Design of new type adiabatic micro-ring harmonic cavity low-power silicon modulator

For the purpose of improving the structure of adiabatic micro-ring resonator and reducing the resonator cavity loss, a new carrier injection/extraction structure was proposed based on adiabatic transition curve. After theoretical analysis and experimental verification, the data of resonant full wave at half maximum(FWHM) of the adiabatic micro-ring resonator, extinction ratio and frequency response parameters were obtained and compared with the loss of a traditional micro-ring resonator. The results show that FWHM of the adiabatic ring with outer radius of 2m is only 29.5% of that of a traditional micro-ring, the constrained bandwidth of resistance and capacitance increases 4 times, extinction ratio is 13.5dB and energy consumption is 5.1fJ/bit under modulation speed of 10Gbit/s. This research is helpful to improve the frequency response and reduce the power consumption of an adiabatic micro-ring resonator significantly. The study on adiabatic transition and carrier injection/extraction structure can further improve the performance of the adiabatic micro-ring, and push the development of low energy consumption research.