Optical refractometer based on an asymmetrical twin-core fiber Michelson interferometer
Optical refractometer based on an asymmetrical twin-core fiber Michelson interferometer
复制标题
基于非对称双芯光纤迈克尔逊干涉仪的光学折射仪
DOI：
10.1364/ol.36.003221
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发表时间：
2011-08-15
期刊：
影响因子：
3.6
通讯作者：
Yuan, Libo
中科院分区：
文献类型：
--
作者：
Zhou, Ai;Zhang, Yanhui;Yuan, Libo
我们报道并演示了一种基于紧凑型光纤迈克尔逊干涉仪的光学折射率计。迈克尔逊干涉仪由一根不对称的双芯光纤组成，其中包括一个中心芯和一个侧芯。通过化学刻蚀一段双芯光纤直到侧芯裸露，刻蚀区域侧芯的有效折射率对环境折射率敏感，从而导致迈克尔逊干涉仪的透射谱发生漂移。实验结果表明，在1.34-1.37的范围内，该器件的折射率分辨率大于800 nm/折射率单位。(C)2011年美国光学学会
We report and demonstrate an optical refractometer based on a compact fiber Michelson interferometer. The Michelson interferometer is composed of an asymmetrical twin-core fiber containing a central core and a side core. By chemically etching a segment of the twin-core fiber until the side core is exposed, the effective index of the side core in the etched region is sensitive to the environmental refractive index, which leads to a shift of the transmission spectrum of the Michelson interferometer. The experimental results show that such a device has a refractive index resolution of more than 800nm/refractive index unit in the range of 1.34-1.37. (C) 2011 Optical Society of America