Mode evolutions in 2x2 microring resonator arrays

Xiaobei Zhang; Dexiu Huang; Xinliang Zhang

doi:10.1117/12.743158

21 November 2007 Mode evolutions in 2x2 microring resonator arrays

Xiaobei Zhang, Dexiu Huang, Xinliang Zhang

Proceedings Volume 6781, Passive Components and Fiber-based Devices IV; 678150 (2007) https://doi.org/10.1117/12.743158
Event: Asia-Pacific Optical Communications, 2007, Wuhan, China

Abstract

A 2×2 microring resonator array is investigated analytically and numerically in this paper. Based on the transfer matrix formalisms, its analytical model is developed for characterizing the transmission spectrum. When the coupling coefficients are in a medium range, there are two zero transmissions symmetrically locating between four unit peaks. The envelope of the transmission spectrum varies greatly as coupling coefficients change, which is called the mode evolution. It is found that mode evolutions are highly sensitive to the inter-resonator coupling coefficient when it is small and the waveguide-resonator coupling coefficient when it is large. Rigorous finite-difference time-domain simulations show agreement with the analytical model. Mode Evolutions are expected to be used for wavelength selectors and sensors.

Citation Download Citation

Xiaobei Zhang, Dexiu Huang, and Xinliang Zhang "Mode evolutions in 2x2 microring resonator arrays", Proc. SPIE 6781, Passive Components and Fiber-based Devices IV, 678150 (21 November 2007); https://doi.org/10.1117/12.743158

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