• DocumentCode
    1080138
  • Title

    Characteristics of a hemispherical microlens for coupling between a semiconductor laser and single-mode fiber

  • Author

    Yamada, Jun-Ichi ; Murakami, Yasuji ; Sakai, Jun-ichi ; Kimura, Tatsuya

  • Author_Institution
    NTT Public Corp., Musashino-shi, Tokyo, Japan
  • Volume
    16
  • Issue
    10
  • fYear
    1980
  • fDate
    10/1/1980 12:00:00 AM
  • Firstpage
    1067
  • Lastpage
    1072
  • Abstract
    A hemispherical microlens is fabricated on the end of a single-mode fiber by an electric arc discharge technique. It improves coupling efficiency between InGaAsP lasers with buried heterostructure geometry and single-mode fiber. The lowest coupling loss of 2.9 dB is achieved with the optimum lens radius of 8.5 μm. This loss is 4.4 dB lower than that with a butt joint. Experimental results of coupling efficiency and alignment tolerances in coupling with different lens radii in the range of 3.5-17 \\mu m are discussed in detail. The results are in good agreement with theoretical values derived by Gaussian beam and paraxial ray approximations.
  • Keywords
    Gallium materials/lasers; Laser couplers; Lenses; Optical fiber coupling; Fiber lasers; Laser beams; Lenses; Microoptics; Optical coupling; Optical fiber losses; Optical fibers; Repeaters; Semiconductor lasers; Silicon compounds;
  • fLanguage
    English
  • Journal_Title
    Quantum Electronics, IEEE Journal of
  • Publisher
    ieee
  • ISSN
    0018-9197
  • Type

    jour

  • DOI
    10.1109/JQE.1980.1070355
  • Filename
    1070355
    • Link To Document
    https://search.isc.ac/dl/search/defaultta.aspx?DTC=49&DC=1080138