Transient response and applications of microring resonator-coupled Mach-Zehnder interferometer

Transient response of optical pulse is investigated theoretically and numerically on microring resonator-coupled Mach-Zehnder interferometer. The analytical formulations of optical pulse process are derived by the method of light beam tracing, and transmission evolvement with time is numerically demonstrated. Based on transient response, optical differentiation, integration, pulse compression and trigger pulse generation can be realized. Transmitted pulse shape can be adjusted by controlling loss. Response speed is about picosecond order. Pulse differentiation and integration can be synchronously achieved at output ports, respectively, due to the complementarity between two ports. Conversion of differentiation and integration can be also realized at one channel by controlling loss. By introducing gain to compensate loss, pulse compression and single trigger pulse generation can be obtained.