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论文类型： 期刊论文

发表时间： 2013-04-22

发表刊物： APPLIED PHYSICS LETTERS

收录刊物： SCIE、EI、Scopus

卷号： 102

期号： 16

ISSN号： 0003-6951

摘要： A silicon-on-insulator based optofluidic biosensor with integrated dual-channel Fabry-Perot cavity is proposed for optical differential detection. A detection limit of 5.5 x 10(-8) refractive index unit is experimentally demonstrated, owing to the high quality factor of the cavity and the differential detection, which can extract the small signal for efficient amplification and greatly reduce the system noise. Moreover, the measurement system features low cost compared with that of surface-plasmon-resonance sensor and ring-resonator sensor. (C) 2013 AIP Publishing LLC [http://dx.doi.org/10.1063/1.4802805]