Research On Coupled-Resonator-Induced Transparency Effect Based On Silicon Microring

With the requirements of the capacity and speed of information, the traditional technology of microelectronics can not satisfy people's need for the limitation of objective factors. Silicon based optoelectronics combined the technology of microelectronics with optoelectronic technology to maximum its advantage, which draws great attention in recent years. Based on its own advantages, microring resonator plays an important role in silicon based optoelectronics. Transparency effect which has been achieved through the structure of microring resonator(MRR) has already been a hot topic, because it can control speed of light and then delay and store the light.This thesis firstly illustrates the current situation of silicon based optoelectronics and coupled-resonator-induced transparency(CRIT). Based on the research of waveguide coupling theory and the principle of MRR, this thesis focuses on the thoughts and methods of previous research in CRIT of series connected microring resonators and analyzes transparency effect of parallel MRRs by comparison. Second, by studying transmission characteristics of self-coupled optical waveguides(SCOW) and combining the transmission characteristics of MRR, this thesis puts up with a new structure, self-coupled optical waveguides microring resonator, which can achieve transparency effect, and makes an analysis of the transmission characteristics of the new structure and the influence of every parameter in transparency effect.This thesis gives the expression of transfer function of bend waveguide coupling by using transfer matrix method and simulates the influence of every parameter in transparency effect through Matlab software. The results show that in parallel MRRs structure, the increase in coupling coefficient K, the decrease in transmission coefficient a and the increase in the space L between two rings will decrease transparency effect; the increase in microring radius R does not make any obvious changes in transparency effect, but there are some changes in resonant wavelength. In new structure, because of the difference of output terminal, the decrease in the coupling coefficient K decrease the transparency effect; the decrease in the transmission coefficient a can also decrease the transparency effect like in parallel, which is because the decrease in transmission coefficient means the increase in wastage. However, the increase in wastage will definitely decrease the effects of transparency effect. The increase in microring radius R can not make any change in transparency effect, but it has some changes in resonant wavelength whose changing direction is different from that in parallel for the sake of the difference of output terminal. These studies will give some suggestions on the device design of transparency effect based on MRR, avoid the blindness in designing and optimizing device and shorten the period.