Expanded-mode semiconductor lasers are of great interest due to the benefits of reduced far-field divergence and improved coupling efficiency to optical fiber. The authors present a new diode laser using a Tapered-Rib Adiabatic-Following Fiber Coupler (TRAFFiC) to achieve 2D mode expansion without epitaxial regrowth or sharply-defined tips on tapered waveguides. The expanded mode size would allow 0.25 to 1 dB coupling loss to standard telecommunications fiber making smaller-core specialty fibers unnecessary, increasing misalignment tolerance, and eliminating the need for coupling optics.


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    Title :

    Mode-expanded semiconductor laser with tapered-rib adiabatic-following fiber coupler


    Contributors:
    G. A. Vawter (author) / R. E. Smith (author) / H. Hou (author) / J. R. Wendt (author)

    Publication date :

    1996


    Size :

    4 pages


    Type of media :

    Report


    Type of material :

    No indication


    Language :

    English




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