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Sensors 2017, 17(1), 100;

Under-Coupling Whispering Gallery Mode Resonator Applied to Resonant Micro-Optic Gyroscope

Key Laboratory of Instrumentation Science & Dynamic Measurement of Ministry of Education, North University of China, Taiyuan 030051, China
Author to whom correspondence should be addressed.
Academic Editor: Vittorio M. N. Passaro
Received: 17 November 2016 / Revised: 26 December 2016 / Accepted: 3 January 2017 / Published: 6 January 2017
(This article belongs to the Section Physical Sensors)
Full-Text   |   PDF [6286 KB, uploaded 6 January 2017]   |  


As an important sensing element, the whispering gallery mode resonator (WGMR) parameters seriously affect the resonant micro-optic gyroscope (RMOG) performance. This work proposes an under-coupling resonator to improve the resonator’s Q value and to optimize the coupling coefficient to maximize the RMOG’s sensitivity. GeO2-doped silica waveguide-type resonators with different coupling coefficients were simulated, designed, fabricated and tested. An under-coupling ring resonator with a quality factor of 10 million is reported. The RMOG system was built based on this resonator and the scale factor was tested on a uniaxial high-precision rotating platform. Experimental results show that this resonator could improve the RMOG sensitivity by five times. View Full-Text
Keywords: waveguides; planar; resonators; Sagnac effect; gyroscopes waveguides; planar; resonators; Sagnac effect; gyroscopes

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Qian, K.; Tang, J.; Guo, H.; Liu, W.; Liu, J.; Xue, C.; Zheng, Y.; Zhang, C. Under-Coupling Whispering Gallery Mode Resonator Applied to Resonant Micro-Optic Gyroscope. Sensors 2017, 17, 100.

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