  The design and experimental demonstration of a large-area,
ultra-high-Q-factor and single-mode operation silicon ring resonator based on a
strip silicon photonic waveguide are presented, which is suitable for photon
gyroscopic application. Based on these designs, simulation results show that
the resonance depth is 0.9979 while the resonator is in an undercoupled state
with the coupling length L=2um and coupling gap d=0.2um. For the fabricated
resonator, the ultrahigh Q factor of 1.54*106 is experimentally demonstrated,
with the free spectrum range (FSR) of 0.036nm and the resonance depth is
0.9810.
