光谱域光纤白光干涉测量技术

光谱域光纤白光干涉测量技术(WLI)具有精度高、动态范围大、工程实用性强等优点,在光纤传感和精密测量领域有广泛的应用价值。本文回顾了光谱域光纤白光干涉测量技术的发展历程,重点介绍了本研究组在这一领域所开拓的基于相位测量技术的光谱域光纤WLI,包括傅里叶变换WLI及其相对测量术、波长扫描WLI、相移WLI、波数扫描WLI、互相关WLI、步进相移WLI,并展示了该技术在光纤温度、压力、应变等传感器中的应用。

Fiber Optical Spectral-Domain White-light Interferometry

Fiber optical spectral-domain white-light interferometry (WLI) has the advantages of high precision, large dynamic range and engineering practicability, and it has been found widely applications in fiber optical sensing and precision measurement. In this paper, we review the development of fiber optical spectral-domain white-light interferometry, and focus on our work about the fiber optical spectral-domain WLI based on phase measurement technology, including the Fourier transform WLI and relative measurement, wavelength scanning WLI, phase-shifted WLI, stepped phase-shifted WLI, wavenumber scanning WLI, and cross-correlation WLI. Applications of this technology in fiber optic temperature, pressure, and strain sensors are demonstrated.