Inspec keywords: optical filters; gyroscopes; fibre optic sensors; optical waveguide theory; light polarisation; birefringence; spatial filters

Other keywords: source coherence length; polarisation dispersion; fibre-optic gyroscope; bias drift reduction; mode filter extinction; reciprocal architecture; single-mode filter; birefringent element

Subjects: Optical propagation and transmission in homogeneous and anisotropic media; birefringence; Optical waveguides and couplers; Fibre optic sensors; Spatial filters, zone plates, and polarizers; Sensing devices and transducers; Fibre optics; Fibre optics and fibre waveguides