Improving Locking Accuracy of Resonant Optical Gyroscope by Laser and Acoustooptic Frequency Shifter Jointed Pound-Drever-Hall Technique. Issue 2 (4th March 2019)

• Record Type: Journal Article
• Authors: Zhang, Rong; Wang, Cong; Wang, Heng; Li, Xiuli; Li, Jiaxuan; Kong, Mei
• Is Part Of: Fiber and integrated optics. Volume 38:Issue 2(2019)
• Page Start: 106
• Page End: 116
• Publication Date: 2019-03-04
• Subjects: Resonant optical gyroscope -- locking of gyroscope -- Pound-Drever-Hall technique -- acoustooptic frequency shifter; Fiber optics -- Periodicals; Integrated optics -- Periodicals; Optical communications -- Periodicals; 621.3692
• DOI: 10.1080/01468030.2019.1579395
• Languages: English
• ISSNs: 0146-8030

Abstract

ABSTRACT: A laser and acoustooptic frequency shifter jointed Pound-Drever-Hall technique is designed to lock the resonant optical gyroscope. Utilizing direct digital synthesizer (DDS) technology and temperature control in the driver, the frequency-shift precision of the acoustooptic frequency shifter higher than 1 Hz is obtained. Experiments show that compared with locking by tuning the laser only, the zero-bias stability of the gyroscope is improved. In this locking scheme, there are few additional devices, the tuning of the laser and the acoustooptic frequency shifter share a common Pound-Drever-Hall locking system, and the demodulation and the locking algorithms are simple.