ABSTRACT
An optical soliton is recognized as a powerful laser pulse, whose optical bandwidth can be enlarged when it is propagating within the nonlinear microring resonator. Moreover, the superposition of selfphase modulation soliton pulses can keep the large output power. Initially, optimum energy is coupled into the waveguide by a large effective core-area device, i.e., ring resonator, as shown in Fig. 6.1. Then, a smaller one is connected to form the stopping behavior. The filtering characteristic of the optical signal is presented within a ring resonator, where the suitable parameters are controlled to obtain the required output energy. To maintain the soliton pulse propagating within the ring resonator, a suitable coupling power is required in the device, The interference signal is a minor effect compared to the loss associated to the direct passing through. A soliton pulse is introduced into the multistage nanoring resonators as shown in Fig. 6.1, the input optical field (Ein) of the bright soliton pulse is given by Eq. 6.1 [17].
