Abstract

We demonstrate the use of tilted fiber gratings to assist the generation of localized infrared surface plasmons with short propagation lengths and a sensitivity of dλ/dn=3365  nm in the aqueous index regime. It was also found that the resonances could be spectrally tuned over 1000  nm at the same spatial region with high coupling efficiency (in excess of 25  dB) by altering the polarization of the light illuminating the device.

© 2007 Optical Society of America

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