Chinese Optics Letters, 2014, 12 (1): 010602, Published Online: Jan. 10, 2014
Optical f iber sensor based on the short-range surface plasmon polariton mode Download: 750次
Abstract
An optical fiber sensor for ultrathin layer sensing based on short-range surface plasmon polariton (SRSPP) is proposed, and the sensing characteristics are theoretically analyzed. Simulation results indicate that even for a detecting layer much thinner than the vacuum wavelength, a resolution as high as 3.7\times 10-6 RIU can be obtained. Moreover, an average thickness-detection sensitivity of 6.2 dB/nm is obtained, which enables the sensor to detect the thickness variation of the ultrathin layer up to tens of nanometers. The sensitive region of thickness could be adjusted by tuning the structure parameters.
Xiaoyan Wang, Fang Liu, Ao Liu, Boyu Fan, Kaiyu Cui, Xue Feng, Wei Zhang, Yidong Huang. Optical f iber sensor based on the short-range surface plasmon polariton mode[J]. Chinese Optics Letters, 2014, 12(1): 010602.