Chinese Optics Letters, 2008, 6 (12): 916, Published Online: Dec. 17, 2008
Optical cavity coupled surface plasmon resonance sensing for enhanced sensitivity Download: 603次
表面等离子体共振 光谐振腔 光纤激光器 角度扫描 240.6680 Surface plasmons 250.5403 Plasmonics 060.3510 Lasers, fiber 280.1415 Biological sensing and sensors
Abstract
A surface plasmon resonance (SPR) sensing system based on the optical cavity enhanced detection technique is experimentally demonstrated. A fiber-optic laser cavity is built with a SPR sensor inside. By measuring the laser output power when the cavity is biased near the threshold point, the sensitivity, defined as the dependence of the output optical intensity on the sample variations, can be increased by about one order of magnitude compared to that of the SPR sensor alone under the intensity interrogation scheme. This could facilitate ultra-high sensitivity SPR biosensing applications. Further system miniaturization is possible by using integrated optical components and waveguide SPR sensors.
Zheng Zheng, Xin Zhao, Jinsong Zhu, Jim Diamond. Optical cavity coupled surface plasmon resonance sensing for enhanced sensitivity[J]. Chinese Optics Letters, 2008, 6(12): 916.