INESC Porto, Rua do Campo Alegre, 687, 4169-007 Porto, Portugal.
Opt Lett. 2009 Aug 15;34(16):2474-6. doi: 10.1364/ol.34.002474.
A micrometric Fabry-Perot refractometer based on an end-of-fiber polymer tip is proposed. The fiber tip, with a length of 36 mum, was fabricated by self-guiding photopolymerization. The two-wave interferometric operation was achieved by combining the light waves generated at the interface between the single-mode fiber and the polymer tip, and at the fiber tip end (Fresnel reflection). The Fabry-Perot interferometer is coherence addressed and heterodyne interrogated, resulting into a liquid refractive index resolution of approximately 7.5x10(-4).
提出了一种基于光纤末端聚合物尖端的微尺寸法布里-珀罗折射仪。光纤尖端长 36μm，由自导光聚合制成。两波干涉操作通过组合单模光纤与聚合物尖端界面处产生的光波以及光纤尖端末端（菲涅尔反射）产生的光波来实现。法布里-珀罗干涉仪采用相干寻址和外差探测，导致液体折射率分辨率约为 7.5x10(-4)。
