Demonstration of a refractometric sensor based on optical microfiber coil resonator

We experimentally demonstrated a refractometric sensor based on a coated optical microfiber coil resonator. It is robust, compact, and comprises an intrinsic fluidic channel. A sensitivity of about 40 nm/RIU (refractive index unit) has been measured, in agreement with predictions. (C) 2008 American Institute of Physics.