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Title: High-Q microsphere resonators for angular velocity sensing in gyroscopes

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 10{sup 6} or more before packaging with a low refractive curable ultraviolet polymer, although it drops to approximately 10{sup 5} after packaging. In addition, a rotating test platform is built, and the transmission spectrum and discriminator curves of a microsphere cavity with Q of 3.22×10{sup 6} are measured using a semiconductor laser (linewidth less than 1 kHz) and a real-time 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{sup ∘}/s.
Authors:
 [1] ;  [2] ;  [3] ; ; ;  [1] ;  [2] ;  [4]
  1. Key Laboratory of Instrumentation Science and Dynamic Measurement, Ministry of Education, Taiyuan 030051 (China)
  2. (China)
  3. Science and Technology on Electronic Test and Measurement Laboratory, North University of China, Taiyuan 030051 (China)
  4. Department of Mechanical Engineering, Louisiana State University, Baton Rouge, Louisiana 70803 (United States)
Publication Date:
OSTI Identifier:
22412629
Resource Type:
Journal Article
Resource Relation:
Journal Name: Applied Physics Letters; Journal Volume: 106; Journal Issue: 6; Other Information: (c) 2015 AIP Publishing LLC; Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
71 CLASSICAL AND QUANTUM MECHANICS, GENERAL PHYSICS; ANGULAR VELOCITY; APPROXIMATIONS; COUPLING; ELECTRIC POTENTIAL; FEEDBACK; FIBERS; GYROSCOPES; HYDROGEN; KHZ RANGE; MELTING; POLYMERS; QUALITY FACTOR; RESONATORS; ROTATION; SEMICONDUCTOR LASERS; ULTRAVIOLET RADIATION; WATER