Photonic Sensors, Volume. 7, Issue 2, 105(2017)
Numerical Investigation Into a Surface Plasmon Resonance Sensor Based on Optical Fiber Microring
A reflective surface plasmon resonance (SPR) sensor based on optical fiber microring is proposed. In such a sensor, plasmons on the outer surface of the metallized channels containing analyte can be excited by a fundamental mode of a thin-core fiber (TCF). The refractive index (RI) sensing can be achieved as the surface plasmons are sensitive to changes in the refrective index of the analyte. Numerical simulation results show that the resonance spectrum shifts toward the shorter wavelength gradually when the analyte refractive index increases from 1.0 to 1.33, whereas it shifts toward the longer wavelength gradually when the analyte refractive index increases from 1.33 to 1.43, and there is a turning point at the refractive index value of 1.33. The highest sensitivity achieved is up to 2.30×103nm/RIU near the refractive index value of 1.0. Such a compact sensor has potential for gaseous substance monitoring.
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Chunliu ZHAO, Yanru WAN, Dongning WAN, Zhewen DIN. Numerical Investigation Into a Surface Plasmon Resonance Sensor Based on Optical Fiber Microring[J]. Photonic Sensors, 2017, 7(2): 105
Category: Regular
Received: Jun. 15, 2016
Accepted: Nov. 12, 2016
Published Online: May. 9, 2017
The Author Email: ZHAO Chunliu (clzhao@cjlu.edu.cn)