[20p-E205-1~12] 3.8 Optical measurement, instrumentation, and sensor

▲ [20p-E205-1] Highly Sensitive Microfiber-Based Surface Plasmon Resonance Sensor

〇(M2)yuansong zhan¹, Jianhui Yu^1,2, Zhe Chen^1,2 (1.Key Laboratory of Optoelectronic Information and Sensing Technologies of Guangdong Higher Educational Institutes, Jinan University, Guangzhou 510632, China, 2.Department of Optoelectronic Engineering, Jinan University, Guangzhou 510632, China)

Keywords:Sensitivity, gold nanowires, microfiber

A novel refractive index (RI) sensor based on microfiber (MF) coated with gold nanowires has been proposed and theoretically investigated. Comparing with gold film, the gold nanowires can significantly improve the performance of the MF sensor. The influences of the diameters of gold nanowire and microfiber on the sensing properties are investigated. For analyte RI n_s =1.33, the maximum sensitivity of 5200nm/RIU (D_MF = 3μm, D_wire = 120nm) and the maximum figure of merit (FOM) of 150.38RIU^-1(D_MF = 9μm, D_wire = 30nm) can be achieved.