Abstract
The effects of surface roughness on the light transmission properties and sensitivity of fiber-optic evanescent wave sensors are investigated. A simple method of increasing the sensitivity based on the surface roughness (pit depth and diameter ) and incident angle of light rays on the fiber input end is proposed. We discovered that as increases, the transmitted light intensity decreases, but the sensitivity initially increases and then decreases. In sensors containing fibers of various roughnesses, the sensitivity to glucose solutions reached at and increased further to with proper adjustment of .
© 2013 Optical Society of America
Full Article | PDF ArticleMore Like This
Nianbing Zhong, Qiang Liao, Xun Zhu, Yongzhong Wang, and Rong Chen
Appl. Opt. 52(7) 1432-1440 (2013)
Nianbing Zhong, Mingfu Zhao, Qiang Liao, Xun Zhu, Yishan Li, and Zhonggang Xiong
Opt. Express 24(12) 13394-13409 (2016)
Jun Lou, Hong-zhi Xu, Ben Xu, Jie Huang, Ben-chong Li, and Wei-min Shen
Appl. Opt. 53(19) 4200-4205 (2014)