Fiber optic Bragg grating sensor based on hydrogels for measuring salinity
Fiber optic Bragg grating sensor based on hydrogels for measuring salinity
复制标题
基于水凝胶的光纤布拉格光栅传感器用于测量盐度
DOI：
10.1016/s0925-4005(02)00289-7
复制
发表时间：
2002-12-20
影响因子：
8.4
通讯作者：
Xu, J
中科院分区：
文献类型：
--
作者：
Cong, J;Zhang, XM;Xu, J
本文报道了一种新型的水凝胶包覆光纤布拉格光栅（FBG）的光学盐度传感器。该装置中的传感机制是基于当水从化学敏感的水膨胀聚合物（水凝胶）涂层中逸出时产生的机械应力。水凝胶涂层中的应力拉伸并移动光纤光栅的布拉格波长。改变凝胶的组成，传感器可以用来响应不同的触发刺激。这里演示了用于测量盐度的传感器。(C) 2002 Elsevier Science B.V.版权所有
We report a new type of optical salinity sensor with a fiber Bragg grating (FBG) coated with hydrogels. The sensing mechanism in this device is based on mechanical stress that is induced in the chemically sensitive water swellable polymers (hydrogels) coating when the water escapes from it. The stress in the hydrogels coating stretches and shifts the Bragg wavelength of the FBG. Varying the composition of the gel, the sensor can be used to response to different trigger stimulus. Here the sensors for measuring salinity are demonstrated. (C) 2002 Elsevier Science B.V. All rights reserved.