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Ultra-low Volume Tunable Slot Photonic Crystal Cavities for Sensing

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Abstract

Properties of non-freestanding silicon slot photonic crystal cavities for application to sensing are investigated by probing their resonance wavelength tuning as a function of covering material index. Sensitivities of 225 nm/RIU are obtained with Q around 30,000 and cavity mode volumes V=0.03(/n)3.

© 2014 Optical Society of America

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