Abstract
A novel structure of double-ring slow-light gyroscope with two input–output waveguides is studied. We utilize interferometric detection method, and sufficiently combine the advantages of Interferometric Fiber Optic Gyro (I-FOG) and Resonator Optic Gyro (ROG). The responses of the structure are derived and simulated. Here two experimental schemes are also proposed. By applying a square wave to the integrated phase modulator, we can make the structure work at the highest sensitivity. After applied the square wave, the system runs at linear zone, thus the angular velocity can be obtained according to the linear relationship between the phase difference and the angular velocity. The optimal parameters for the largest phase difference of light signal monitored at different output ports are investigated. Some comparisons are done in the condition of various values of transmission loss coefficients.
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