Title :
Ultra-Sensitive Refractive Index Sensor With Slightly Tapered Photonic Crystal Fiber
Author :
Li, Cheng ; Qiu, Sun-jie ; Chen, Ye ; Xu, Fei ; Lu, Yan-Qing
Author_Institution :
Nat. Lab. of Solid State Microstructures, Nanjing Univ., Nanjing, China
Abstract :
We fabricate a miniature ultra-sensitive refractive index sensor based on a tapered photonic crystal fiber (PCF) modal interferometer. The PCF is slightly tapered and a little elongated to keep the size compact. The total length is ~ 2 cm, and the potential sensitivity is more than 1600 nm/RIU (refractive index unit), which is nearly eight times as high as that of an untapered PCF interferometer.
Keywords :
fibre optic sensors; holey fibres; light interferometers; photonic crystals; modal interferometer; photonic crystal fiber; refractive index unit; ultra-sensitive refractive index sensor; Interference; Optical fiber sensors; Optical interferometry; Optimized production technology; Photonic crystal fibers; Refractive index; Sensitivity; Fiber sensor; fiber taper; photonic crystal fiber (PCF); ultra-sensitivity;
Journal_Title :
Photonics Technology Letters, IEEE
DOI :
10.1109/LPT.2012.2214379
