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Sensors 2013, 13(3), 3262-3269; doi:10.3390/s130303262

Reconfigurable, Defect-Free, Ultrahigh-Q Photonic Crystal Microcavities for Sensing

School of Physics, University of Melbourne, Parkville, VIC 3010, Australia
ARC Centre of Excellence for Ultrahigh-bandwidth Devices for Optical Systems, and School of Physics, University of Sydney, Sydney, NSW 2006, Australia
Author to whom correspondence should be addressed.
Received: 4 January 2013 / Revised: 24 February 2013 / Accepted: 5 March 2013 / Published: 8 March 2013
(This article belongs to the Special Issue Photonic Crystal Sensors)
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We propose a new approach for creating reconfigurable high-Q cavities in defect-free photonic crystal slabs (PCSs). The approach relies on selective air-hole infiltration in otherwise defect-free PCSs. We show that using this method we can design ultrahigh-Q microcavities, with Q~106. Numerical calculations indicate a large number of high-Q modes with high sensitivity, which are ideal for simultaneous, multi-parameter refractive index-based sensing. View Full-Text
Keywords: photonic crystal slab; microcavity; infiltration; sensing photonic crystal slab; microcavity; infiltration; sensing

This is an open access article distributed under the Creative Commons Attribution License (CC BY 3.0).

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MDPI and ACS Style

Tomljenovic-Hanic, S.; de Sterke, C.M. Reconfigurable, Defect-Free, Ultrahigh-Q Photonic Crystal Microcavities for Sensing. Sensors 2013, 13, 3262-3269.

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