物理学报2017，Vol.66Issue(7)：104-110,7.DOI:10.7498/aps.66.074202
基于全相位滤波技术的光纤表面等离子体共振传感解调算法
Optical fiber SPR sensing demodulation algorithm based on all-phase filters
摘要
Abstract
Aiming at the urgent requirements for refractive index detection in the biological sample detection area,an all-fiber surface plasmon resonance (SPR) system is established in this paper.And the SPR characteristic wavelength demodulation algorithm is proposed for this system based on all-phase filter technique.According to the system simulation,the refractive index sensing sensitivity of the fiber SPR sensor can be calculated theoretically.By using the all-phase filter technique,the characteristic wavelength of the fiber SPR sensor can be extracted,and the theoretically analytical expression of the all-phase filter can be obtained.The experimental results show that the refractive index sensing sensitivity and the detection resolution of the fiber SPR sensor are 1640.4 nm/RIU and 7.36 × 10-4 RIU respectively by using this algorithm.Compared with the traditional methods,our algorithm can improve the detection precision and the anti-light-disturbance performance and reduce the costs as well.关键词
光纤SPR传感器/全相位滤波/解调算法/生物传感Key words
fiber surface plasmon resonance sensor/all-phase filter/demodulation algorithm/biological sensing引用本文复制引用
曹玉珍,马金英,刘琨,黄翔东,江俊峰,王涛,薛萌,刘铁根..基于全相位滤波技术的光纤表面等离子体共振传感解调算法[J].物理学报,2017,66(7):104-110,7.基金项目
国家自然科学基金(批准号:61475114,61227011)和国家重大科学仪器设备开发专项(批准号:2013YQ030915)资助的课题.Project supported by the National Natural Science Foundation of China (Grant Nos.61475114.61227011),and the National Instrument Program,China (Grant No.2013YQ030915). （批准号:61475114,61227011）
