TITLE

High-Q microsphere resonators for angular velocity sensing in gyroscopes

AUTHOR(S)
Panlong An; Yongqiu Zheng; Shubin Yan; Chenyang Xue; Wanjun Wang; Jun Liu
PUB. DATE
February 2015
SOURCE
Applied Physics Letters;2/9/2015, Vol. 106 Issue 6, p1
SOURCE TYPE
Academic Journal
DOC. TYPE
Article
ABSTRACT
A resonator gyroscope based on the Sagnac effect is proposed using a core unit that is generated by water-hydrogen flame melting. The relationship between the quality factor Q and diameter D is revealed. The Q factor of the spectral lines of the microsphere cavity coupling system, which uses tapered fibers, is found to be 106 or more before packaging with a low refractive curable ultraviolet polymer, although it drops to approximately 105 after packaging. In addition, a rotating test platform is built, and the transmission spectrum and discriminator curves of a microsphere cavity with Q of 3.22 x 106 are measured using a semiconductor laser (linewidth less than 1 kHz) and a realtime proportional-integral circuit tracking and feedback technique. Equations fitting the relation between the voltage and angular rotation rate are obtained. According to the experimentally measured parameters, the sensitivity of the microsphere-coupled system can reach 0.095°/s.
ACCESSION #
101021772

 

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