Analytical Study of Optical Bi-Stability of a Single-Bus Resonator Based on InGaAs Micro-Ring Array

journal of Artificial Intelligence in Electrical Engineering

مقاله 8، دوره 2، شماره 8، خرداد 2014، صفحه 79-92   

چکیده

In this paper, for the first time to our knowledge, we investigate the optical bi-stability in a compact parallel array of micro- ring resonators with 5μm radius, induced by optical nonlinearity. Due to the nature of perfect light confinement, resonance and accumulation process in a ring resonator, optical nonlinear effects, even at small optical power of a few milliwatts in this structure are observable. Different optical applications such as: all-optical switching, memory, logic gates and modulators, due to optical bi-stability in a ring resonator are possible. By using of compound semiconductors, instead of silicon that have weakly nonlinear optical properties, we improve the performance of ring-resonator based devices. Also by using of a polymer cladding layer with negative thermo-optic coefficient, we have eliminate the temperature created nonlinearity which is a very slow process, so the switching speed of a few MHz increases to several tens of GHz. With plotting the transfer function of the resonator, a hysteresis loop in a few milliwatts is observed, that by using of ring resonator array, although the bandwidth is reduced, but the width of the hysteresis loop and resolution between both steady state increases.

کلیدواژه‌ها

Optical Bi-stability؛ Nonlinear Optic؛ Ring Resonator Array؛ Resonance Wavelength؛ Hysteresis Loop

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