In-fiber Fabry-Perot refractometer assisted by a long-period grating
In-fiber Fabry-Perot refractometer assisted by a long-period grating
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DOI：
10.1364/ol.35.000613
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发表时间：
2010-02-15
期刊：
影响因子：
3.6
通讯作者：
Andres, M. V.
中科院分区：
文献类型：
--
作者：
Mosquera, L.;Saez-Rodriguez, D.;Andres, M. V.
我们提出了一种基于法布里-珀罗干涉仪的光纤折射计，该干涉仪由两个光纤布拉格光栅和一个内腔长周期光栅组成，该光栅使光被限制在谐振腔中与周围介质相互作用。外部折射率由法布里-珀罗干涉仪的谐振频率监测，该谐振频率可以在透射或反射中测量。在第一个实验中，以0.1 pm的分辨率测量的波长偏移允许建立2.1 x 10（-5）的折射率检测限。(C)2010年美国光学学会
We present an optical fiber refractometer based on a Fabry-Perot interferometer defined by two fiber Bragg gratings and an intracavity long-period grating that makes the light confined in the resonator interact with the surrounding medium. The external refractive index is monitored by the resonant frequencies of the Fabry-Perot interferometer, which can be measured either in transmission or in reflection. In this first experiment, wavelength shifts measured with a resolution of 0.1 pm have allowed one to establish a refractive index detection limit of 2.1 x 10(-5). (C) 2010 Optical Society of America