Sensitivity of photonic crystal fiber grating sensors: biosensing, refractive index, strain, and temperature sensing

By L. Rindorf, Ole Bang. 2007

152 citations recorded by the source corpus.

We study the sensitivity of fiber grating sensors in the applications of strain, temperature, internal label-free biosensing, and internal refractive index sensing. New analytical expressions for the sensitivities, valid for photonic crystal fibers are rigorously derived. These are generally valid, and we identify a previously unaccounted term for temperature and strain sensing. It is shown that dispersion plays a central role in determining the sensitivity, and that dispersion may enhance or suppress sensitivity as well as change the sign of the resonant wavelength shifts. We propose a quality factor, Q, for characterizing long period gratings sensors.

Subfields: Electrical and Electronic Engineering

View Paper: https://www.semanticscholar.org/paper/fe73feacd75eeaf01d8c4e1f35ee3a206d0bee7f