Pseudo-heterodyne detection scheme for the fibre gyroscope

Abstract

The results of a preliminary investigation of a phase-swept pseudo-heterodyne scheme suitable for use with all-fibre versions of the fibre gyroscope are presented. The output carrier, which is phase-modulated by the Sagnac shift, is generated by employing a sinusoidal phase modulation via a piezoelectric fibre stretcher in combination with selective detector gating