Experimental performance evaluation of analog signal transmission in a silicon microring resonator

We experimentally evaluate the performance of analog signal transmission in a silicon microring resonator. The spurious free dynamic range (SFDR) of the second-order harmonic distortion (SHD) and third-order harmonic distortion (THD) is used to assess the analog link. The performance dependence on the input signal wavelength and input signal power is comprehensively studied. The obtained results indicate that the analog signal transmission performance through microring resonator is mainly affected by the notch filtering effect for low-level input signal power. Moreover, with the increase of input signal power, the enhanced nonlinear resonance in the microring resonator could cause the shift of the resonance wavelength, which might also impact on the analog signal transmission performance.