Physics – Optics
Scientific paper
2004-09-14
J. Opt. Soc. B., 2285 (2004)
Physics
Optics
19 pages, 12 figures
Scientific paper
10.1117/12.544590
We propose and analyze a new type of a resonator in an annular geometry which is based on a single defect surrounded by radial Bragg reflectors on both sides. We show that the conditions for efficient mode confinement are different from those of the conventional Bragg waveguiding in a rectangular geometry. A simple and intuitive approach to the design of optimal radial Bragg reflectors is proposed and employed, yielding chirped gratings. Small bending radii and strong control over the resonator dispersion are possible by the Bragg confinement. A design compromise between large Free Spectral Range (FSR) requirements and fabrication tolerances is suggested.
Scheuer Jacob
Yariv Amnon
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