A novel structure of liquid-crystal-based tunable photonic crystal resonators is presented in this paper.Simulation and calculation are conducted by using FDTD algorithm-based Fullwave software
obtaining the resonant frequencies and quality factors in the resonators in different refractive indexes of the liquid crystal.The results show that 6 resonant frequencies are produced in the tubing with a tunable range of 31.937 nm
4 of which have good lasing qualities and the highest quality factor is about 60 000 and the lowest one about 2 000.It can be seen that this kind of resonators are characteristic of large tuning range and high quality factors