Title :
Integrated optical frequency modulator for fibre-optic gyroscope using frequency modulation method
Author :
Shimizu, Hiroshi ; Ishikawa, Ryo ; Kaede, Kazunori
Author_Institution :
NEC Corporation, Opto-Electronics Research Laboratories, Kawasaki, Japan
Abstract :
An integrated optical frequency modulator has been developed for a fibre-optic gyroscope using the frequency modulation method. A low insertion loss of 14 dB, which enables a 10¿6 rad/s sensitivity, was obtained by realising low coupling loss between the single-mode fibre and titanium-diffused LiNbO3 slab waveguide.
Keywords :
acousto-optical devices; fibre optic sensors; frequency modulation; gyroscopes; integrated optics; lithium compounds; optical modulation; optical waveguide components; titanium; Bragg diffraction; IDT; LiNbO3:Ti slab waveguide; SAI; acousto-optical device; fibre-optic gyroscope; frequency modulation; geodesic lens; integrated optical frequency modulator; interdigital transducers; low coupling loss; low insertion loss; single-mode fibre;
Journal_Title :
Electronics Letters
DOI :
10.1049/el:19860229
