Design and simulation of integrated optic ring resonator based devices

A wide free spectral range (FSR) quadruple optical ring resonator (QORR) made of silicon on insulator (SOI) as an optical filter has been investigated in this article. FSR obtained in this article is well in the range of commercial communication like dense wavelength division multiplexing (DWDM) systems standard. The underlying principle of analysis is delay line signal processing in z-domain, Mason's Gain formula and Vernier Principle. This QORR is able to produce an FSR of 1175 THz with crosstalk limited within -50dB which is much less than the stipulated limit of -30dB. Group delay, dispersion, finesse have also been analyzed.

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