suitably 2 deg.-4 deg.. The similar effect is also obtainable even by using the optical fiber 4 with its end face 5 being made perpendicular to the central axis 6 and incliding said end face 5 with respect to the optical axis 7.
JP7297779A 1979-06-12 1979-06-12 Coupling method of semiconductor laser and optical fiber Pending JPS55164803A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP7297779A JPS55164803A (en) 1979-06-12 1979-06-12 Coupling method of semiconductor laser and optical fiber

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP7297779A JPS55164803A (en) 1979-06-12 1979-06-12 Coupling method of semiconductor laser and optical fiber

Publications (1)

Publication Number Publication Date
JPS55164803A true JPS55164803A (en) 1980-12-22

Family

ID=13504949

Family Applications (1)

Application Number Title Priority Date Filing Date
JP7297779A Pending JPS55164803A (en) 1979-06-12 1979-06-12 Coupling method of semiconductor laser and optical fiber

Country Status (1)

Country Link
JP (1) JPS55164803A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6015618A (en) * 1983-07-08 1985-01-26 Olympus Optical Co Ltd Endoscope
JPH0473706A (en) * 1990-07-16 1992-03-09 Hitachi Constr Mach Co Ltd Back-talk effect preventing type optical fiber
JPH08148755A (en) * 1994-11-25 1996-06-07 Nec Corp Plane emitting laser device and its manufacture

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5238939A (en) * 1975-09-23 1977-03-25 Nippon Telegr & Teleph Corp <Ntt> Optical coupler
JPS5569115A (en) * 1978-11-20 1980-05-24 Mitsubishi Electric Corp Optical coupling device

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5238939A (en) * 1975-09-23 1977-03-25 Nippon Telegr & Teleph Corp <Ntt> Optical coupler
JPS5569115A (en) * 1978-11-20 1980-05-24 Mitsubishi Electric Corp Optical coupling device

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6015618A (en) * 1983-07-08 1985-01-26 Olympus Optical Co Ltd Endoscope
JPH0473706A (en) * 1990-07-16 1992-03-09 Hitachi Constr Mach Co Ltd Back-talk effect preventing type optical fiber
JPH08148755A (en) * 1994-11-25 1996-06-07 Nec Corp Plane emitting laser device and its manufacture

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