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Proceedings Paper

Phase-matched lossy microring resonator add/drop multiplexers
Author(s): Otto Schwelb
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Paper Abstract

Phase matching of the signal paths between input and drop ports significantly improves filter characteristics and results in a box-like passband and a deeply suppressed, flat stopband. As a result add/drop multiplexers built with only two filter elements, each consisting of a chain of one, two, or three series coupled microrings exhibit satisfactory filter characteristics and very moderate degradation due to resonator loss. Accurate phase matching however requires thermooptic or electrooptic tuning, usually embedded in one arm of the multiplexer. Analytical and simulated results are presented covering transmission and group delay characteristics, sensitivity to waveguide loss and free spectral range (FSR) extension techniques. A temperature/stress sensor application is also proposed.

Paper Details

Date Published: 8 September 2006
PDF: 10 pages
Proc. SPIE 6343, Photonics North 2006, 63433P (8 September 2006); doi: 10.1117/12.708044
Show Author Affiliations
Otto Schwelb, Concordia Univ. (Canada)


Published in SPIE Proceedings Vol. 6343:
Photonics North 2006
Pierre Mathieu, Editor(s)

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