Journal article

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

Snjezana Tomljenovic-Hanic, C Martijn de Sterke

SENSORS | MDPI AG | Published : 2013


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~10(6). Numerical calculations indicate a large number of high-Q modes with high sensitivity, which are ideal for simultaneous, multi-parameter refractive index-based sensing.

University of Melbourne Researchers


Awarded by ARC Australian Research Fellowship

Funding Acknowledgements

Snjezana Tomljenovic-Hanic is supported by the ARC Australian Research Fellowship (DP1096288). This work was partly supported with the assistance of the Australian Research Council (ARC) under the ARC Centres of Excellence Program and by an award under the Merit Allocation Scheme on the National Facility of the National Computational Infrastructure. We acknowledge useful discussions with Michael J. Steel, Adel Rahmani, Andrew D. Greentree, Christian Karnutsch, Timothy J. Karle and Judith M. Dawes.