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

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

1,*  and 2
1 School of Physics, University of Melbourne, Parkville, VIC 3010, Australia 2 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.
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) which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

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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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