摘要
通过在单模光纤后依次熔接一段大芯径空芯光纤和一段小芯径空芯光纤,制作了一种由小芯径空芯光纤形成环形反射面的全光纤法-珀腔。由于这种环形反射面结构的中间通孔适合气体或低粘度液体进出,因此可将其应用于气体或低粘度液体的折射率测量。分析了这种结构形成光纤法-珀腔的机理,并实验研究了这种基于环形反射面的干涉式折射率传感器,得到了这种传感器用于折射率测量时的分辨率约为1.652×10-6。可以预见这种具有环形反射面的法-珀干涉式折射率传感器在有毒、易燃、易爆的气体以及低粘度液体的折射率或含量检测中具有极大的潜在应用价值。
All-fiber Fabry-Pérot based on ring reflector structure is fabricated by orderly splicing two section of hollow fibers with different core diameters to the light induced single-mode fiber.As the small hole in the ring surface is easy for gas or liquid in and out the cavity,it is useful in detecting the refractive index of gas and liquid.The forming theory of the fiberoptic Fabry-Pérot cavity is analyzed,and the refractive index sensor base on ring reflector is studied by experiments.A resolution of the refractive index 1.652×10^-6 is obtained in a measuring refractive index experiment.It can be anticipated that the Fabry-Pérot refractive index sensors with ring reflector will have important applications in the fields of the toxic,flammable,explosive gases and low viscosity liquid refractive index or content detection.
出处
《光学学报》
EI
CAS
CSCD
北大核心
2010年第6期1608-1612,共5页
Acta Optica Sinica
基金
国家自然科学基金(60807019)
重庆市自然科学基金(CSTC2008BB2165)
新世纪优秀人才支持计划(NCET-08-0602)资助课题
