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Towards a Realistic Modelling of Ultra-Compact Racetrack Resonators

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5 Author(s)
Masi, M. ; Dept. of Phys., Univ. of Trento, Trento, Italy ; Orobtchouk, R. ; Guofang Fan ; Fedeli, J.-M.
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We discuss all the necessary parameters to describe optical racetrack micro resonators fabricated with silicon on insulator (SOI) technology. We focus on some fundamental aspects crucial for a comprehensive and realistic modelling of racetrack resonators as building blocks of complex add-drop filters, like SCISSOR (Side-Coupled Integrated Spaced-Sequences of Resonators) or CROW (Coupled Resonator Optical Waveguides). When the radius of curvature is lower than 5 μm, and/or the separation gaps between waveguide and resonator is small, dispersion law, effective index mismatch, and mode mismatch between bend and straight waveguides are relevant for modelling. A new mode solver, specifically suited for high index contrast small mode area waveguides, is used whose results are compared with the measurement of the optical response of some resonant devices.

Published in:

Lightwave Technology, Journal of  (Volume:28 ,  Issue: 22 )

Date of Publication:

Nov.15, 2010

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