JPS54110851A - Coupling system of optical transmission line - Google Patents

Coupling system of optical transmission line

Info

Publication number
JPS54110851A
JPS54110851A JP1781178A JP1781178A JPS54110851A JP S54110851 A JPS54110851 A JP S54110851A JP 1781178 A JP1781178 A JP 1781178A JP 1781178 A JP1781178 A JP 1781178A JP S54110851 A JPS54110851 A JP S54110851A
Authority
JP
Japan
Prior art keywords
optical fiber
focus lens
short focus
core
radius
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
JP1781178A
Other languages
Japanese (ja)
Other versions
JPS5612841B2 (en
Inventor
Hideyo Higuchi
Wataru Suzaki
Kenji Ikeda
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.)
Mitsubishi Electric Corp
Original Assignee
Mitsubishi Electric 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 Mitsubishi Electric Corp filed Critical Mitsubishi Electric Corp
Priority to JP1781178A priority Critical patent/JPS54110851A/en
Publication of JPS54110851A publication Critical patent/JPS54110851A/en
Publication of JPS5612841B2 publication Critical patent/JPS5612841B2/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
    • G02B6/421—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
    • G02B6/4206—Optical features

Landscapes

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

Abstract

PURPOSE:To improve the coupling efficiency to optical transmission line by using an optical fiber which is smaller in radius of core, is larger in opening and is provided with a short focus lens. CONSTITUTION:An optical fiber 7 which is smaller in the radius R of its core 6 than the radius R of a core 4, is larger in numerical aperture than an optical fiber 3 and is provided with a short focus lens 8 such as of spherical lens or the like is disposed between a semiconductor laser 1 and the optical fiber 3. Then, the output light directed from the optical fiber 7 to the short focus lens 8 becomes the one which can be regarded as the light from a minute light source and the output light of the short focus lens 8 for the optical fiber 3 equivalently has the radis R of about the same as that of the core 4, thus approximately forming parallel rays. Hence, the efficiency of the optical coupling between the short focus lens 8 and the optical fiber 3 increases and since the peripheral part of the output light of the short focus lens 8 is of gaussian type and of weak light intensity, the coupling efficiency from the semiconductor laser 1 up to the optical fiber 3 increases.
JP1781178A 1978-02-17 1978-02-17 Coupling system of optical transmission line Granted JPS54110851A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP1781178A JPS54110851A (en) 1978-02-17 1978-02-17 Coupling system of optical transmission line

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP1781178A JPS54110851A (en) 1978-02-17 1978-02-17 Coupling system of optical transmission line

Publications (2)

Publication Number Publication Date
JPS54110851A true JPS54110851A (en) 1979-08-30
JPS5612841B2 JPS5612841B2 (en) 1981-03-25

Family

ID=11954105

Family Applications (1)

Application Number Title Priority Date Filing Date
JP1781178A Granted JPS54110851A (en) 1978-02-17 1978-02-17 Coupling system of optical transmission line

Country Status (1)

Country Link
JP (1) JPS54110851A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5058981A (en) * 1988-12-05 1991-10-22 Sumitomo Electric Industries, Ltd. Light source device
US5261017A (en) * 1992-11-17 1993-11-09 Gte Laboratories Incorporated Optical waveguide enhanced laser to fiber coupling

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5058981A (en) * 1988-12-05 1991-10-22 Sumitomo Electric Industries, Ltd. Light source device
US5261017A (en) * 1992-11-17 1993-11-09 Gte Laboratories Incorporated Optical waveguide enhanced laser to fiber coupling

Also Published As

Publication number Publication date
JPS5612841B2 (en) 1981-03-25

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