All-birefringent-fiber frequency-modulated continuous-wave Sagnac gyroscope

Jesse Zheng
2005 Optical Engineering: The Journal of SPIE  
An all-birefringent-fiber frequency-modulated continuous-wave ͑FMCW͒ Sagnac gyroscope is described. The rotation velocity of the gyroscope is determined by measuring the phase shift of the beat signal produced by the two counter-propagating laser beams in the birefringent fiber coil. A resolution of 0.02 deg/ sec with a 100-m fiber coil has been observed.
doi:10.1117/1.2000987 fatcat:ze3y2xkk5bectdlek6nzdkgije