JPS5647015A - Coupling method of light emitting element and optical fiber - Google Patents

Coupling method of light emitting element and optical fiber

Info

Publication number
JPS5647015A
JPS5647015A JP12315779A JP12315779A JPS5647015A JP S5647015 A JPS5647015 A JP S5647015A JP 12315779 A JP12315779 A JP 12315779A JP 12315779 A JP12315779 A JP 12315779A JP S5647015 A JPS5647015 A JP S5647015A
Authority
JP
Japan
Prior art keywords
lens
emitting element
light emitting
light
face
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
JP12315779A
Other languages
Japanese (ja)
Other versions
JPS5749887B2 (en
Inventor
Tadashi Asano
Yoji Sonobe
Kunio Ishikawa
Yoshinori Yamazaki
Ikutaro Kobayashi
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.)
Anritsu Corp
Nippon Telegraph and Telephone Corp
Original Assignee
Anritsu Corp
Nippon Telegraph and Telephone 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 Anritsu Corp, Nippon Telegraph and Telephone Corp filed Critical Anritsu Corp
Priority to JP12315779A priority Critical patent/JPS5647015A/en
Publication of JPS5647015A publication Critical patent/JPS5647015A/en
Publication of JPS5749887B2 publication Critical patent/JPS5749887B2/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

Abstract

PURPOSE:To stably operate the light emitting element coupled to an optical fiber by the use of two lenses of the first and second by using a lens of a long focal length of the 2nd lens and making the stereoscopic angle of light to the end face of the optical fiber small. CONSTITUTION:The light from a light emitting element 11 is condensed by the 1st lens 12, and is imaged to the end face 15 of an optical fiber 14 by the 2nd lens 13. At this time, a lens of a long focal length is used for the lens 13 and the stereoscopic angle of the light 16 incident to the end face 15 of the fiber 14 from the lens 13 is made <=50% the stereoscopic angle of the light 17 going toward the lens 13 from the fiber 14. Hence, the amount that the light 17 emitted from the fiber 14 returns to the light emitting element 11 becomes less. In addition, it is possible to prevent the light 19 reflected at the end face 15 from returning to the light emitting element by inclining the end face 15 with respect to the optical axes of the lenses 12, 13. As a result, the light emitting element 11 may be operated stably.
JP12315779A 1979-09-27 1979-09-27 Coupling method of light emitting element and optical fiber Granted JPS5647015A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP12315779A JPS5647015A (en) 1979-09-27 1979-09-27 Coupling method of light emitting element and optical fiber

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP12315779A JPS5647015A (en) 1979-09-27 1979-09-27 Coupling method of light emitting element and optical fiber

Publications (2)

Publication Number Publication Date
JPS5647015A true JPS5647015A (en) 1981-04-28
JPS5749887B2 JPS5749887B2 (en) 1982-10-25

Family

ID=14853582

Family Applications (1)

Application Number Title Priority Date Filing Date
JP12315779A Granted JPS5647015A (en) 1979-09-27 1979-09-27 Coupling method of light emitting element and optical fiber

Country Status (1)

Country Link
JP (1) JPS5647015A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5873170A (en) * 1981-10-27 1983-05-02 Fujitsu Ltd Light emitting semiconductor device

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5873170A (en) * 1981-10-27 1983-05-02 Fujitsu Ltd Light emitting semiconductor device

Also Published As

Publication number Publication date
JPS5749887B2 (en) 1982-10-25

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