Title :
Bias reduction by polarisation dispersion in the fibre-optic gyroscope
Author :
Jones, E. ; Parker, J.W.
Author_Institution :
Standard Telecommunication Laboratories Ltd., Harlow, UK
Abstract :
In a `reciprocal architecture¿ FOG a single-mode filter is used to reduce bias drift resulting from changing fibre birefringence. We show that if a birefringent element is combined with this filter the bias is reduced if the dispersion in the element exceeds the source coherence length. This significantly relaxes the requirements for mode filter extinction.
Keywords :
birefringence; fibre optic sensors; gyroscopes; light polarisation; optical filters; optical waveguide theory; spatial filters; bias drift reduction; birefringent element; fibre-optic gyroscope; mode filter extinction; polarisation dispersion; reciprocal architecture; single-mode filter; source coherence length;
Journal_Title :
Electronics Letters
DOI :
10.1049/el:19860037
