Journal article

Temperature stabilization of optofluidic photonic crystal cavities

Christian Karnutsch, Cameron LC Smith, Alexandra Graham, Snjezana Tomljenovic-Hanic, Ross McPhedran, Benjamin J Eggleton, Liam O'Faolain, Thomas F Krauss, Sanshui Xiao, N Asger Mortensen



We present a principle for the temperature stabilization of photonic crystal (PhC) cavities based on optofluidics. We introduce an analytic method enabling a specific mode of a cavity to be made wavelength insensitive to changes in ambient temperature. Using this analysis, we experimentally demonstrate a PhC cavity with a quality factor of Q≈15 000 that exhibits a temperature-independent resonance. Temperature-stable cavities constitute a major building block in the development of a large suite of applications from high-sensitivity sensor systems for chemical and biomedical applications to microlasers, optical filters, and switches. © 2009 American Institute of Physics.

University of Melbourne Researchers


Awarded by Danish Council

Awarded by Danish Council for Technology and Production Sciences

Funding Acknowledgements

The authors at USYD acknowledge the support of the Australian Research Council through its Federation Fellow, Centre of Excellence and Discovery Grant programs, and the support of the School of Physics, through its Denison Foundation and the International Science Linkages program by the ISL DEST grant. The silicon samples were fabricated in the framework of the EU-FP6 funded ePIXnet Nanostructuring Platform for Photonic Integration (www.nanophotonics. eu). The authors at DTU acknowledge financial support by the Danish Council for Strategic Research (DSF Grant No. 2117-05-0037) and the Danish Council for Technology and Production Sciences (FTP Grant No. 274-07-0379)