| Secure and noise-free holographic encryption with a quick-response code简 |
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| 引用本文： | 任振波,苏萍,马建设,金国藩.Secure and noise-free holographic encryption with a quick-response code简[J].Chinese Optics Letters,2014(1):9-12. |
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| 作者姓名： | 任振波 苏萍 马建设 金国藩 |
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| 摘 要： | An optical fiber sensor for ultrathin layer sensing based o51 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 3.7×10-6 RIU can be obtained. Moreover, an average ttfickness-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.
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| 关 键 词： | 光纤传感器 表面等离激元 短程 元模式 检测灵敏度 基础 厚度变化 传感特性 |
Optical fiber sensor based on the short-range surface plasmon polariton mode |
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| Institution: | State Key Laboratory of Integrated Optoelectronics, Department of Electronic Engineering, Tsing~hua University, Beijing 100084, China |
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