Send to

Choose Destination
See comment in PubMed Commons below
Opt Express. 2007 Apr 16;15(8):4452-73.

Generalized formulation for performance degradations due to bending and edge scattering loss in microdisk resonators.

Author information

Lawrence Livermore National Laboratory, 7000 East Ave., Livermore, CA 94550, USA.


We present a generalized formulation for the treatment of both bending (whispering gallery) loss and scattering loss due to edge roughness in microdisk resonators. The results are applicable to microrings and related geometries. For thin disks with radii greater than the bend-loss limit, we find that the finesse limited by the scattering losses induced by edge roughness is independent of radii. While a strong lateral refractive index contrast is necessary to prevent bending losses, unless the radii are of the order of a few microns, lateral air-cladding is detrimental and only enhances scattering losses. The generalized formulation provides a framework for selecting the refractive index contrast that optimizes the finesse at a given radius.

PubMed Commons home

PubMed Commons


    Supplemental Content

    Full text links

    Icon for Optical Society of America
    Loading ...
    Support Center