Ultra-low power consumption tunable photonic crystal nanobeam cavity based on suspended ridge waveguides

Abstract

We present the design of an ultra-low power consumption tunable photonic crystal (PhC) nanobeam cavity. The simulated temperature dependence of the PhC cavity is about 79 pm/K, due to the high thermo-optic coefficient of silicon. And the calculated tuning efficiency of the tunable PhC cavity is 45.8 pm/μW, which is the highest efficiency ever reported.