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Published October 20, 2003 | public
Journal Article Open

Optical annular resonators based on radial Bragg and photonic crystal reflectors

Abstract

A ring resonator based on Bragg reflection is studied in detail. Closed form expressions for the field and dispersion curves for radial Bragg gratings and photonic crystals based resonators are derived and compared to FDTD simulations. For strong confinement, the required gratings exhibit a chirped period and a varying index profile. Small bending radii and low radiation losses are shown to be possible due to the Bragg confinement. The sensitivity of the resonator characteristics to fabrication errors is analyzed quantitatively. A mixed confinement configuration utilizing both Bragg reflection and total internal reflection is also suggested and analyzed.

Additional Information

© 2003 Optical Society of America. Received October 08, 2003; Revised October 13, 2003. The authors would like to thank George T. Paloczi and Joyce K. S. Poon for helpful discussions and comments, and the reviewers for important suggestions. This research was supported by DARPA, the U.S. Office of Naval Research and the U.S. Air Force Office of Scientific Research.

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Additional details

Created:
August 22, 2023
Modified:
October 13, 2023