Abstract
By using a 2-D finite difference time domain and transfer matrix method, we have theoretically and numerically analyzed the optical transmission characteristics of optical waveguide coupling to ring cavity array. The simulation results reveal that the dual-ring cavity waveguide configuration with Kerr nonlinear material can act as a double channel all-optical switch. The contrast ratio of the two switch channels is 16.6dB and 10.37dB, respectively. We also designed a bidirectional all-optical switch based on two parallel waveguides coupled to ring cavity structure. In addition, multi-channel optical switches are achieved by increasing the number of cavity. The designed all optical switching models will be helpful to dynamic control of light in photonic circuits.
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