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Microfluidic photonic crystal double heterostructures

2007; American Institute of Physics; Volume: 91; Issue: 12 Linguagem: Inglês

10.1063/1.2785988

1520-8842

Cameron L. C. Smith, Darran K. C. 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, Jeong Yong Lee,

Advanced Fiber Optic Sensors

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-Pérot 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.