Journal
OPTICS EXPRESS
Volume 19, Issue 22, Pages 22191-22197Publisher
OPTICAL SOC AMER
DOI: 10.1364/OE.19.022191
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Funding
- NSERC (Canada)
- NSEC at Harvard
- AFOSR [FA9550-09-1-0669]
- Directorate For Engineering
- Div Of Electrical, Commun & Cyber Sys [0846684] Funding Source: National Science Foundation
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We present the design, fabrication and characterization of high-Q (Q=36,000) polymeric photonic crystal nanobeam cavities made of two polymers that have an ultra-low index contrast (ratio=1.15) and observed thermo-optical bistability at hundred microwatt power level. Due to the extended evanescent field and small mode volumes, polymeric nanobeam cavities are ideal platform for ultra-sensitive biochemical sensing. We demonstrate that these sensors have figures of merit (FOM=9190) two orders of magnitude greater than surface plasmon resonance based sensors, and outperform the commercial Biacore (TM) sensors. The demonstration of high-Q cavity in low-index-contrast polymers can open up versatile applications using a broad range of functional and flexible polymeric materials. (C) 2011 Optical Society of America
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