OP9 - An integrated optical scheme for interrogation of interferometric fiber optic sensors

A. S. Kozlov, I. V. Ilichev & A. V. Shamray
Fiber optical interferometers are widely used as the sensing elements for measurements of temperature, electric and magnetic fields, acoustic and seismic waves, applied strain etc, because of its high sensitivity, large dynamic range, and convenience for multiplexing [1]. The output of an interferometer is a cosine function of the phase difference between two arms. The phase difference drifts because of the low frequency random temperature and pressure fluctuations, which interferometer arms experience. The drift causes...