摘要
采用有限元法模拟微结构光纤表面等离子体共振传感器.计算其共振波长和强度,为证实表面等离子体共振的产生,对比不同位置处传导模的分布.环形大孔中液体样品的折射率提高后,共振波长向长波移动,且共振峰值强度增大.该微结构光纤表面等离子体传感器对折射率变化的灵敏度达到10-4.
Microstructured-optical-fiber(MOF)surface-plasmon-resonance(SPR)sensor was theoretically investigated via finite element method.The resonance wavelength and SPR amplitude were calculated.The comparation of field mode distribution at different wavelengths confirmed the occurrence of SPR.As the refractive index of the liquid measured in large ring holes increases,the SPR peak increases and shifts to long wavelength.This MOF-SPR senor has a ～10-4 sensitivity as the refractive index changes.
出处
《深圳大学学报（理工版）》
EI
CAS
北大核心
2009年第1期16-19,共4页
Journal of Shenzhen University(Science and Engineering)
基金
国家自然科学基金资助项目(60777036)
深圳市科技计划资助项目(200718)
关键词
表面等离子体共振
微结构光纤
传感器
折射率
共振波长
surface-plasmon-resonance（SPR）
microstructured-optical-fiber（MOF）
sensor
refractive index
resonance wavelength
