Title :
Angular Velocity Sensing Based on Double-Ring Slow-Light Structure
Author :
Hong Gu ; Yan Cui ; Jinwen Luan
Author_Institution :
Sch. of Sci., Tianjin Polytech. Univ., Tianjin, China
Abstract :
An optical gyroscope comprising a double-ring slow-light structure (DRSLS) coupled by a 3 × 3 coupler is presented. A technique for improving the sensitivity of the detection of the angular velocity is analyzed in detail. The expression for the rotation phase difference of the DRSLS between the counter-propagating waves is derived and discussed. In our experiment, a Y-waveguide integrated phase modulator is used as the light beam splitter and combiner. After applying a square wave to the modulator, the best sensitivity of the system is obtained, and the complexity of the signal detection is greatly reduced.
Keywords :
angular velocity measurement; integrated optics; optical beam splitters; optical couplers; optical modulation; optical rotation; optical sensors; optical waveguides; phase modulation; photodetectors; slow light; Y-waveguide integrated phase modulator; angular velocity detection; angular velocity sensing; counter-propagating waves; double-ring slow-light structure; light beam combiner; light beam splitter; optical coupler; optical gyroscope; rotation phase difference; signal detection; square wave; Angular velocity; Couplers; Interference; Optical sensors; Optical waveguides; Optimized production technology; Sensitivity; Rotation sensing; group dispersion; rotation sensing; slow light;
Journal_Title :
Photonics Technology Letters, IEEE
DOI :
10.1109/LPT.2015.2475157
