Fundamental Research Funds for the Central Universities of Central South University [72150050429]; National Natural Science Foundation of ChinaNational Natural Science Foundation of China (NSFC) [61275174]
机构署名：
本校为其他机构
院系归属：
信息与电子工程学院
摘要：
Sensing characteristics based on Fano resonance in a rectangular ring resonator with a stub are investigated numerically. Simulation results show that a sharp and asymmetric Fano-line shape emerges in the proposed structure. Through tuning the width and length of the stub, it is found that the width and length play an important role in optimizing the sensing characteristic. Using the sharp and asymmetric Fano-line shape a highly sensitive plasmonic nanosensor with the sensitivity of 1000 nm/RIU and a tunable figure of merit (FOM) can be attained. The maximum FOM can reach up to 992,800 when th...
