An optical fiber high-precision absolute distance measurement technology incorporating white-light interferometry and single-wavelength interferometry

IF 2.6 3区计算机科学 Q2 ENGINEERING, ELECTRICAL & ELECTRONIC

Optical Fiber Technology Pub Date : 2024-12-31 DOI:10.1016/j.yofte.2024.104115

Jinxu Jia, Fang Xie, Sitong Bao

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引用次数: 0

Abstract

An optical fiber high-precision absolute distance measurement technology that incorporates white-light interferometry and single-wavelength interferometry is presented, which is suitable for measuring static or quasi-static local absolute distance as well as remote absolute distance. The sensing head which is a grin lens and is connected to an optical fiber Michelson interferometer with optical fiber can be installed conveniently in the sensing field to sense the measured absolute distance. The optical fiber Michelson interferometer is used to demodulate the optical path. The white light interferometric signal of the Michelson interferometer is used to determine the amplitude of the absolute distance, while the value of the absolute distance is measured precisely with a single wavelength interferometric signal which is obtained with a fiber Bragg grating reflecting a single wavelength from the white light interferometric signal. The measurement resolution that is determined by the single wavelength interferometry is less than 1 nm. And the measurement range that is determined by the coherent length of the light reflected by the fiber Bragg grating is about 12 mm. The linear correlation coefficient of the experimental results of absolute distance measurement is 0.999 which indicates that the linearity of the measurement system is very good.

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来源期刊

Optical Fiber Technology 工程技术-电信学

CiteScore

4.80

自引率

11.10%

发文量

327

审稿时长

63 days

期刊介绍： Innovations in optical fiber technology are revolutionizing world communications. Newly developed fiber amplifiers allow for direct transmission of high-speed signals over transcontinental distances without the need for electronic regeneration. Optical fibers find new applications in data processing. The impact of fiber materials, devices, and systems on communications in the coming decades will create an abundance of primary literature and the need for up-to-date reviews. Optical Fiber Technology: Materials, Devices, and Systems is a new cutting-edge journal designed to fill a need in this rapidly evolving field for speedy publication of regular length papers. Both theoretical and experimental papers on fiber materials, devices, and system performance evaluation and measurements are eligible, with emphasis on practical applications.