Title :
Digital closed-loop re-entrant fiber-optic rotation sensor with amplified Sagnac loop
Author :
Hu, Zhaoyang ; Zhang, Yanshen ; Pan, Zhenwu ; Tang, Quanan
Author_Institution :
Dept. of Precision Instrum., Tsinghua Univ., Beijing, China
Abstract :
A digital closed-loop re-entrant fiber-optic rotation sensor with an amplified Sagnac loop of 20-m length is investigated theoretically and experimentally. The detection sensitivity can be increased significantly by compensating for the roundtrip loss. The linearity of the scale factor between 600 and +600 deg/s is better than 1000 ppm by using a digital closed-loop approach.
Keywords :
closed loop systems; fibre optic sensors; integrated optics; light sources; optical losses; semiconductor optical amplifiers; sensitivity; 20 m; amplified Sagnac loop; detection sensitivity; digital closed-loop approach; digital closed-loop re-entrant fiber-optic rotation sensor; fiber-optic rotation sensor; linearity; re-entrant fiber-optic rotation sensor; roundtrip loss; scale factor; Integrated optics; Nonlinear optics; Optical fiber polarization; Optical fiber sensors; Optical interferometry; Optical resonators; Optical sensors; Sagnac interferometers; Semiconductor optical amplifiers; Stimulated emission;
Journal_Title :
Photonics Technology Letters, IEEE
