Avoided-crossing-based ultrasensitive photonic crystal fiber refractive index sensor
Avoided-crossing-based ultrasensitive photonic crystal fiber refractive index sensor
复制标题
基于避免交叉的超灵敏光子晶体光纤折射率传感器
DOI：
10.1364/ol.35.002061
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发表时间：
2010-06-15
期刊：
影响因子：
3.6
通讯作者：
Liu, Bo
中科院分区：
文献类型：
--
作者：
Han, Tingting;Liu, Yan-ge;Liu, Bo
提出并实现了一种超灵敏光子晶体光纤折射率传感器，该传感器通过在可控流体填充光子带隙光纤（FF-PBGF）中引入避免交叉效应实现。通过控制FF-PBGF的弯曲半径，实现了芯模和包层模的谐振耦合，并在FF-PBGF的传输带内观察到传输陷波。通过改变弯曲的FF-PBGF的折射率或温度，实现了每折射率单位32,400 nm（或13.1 nm/℃）的灵敏度，据我们所知，这是迄今为止光纤器件的最高灵敏度。(C)2010年美国光学学会
We propose and demonstrate an ultrasensitive photonic crystal fiber refractive index sensor by introducing the avoided-crossing effect in a bent-controlled fluid-filled photonic-bandgap fiber (FF-PBGF). By controlling the bend radius of the FF-PBGF, resonant couplings between the fundamental core mode and the cladding modes are realized and transmission notches are observed in the transmission band of the FF-PBGF. By changing the refractive index or temperature of the bent FF-PBGF, a sensitivity of 32,400 nm per refractive index unit (or 13.1 nm/degrees C) is achieved, which is the highest for a fiber device to date, to our best knowledge. (C) 2010 Optical Society of America