JPS57108816A - Optical coupling structure - Google Patents

Optical coupling structure

Info

Publication number
JPS57108816A
JPS57108816A JP18472080A JP18472080A JPS57108816A JP S57108816 A JPS57108816 A JP S57108816A JP 18472080 A JP18472080 A JP 18472080A JP 18472080 A JP18472080 A JP 18472080A JP S57108816 A JPS57108816 A JP S57108816A
Authority
JP
Japan
Prior art keywords
optical
fiber
refractive index
edge surface
optical coupling
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
JP18472080A
Other languages
Japanese (ja)
Inventor
Tadao Ogawa
Takemi Endo
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 JP18472080A priority Critical patent/JPS57108816A/en
Publication of JPS57108816A publication Critical patent/JPS57108816A/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
    • G02B6/421—Packages, e.g. shape, construction, internal or external details the coupling comprising intermediate optical elements, e.g. lenses, holograms the intermediate optical component consisting of a short length of fibre, e.g. fibre stub
    • 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
    • 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
    • G02B6/4206—Optical features

Landscapes

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

Abstract

PURPOSE:To realize an optical coupling structure which is capable of an optical coupling at a low loss even if the optical axis has some shift, by providing a mode diffusing rod having an uneven distribution of refractive index between a semiconductor laser element and the edge surface of an optical fiber. CONSTITUTION:A semiconductor laser element 2 is put on a base 1 made of a heat sink, etc., and an optical fiber 3 inserted to an optical connector 4 is set opposite to the output edge surface of the laser beam. A mode diffuser 21 has a refractive index of a core glass layer 31 larger than that of a cladding glass layer 32 coating over the layer 31 with an uneven distribution of refractive index as shown in the 3rd figure. Such diffuser 21 is put between the element 2 and the edge surface of the fiber 3. As a result, the light of a simple mode pattern given from the element 2 is diffused into many modes. Accordingly an optical connection is possible with high optical insertion factor even although a slight shift of the optical axis exists between the element 2 and the fiber 3.
JP18472080A 1980-12-25 1980-12-25 Optical coupling structure Pending JPS57108816A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP18472080A JPS57108816A (en) 1980-12-25 1980-12-25 Optical coupling structure

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP18472080A JPS57108816A (en) 1980-12-25 1980-12-25 Optical coupling structure

Publications (1)

Publication Number Publication Date
JPS57108816A true JPS57108816A (en) 1982-07-07

Family

ID=16158178

Family Applications (1)

Application Number Title Priority Date Filing Date
JP18472080A Pending JPS57108816A (en) 1980-12-25 1980-12-25 Optical coupling structure

Country Status (1)

Country Link
JP (1) JPS57108816A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS61189687A (en) * 1985-02-18 1986-08-23 Kyocera Corp Semiconductor device with optical fiber connector
WO1996006374A1 (en) * 1994-08-18 1996-02-29 Aesculap Ag Device for generating a laser beam with a homogenised cross-section and use of said beam
WO2004003616A3 (en) * 2002-06-27 2004-04-15 Commissariat Energie Atomique Device for automatic centering of a laser beam and method for making same

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS61189687A (en) * 1985-02-18 1986-08-23 Kyocera Corp Semiconductor device with optical fiber connector
WO1996006374A1 (en) * 1994-08-18 1996-02-29 Aesculap Ag Device for generating a laser beam with a homogenised cross-section and use of said beam
WO2004003616A3 (en) * 2002-06-27 2004-04-15 Commissariat Energie Atomique Device for automatic centering of a laser beam and method for making same

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