Investigation of polyimide coated fibre Bragg gratings for relative humidity sensing

被引：30
|
作者：
Swanson, A. J. [1 ,2 ]
Raymond, S. G. [1 ]
Janssens, S. [1 ]
Breukers, R. D. [1 ]
Bhuiyan, M. D. H. [1 ]
Lovell-Smith, J. W. [1 ]
Waterland, M. R. [2 ]
机构：
[1] Callaghan Innovat, Lower Hutt 5040, New Zealand
[2] Massey Univ, Inst Fundamental Sci, Palmerston North 4442, New Zealand
来源：
MEASUREMENT SCIENCE AND TECHNOLOGY | 2015年 / 26卷 / 12期
关键词：
Bragg grating; humidity sensor; polyimide coating; time response; SENSOR;
D O I：
10.1088/0957-0233/26/12/125101
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
This paper reports the development of a polyimide coated fibre Bragg grating for relative humidity sensing. The humidity response was measured for several polyimide coatings including P84 and P84 HT. The P84 HT polyimide coating proved the most promising with a large coefficient of moisture expansion measured at 73.8 ppm/% rh. The effect of coating thickness and optical fibre diameter were also investigated.
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页数：9
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