Theoretical investigation of phase-based all-optical NOT, XOR and XNOR logic gates based on AlGaAs microring resonators

摘要

We propose and numerically verify a phase-based all-optical logic gate (NOT, XOR and XNOR) operation scheme based on cascaded AlGaAs microring resonators. Phase control in this scheme depends on cross-phase modulation in the AlGaAs microring. The realization of NOT logic depends on the π phase shift of light transmission, and this π phase shift can be naturally obtained in microring resonators in the under-coupled state. Inputting a non-return zero intensity signal as pump light, the probe light (continuous wave) will experience a different phase shift and a phase-based logical function can be realized in this process. The bandwidth and the minimum power requirement of this scheme are also discussed in detail.View full textDownload full textKeywordslogic gate, AlGaAs, microring resonator, cross-phase modulation, all-optical signal processingRelated var addthis_config = { ui_cobrand: "Taylor & Francis Online", services_compact: "citeulike,netvibes,twitter,technorati,delicious,linkedin,facebook,stumbleupon,digg,google,more", pubid: "ra-4dff56cd6bb1830b" }; Add to shortlist Link Permalink http://dx.doi.org/10.1080/09500340.2012.668568