Performance of optical microring resonator as multiplexer and all-optical logic shifter in Z-domain

摘要

The performance of 4 × 1 multiplexer (MUX) and 8 × 1 multiplexer (MUX) using GaAs-AlGaAs based optical microring resonator (OMRR) is presented. The 4 × 1 MUX is designed with two OMRR and 8 × 1 MUX is designed with three OMRR. The proposed structure of 8 × 1 MUX is further used to design 8-bit logic shifter circuit. The nonlinear property of OMRR is used as an optical switch in all the optical logic circuits. The performance of 4 × 1 MUX, 8 × 1 MUX, and 8-bit logic shifter circuit is analyzed using Z-domain model. The various important parameters of the proposed model, such as on-off ratio [τ_(on-off(dB))]. full-width half maximum (FWHM), Q-factor, extinction ratio [ξ_(ER(dB))]. contrast ratio [χ_(CR(dB))] amplitude modulation [η_(AM(db))], are also analyzed.