Abstract
We present transient time analysis of a two-turn optical microfiber coil resonator (MCR). Our dynamic model is based on two sets of equations, coupled mode and nonlinear Schrödinger equations. The pulse response of this device is obtained by numerically solving the modified sets of equations in a dynamic regime. The results show that if the input pulse of the MCR is set at an off-resonance wavelength, this resonator operates as an all-pass filter with neither loss nor time delay. But in the case of resonance, the output pulse may have loss and a relatively long time delay, according to the continuous rotation of light between the first and the second turns of the MCR. Tunable time delays up to td=320 ps are obtained by choosing different values of the coupling coefficients. Furthermore, the material and structural dispersions of the MCR are studied, and it is shown that strong dispersive effects can occur even in this millimeter dimensions photonic device. Pulse broadening and distortion effects of the MCR are studied in the dynamic regime. The results show that, for high bit rate applications, the dispersion effects of the MCR should be carefully considered. Finally, fundamental soliton solution and its conditions in the MCR are investigated.
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