Microfluidic photonic crystal double heterostructures
Cameron LC Smith, Darran KC Wu, Michael W Lee, Christelle Monat, Snjezana Tomljenovic-Hanic, Christian Grillet, Benjamin J Eggleton, Darren Freeman, Yinlan Ruan, Steve Madden, Barry Luther-Davies, Harald Giessen, Yong-Hee Lee
APPLIED PHYSICS LETTERS | AMER INST PHYSICS | Published : 2007
We demonstrate postprocessed and reconfigurable photonic crystal double-heterostructure cavities via selective fluid infiltration. We experimentally investigate the microfluidic cavities via evanescent probing from a tapered fiber at telecommunication wavelengths. Fabry-Ṕrot fringes associated with modes of the induced cavity are in good agreement with the theory. We also demonstrate a cavity with quality factor Q=4300. Our defect-writing technique does not require nanometer-scale alterations in lattice geometry and may be undertaken at any time after photonic crystal waveguide fabrication. © 2007 American Institute of Physics.