Novel data processing techniques for dispersive white light interferometer

被引：134

作者：

Qi, B ^{[1
]}

Pickrell, GR ^{[1
]}

Xu, JC ^{[1
]}

Zhang, P ^{[1
]}

Duan, YH ^{[1
]}

Peng, W ^{[1
]}

Huang, ZY ^{[1
]}

Huo, W ^{[1
]}

Xiao, H ^{[1
]}

May, RG ^{[1
]}

Wang, A ^{[1
]}

机构：

[1] Virginia Polytech Inst & State Univ, Bradley Dept Elect & Comp Engn, Ctr Photon Technol, Blacksburg, VA 24061 USA

来源：

OPTICAL ENGINEERING | 2003年 / 42卷 / 11期

关键词：

white light interferometer; fiber optic sensor; temperature compensation;

D O I：

10.1117/1.1613958

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

White light interferometry has been used in the sensing area for many years. A novel data processing method for demodulating the information from the interference spectrum of a white light system is presented. Compared with traditional algorithms, both high-resolution and large dynamic range have been achieved with a relatively low-cost system. Details of this arithmetic are discussed. A compact white light interferometric system employing this algorithm has been developed, combined with fiber Fabry-Perot sensors. A +/-0.5-nm stability over 48 hours with a dynamic range on the order of tens of microns has been achieved with this system. The temperature dependence of this system has been analyzed, and a self-compensating data processing approach is adopted. Experimental results demonstrated a +/-1.5-nm shift in the temperature range of 10 to 45degreesC. (C) 2003 Society of Photo-Optical Instrumentation Engineers.

引用

页码：3165 / 3171

页数：7

共 12 条

[1] Extended-range, low coherence dual wavelength interferometry using a superfluorescent fibre source and chirped fibre Bragg gratings [J].