The characteristics of the three-guide tapered coupler for an integrated optical isolator with a semiconductor guiding layer (GaInAsP) were experimentally studied. By the experiment for measuring power branching ratio, the unbalance of the ratio smaller than 2% was confirmed for wavelengths ranging between 1.50 and 1.58 /spl mu/m. The coupling to the central waveguide occurred when two light waves in the side waveguides were in phase. No output was coupled to the central waveguide when they were 180/spl deg/ out of phase. The isolation of more than 17dB will be achieved when the coupler is employed in the isolator.


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    Titel :

    Coupling characteristics of three-guide tapered coupler for integrated optical isolator with semiconductor guiding layer


    Beteiligte:
    Yokoi, H. (Autor:in) / Mizumoto, T. (Autor:in) / Shinjo, N. (Autor:in) / Futakuchi, N. (Autor:in) / Kaida, N. (Autor:in) / Nakano, Y. (Autor:in)


    Erscheinungsdatum :

    01.01.1999


    Format / Umfang :

    164263 byte




    Medientyp :

    Aufsatz (Konferenz)


    Format :

    Elektronische Ressource


    Sprache :

    Englisch



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