Summary form only given. Perhaps the most important MMI structure is the 2/spl times/2 coupler, due to its use in such a variety of photonic integrated circuits. We propose here a new MMI stucture which reduces the proximity limitations by allowing the access waveguides to be well separated. This device allows for a major reduction in the device length through a taper of the MMI region width along the propagation axis. The shape of the MMI region is designed in such a manner that the splitting ratio at the end of the MMI region is preserved, even at the 3dB point. Numerical simulations of several such MMI structure designs are given.


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    Title :

    A new design for ultracompact multimode interference-based 2/spl times/2 couplers


    Contributors:
    Levy, D.S. (author) / Scarmozzino, R. (author) / Li, Y.M. (author) / Osgood, R.M. (author)


    Publication date :

    1997-01-01


    Size :

    176398 byte





    Type of media :

    Conference paper


    Type of material :

    Electronic Resource


    Language :

    English



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