Abstract
A gyroscope structure with tailored local dispersion profile to enhance sensitivity is proposed, which uses lithium niobate (LiNbO3) thin film as the on-chip material of gyroscope’s resonator. A Mach–Zehnder interferometer (MZI) structure as a coupler, which induces a different reference phase shift in each arm, is inserted into the position between ring resonator and output bus waveguide. Through modulating reference phase shift in MZI, theoretical rotation sensitivity enhancement as large as one order of magnitude is presented.
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Acknowledgments
This work was supported by the International S&T Cooperation Program of China (No. 2014DFA52000), National Natural Science Foundation of China (Nos. 11574021, 51172009), and the Fundamental Research Funds for the Central Universities (YWF-15-WLXY-005).
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Zhang, H., Liu, J., Lin, J. et al. On-chip tunable dispersion in a ring laser gyroscope for enhanced rotation sensing. Appl. Phys. A 122, 501 (2016). https://doi.org/10.1007/s00339-016-0008-9
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DOI: https://doi.org/10.1007/s00339-016-0008-9