JPS57155524A - Optical coupling system - Google Patents

Optical coupling system

Info

Publication number
JPS57155524A
JPS57155524A JP4135181A JP4135181A JPS57155524A JP S57155524 A JPS57155524 A JP S57155524A JP 4135181 A JP4135181 A JP 4135181A JP 4135181 A JP4135181 A JP 4135181A JP S57155524 A JPS57155524 A JP S57155524A
Authority
JP
Japan
Prior art keywords
lens
elliptic
axis
circular
light source
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
JP4135181A
Other languages
Japanese (ja)
Inventor
Shigefumi Masuda
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 JP4135181A priority Critical patent/JPS57155524A/en
Publication of JPS57155524A publication Critical patent/JPS57155524A/en
Pending legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01S—DEVICES USING THE PROCESS OF LIGHT AMPLIFICATION BY STIMULATED EMISSION OF RADIATION [LASER] TO AMPLIFY OR GENERATE LIGHT; DEVICES USING STIMULATED EMISSION OF ELECTROMAGNETIC RADIATION IN WAVE RANGES OTHER THAN OPTICAL
    • H01S3/00—Lasers, i.e. devices using stimulated emission of electromagnetic radiation in the infrared, visible or ultraviolet wave range
    • H01S3/005—Optical devices external to the laser cavity, specially adapted for lasers, e.g. for homogenisation of the beam or for manipulating laser pulses, e.g. pulse shaping
    • 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

Abstract

PURPOSE:To convert an elliptic beam into a circular beam by arranging a lens system at some angle to the optical axis of the elliptic laser beam. CONSTITUTION:The optical axis 7 of a laser light source 1 arranged at the focal point of a lens 5 on the center axis 6 of the lens has an angle alpha to the center axis 6. In this case, alpha=cos<-1>b/a, where (a) is the long axis of an elliptic laser beam emitted from the laser light source and (b) is the short axis. Consequently, the laser beam having ellipticity b/a as the emitted light 2 from the laser light source 1 is converted by the principal point surface 8 of the lens 5 into a circular beam, which is caused through the 2nd lens 9 to illuminate the coupling end surface 11 of the circular core of an optical fiber 10. When the ellipticity is large, the elliptic beam is converted into a circular beam finally through plural lenses.
JP4135181A 1981-03-20 1981-03-20 Optical coupling system Pending JPS57155524A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP4135181A JPS57155524A (en) 1981-03-20 1981-03-20 Optical coupling system

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP4135181A JPS57155524A (en) 1981-03-20 1981-03-20 Optical coupling system

Publications (1)

Publication Number Publication Date
JPS57155524A true JPS57155524A (en) 1982-09-25

Family

ID=12606083

Family Applications (1)

Application Number Title Priority Date Filing Date
JP4135181A Pending JPS57155524A (en) 1981-03-20 1981-03-20 Optical coupling system

Country Status (1)

Country Link
JP (1) JPS57155524A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0667545A1 (en) * 1994-02-12 1995-08-16 Robert Bosch Gmbh Device for matching the different field distributions of light beams
EP0767392A1 (en) * 1995-10-06 1997-04-09 AT&T Corp. Apparatus for minimizing spherical aberration of light beam emitted into an optical fibre and using radial displacement of corrective lens

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0667545A1 (en) * 1994-02-12 1995-08-16 Robert Bosch Gmbh Device for matching the different field distributions of light beams
EP0767392A1 (en) * 1995-10-06 1997-04-09 AT&T Corp. Apparatus for minimizing spherical aberration of light beam emitted into an optical fibre and using radial displacement of corrective lens

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