A channel-selectable optical link based on a silicon microring resonator is proposed and demonstrated.This optical link consists of the wavelength-tunable microring modulators and the filters,defined on a silicon-on-insulator (SOI) platform.With a p-i-n junction embedded in the microring modulator,light at the resonant wavelength of the ring resonator is modulated.The 2nd-order microring add-drop filter routes the modulated light.The channel selectivity is demonstrated by heating the microrings.With a thermal tuning efficiency of 5.9mW/nm,the filter drop port response was successfully tuned with 0.8nm channel spacing.We also show that modulation can be achieved in these channels.This device aims to offer flexibility and increase the bandwidth usage efficiency in optical interconnection.