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Proceedings Paper

Optical microring resonator filter design trade-offs
Author(s): Alastair D. McAulay; Michael R. Corcoran; Christopher J. Florio; Ian B. Murray
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Paper Abstract

A microring resonator, a circular waveguide adjacent to a straight waveguide, performs selective band-stop filtering for optical telecommunications. Small size and versatility of functionality allow many microrings to be incorporated into a single integrated optic circuit. We desire small size, less than 20 micron radius; low insertion loss in band-stop outside resonance; perfect cancellation to zero in band-stop at resonance; and low refractive index difference between core and cladding. These requirements are conflicting: conventional silicon waveguides cannot achieve low enough loss at the desired bend radius. Current approaches use different materials with higher refractive index differences. Analysis and simulation provide evaluation of the trade-offs. Further, we propose, for the first time, conventional waveguides using Bragg reflectors surrounding the microring to reduce loss for improved performance. Simulation shows feasibility of this approach.

Paper Details

Date Published: 25 October 2004
PDF: 6 pages
Proc. SPIE 5595, Active and Passive Optical Components for WDM Communications IV, (25 October 2004); doi: 10.1117/12.580694
Show Author Affiliations
Alastair D. McAulay, Lehigh Univ. (United States)
Michael R. Corcoran, Lehigh Univ. (United States)
Christopher J. Florio, Lehigh Univ. (United States)
Ian B. Murray, Lehigh Univ. (United States)

Published in SPIE Proceedings Vol. 5595:
Active and Passive Optical Components for WDM Communications IV
Achyut Kumar Dutta; Abdul Ahad Sami Awwal; Niloy K. Dutta; Yasutake Ohishi, Editor(s)

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