The FDTD simulation of microring feedback bend-based coupling resonator system for electromagnetically-induced transparency-like effect
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A microring feedback bend-based coupling resonant system is proposed and is finite difference time domain (FDTD)-simulated to generate electromagnetically-induced transparency (EIT)-like transmission and mode distribution. The coupling between the cross-section of the waveguides gives rise to EIT-like spectrum. Most of the mode field energy is concentrated in the coupling region of the feedback bend. The full-width at half-maximum (FWHM) can be tuned by controlling the gap parameter between two feedback bends. The device enables integration with some photonic devices on a chip and shows great promise in applications such as fast–slow light and optical filters.
KeywordsIntegrated optics microring resonators electromagnetically-induced transparency-like effect finite difference time domain
PACS Nos42.50.Gy 42.82.Et 02.70Bf
This work was supported by the National Natural Science Foundation of China (Grant Number 11504074) and the State Key Laboratory of Quantum Optics and Quantum Optics Devices, Shanxi University, Shanxi, China (Grant Number KF201801).