JPS57212409A - Coupler of laser diode and optical fiber - Google Patents

Coupler of laser diode and optical fiber

Info

Publication number
JPS57212409A
JPS57212409A JP9785581A JP9785581A JPS57212409A JP S57212409 A JPS57212409 A JP S57212409A JP 9785581 A JP9785581 A JP 9785581A JP 9785581 A JP9785581 A JP 9785581A JP S57212409 A JPS57212409 A JP S57212409A
Authority
JP
Japan
Prior art keywords
optical fiber
rod lens
laser diode
lens
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
JP9785581A
Other languages
Japanese (ja)
Other versions
JPS614086B2 (en
Inventor
Toshihiko Sugie
Masatoshi Saruwatari
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.)
Nippon Telegraph and Telephone Corp
Original Assignee
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 Nippon Telegraph and Telephone Corp filed Critical Nippon Telegraph and Telephone Corp
Priority to JP9785581A priority Critical patent/JPS57212409A/en
Publication of JPS57212409A publication Critical patent/JPS57212409A/en
Publication of JPS614086B2 publication Critical patent/JPS614086B2/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
    • G02B6/4206—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 decrease the effect of the reflected light, by having a curved incident surface of a focusing rod lens and securing the coincidence between the focal distance ratio between a condensing rod lens and a focusing rod lens and the ratio between the beam radius of an optical fiber and the radius of the geometrical means beam of a laser diode. CONSTITUTION:The light given from a laser diode 1 is connected to the core 5 of an optical fiber 4 via a condensing ball lens 2 and a focusing rod lens 3. The incident surface 7 of the lens 3 is curved, and accordingly the reflected beams on the surface 7 are not parallel to each other and not fused at a light emitting part of the laser as shown by the dotted lines. At the same time, an equation is satisfied, where the focal distances of the lenses 2 and 3 are set at f1 and f2 respectively, the horizontal and vertical beam waist radii of the active layer of the diode 1 are set W11 and W1, and the beam waist radius of the fiber 4 is set W0 respectively.
JP9785581A 1981-06-24 1981-06-24 Coupler of laser diode and optical fiber Granted JPS57212409A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP9785581A JPS57212409A (en) 1981-06-24 1981-06-24 Coupler of laser diode and optical fiber

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP9785581A JPS57212409A (en) 1981-06-24 1981-06-24 Coupler of laser diode and optical fiber

Publications (2)

Publication Number Publication Date
JPS57212409A true JPS57212409A (en) 1982-12-27
JPS614086B2 JPS614086B2 (en) 1986-02-06

Family

ID=14203349

Family Applications (1)

Application Number Title Priority Date Filing Date
JP9785581A Granted JPS57212409A (en) 1981-06-24 1981-06-24 Coupler of laser diode and optical fiber

Country Status (1)

Country Link
JP (1) JPS57212409A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS59166910A (en) * 1983-03-14 1984-09-20 Agency Of Ind Science & Technol Composite rod lens having spherical distribution refractive index
JPH05121841A (en) * 1991-10-25 1993-05-18 Nec Corp Semiconductor laser module
US11112084B1 (en) * 2015-02-13 2021-09-07 Jerome H. Simon Refracting elements, including ball lenses that concentrate and provide unobstructed optical pathways from multiple light sources

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS59166910A (en) * 1983-03-14 1984-09-20 Agency Of Ind Science & Technol Composite rod lens having spherical distribution refractive index
JPH0330842B2 (en) * 1983-03-14 1991-05-01 Kogyo Gijutsuin
JPH05121841A (en) * 1991-10-25 1993-05-18 Nec Corp Semiconductor laser module
US11112084B1 (en) * 2015-02-13 2021-09-07 Jerome H. Simon Refracting elements, including ball lenses that concentrate and provide unobstructed optical pathways from multiple light sources

Also Published As

Publication number Publication date
JPS614086B2 (en) 1986-02-06

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