Yj. Rao et al., Simultaneous measurement of displacement and temperature using in-fibre-Bragg-grating-based extrinsic Fizeau sensor, ELECTR LETT, 36(19), 2000, pp. 1610-1612
A novel method for simultaneously measuring displacement and temperature us
ing an in-fibre-Bragg-grating (FBG) based extrinsic Fizeau interferometric
sensor is presented. The Fizeau cavity is formed by an FBG with low reflect
ivity and a highly reflective surface. The FBG acts as both a reflector for
the Fizeau interferometer and a temperature sensor, at the same time. Expe
rimental results are provided which demonstrate the feasibility of this sen
sor design.