Modeling of the dynamic transmission properties of chalcogenide ring resonators in the presence of fast and slow nonlinearities.
We propose a simple iterative method for calculating the dynamic behavior of ring resonators with fast and slow (cumulative) optical nonlinearities when an optical pulse with an arbitrary-shaped envelope is incident into them. In the case of a slow nonlinearity, the nonlinear phase shift and nonlinear absorption are temporally-integrated over the incident pulse. In this paper, we consider two types of single-ring resonators made out of As2Se3 chalcogenide glass with high nonlinearity and investigate the dynamic properties (especially the effect of the cumulative nonlinearity on optical bistability) using known nonlinear material parameters. It is found that the cumulative nonlinearity suppresses overshoot and ringing after switching, decreases the width of the hysteresis loop between the input and output powers, and shifts its center corresponding to the operating point. The obtained results are useful in developing chalcogenide-based bistable optical devices and the proposed approach is applicable to modeling of a variety of nonlinear optical devices.
Graduate School of Science and Technology, Shizuoka University, Hamamatsu, Japan. tekogus@ipc.shizuoka.ac.jp
Kazuhiko
K
Ogusu
Yosuke
Y
Oda
D018011:Chalcogens / Q000737:chemistry*; D017076:Computer-Aided Design; D004867:Equipment Design; D019544:Equipment Failure Analysis; D008027:Light; D017711:Nonlinear Dynamics; D012031:Refractometry / Q000295:instrumentation*; D012542:Scattering, Radiation
D018011:Chalcogens