Journal
OPTICS EXPRESS
Volume 25, Issue 25, Pages 31739-31745Publisher
OPTICAL SOC AMER
DOI: 10.1364/OE.25.031739
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Funding
- National Natural Science Foundation of China [61675178, 61377023]
- National Key Research and Development Program [2016YFB0402502]
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We design and demonstrate a suspended high sensitivity silicon nitride (Si3N4) photonic crystal (PhC) nanobeam cavity sensor. By utilizing the higher order mode, the optical field distribution in the analytes increases dramatically and the light matter interaction between the optical mode and the analytes has been enhanced. A high sensitivity of 321 nm/refractive index unit (nm/RIU) has been experimentally achieved at the wavelength similar to 700 nm which is the highest value reported so far for a resonator based sensor at such a short wavelength. (C) 2017 Optical Society of America under the terms of the OSA Open Access Publishing Agreement
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