Optics and Precision EngineeringVol. 14, Issue 5, Pages: 771-774(2006)
作者机构:
1. 北京邮电大学 电子工程学院 光通信与光波技术教育部重点实验室 北京,100876
2. 马哈那空科技大学 通信工程系 曼谷,泰国,10530
3. 北京机械工业学院 电子信息工程系 北京,100085
作者简介:
基金信息:
DOI:
CLC:TN253;TP212.2
Received:21 March 2006,
Revised:18 July 2006,
Published Online:30 October 2006,
Published:30 October 2006
稿件说明:
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SANG Xin-zhu, YU Chong-xiu, YAN Bin-bin, et al. Chemical sensor based on a fiber Bragg grating[J]. Optics and precision engineering, 2006, 14(5): 771-774.
DOI:
SANG Xin-zhu, YU Chong-xiu, YAN Bin-bin, et al. Chemical sensor based on a fiber Bragg grating[J]. Optics and precision engineering, 2006, 14(5): 771-774.DOI:
Bragg wavelength sensitivity to the refractive index of the ambient media can be realized by etching out the cladding of fiber Bragg grating. A fiber Bragg grating with the diameter of 6 μm is abtained through hydrofluoric (HF) acid etching. Bragg wavelength sensitivity to chemical solutions is experimentally investigated. With an optical spectrum analyzer to detect the wavelength shift
the concentration resolutions of propylene glycol solutions are 0.7% and 0.32% at low and high concentrations
respectively. For sugar solutions
concentration resolutions are 0.55% and 0.1% respectively. In addition
the concentration resolutions can be improved an order of magnitude with wavelength interrogation module of 1 pm resolution.