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Proceedings Paper

Mode evolutions in 2x2 microring resonator arrays
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Paper 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.

Paper Details

Date Published: 21 November 2007
PDF: 8 pages
Proc. SPIE 6781, Passive Components and Fiber-based Devices IV, 678150 (21 November 2007); doi: 10.1117/12.743158
Show Author Affiliations
Xiaobei Zhang, Huazhong Univ. of Science and Technology (China)
Dexiu Huang, Huazhong Univ. of Science and Technology (China)
Xinliang Zhang, Huazhong Univ. of Science and Technology (China)


Published in SPIE Proceedings Vol. 6781:
Passive Components and Fiber-based Devices IV
Ming-Jun Li; Jianping Chen; Satoki Kawanishi; Ian H. White, Editor(s)

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