10-m-range absolute measurement of fiber interference

Ming Zhong; Fajie Duan; Bei Yang; Yuyang Sun; Shenghua Ye

doi:10.1117/12.482019

9 September 2002 10-m-range absolute measurement of fiber interference

Ming Zhong, Fajie Duan, Bei Yang, Yuyang Sun, Shenghua Ye

Proceedings Volume 4920, Advanced Sensor Systems and Applications; (2002) https://doi.org/10.1117/12.482019
Event: Photonics Asia, 2002, Shanghai, China

Abstract

This paper presents a large range, high accuracy measuring method on base of quasi-light fiber interference technology. The system consists of quasi-light fiber locating interferometer and scanning interferometer. The light source of the locating interferometer adopts LD whose light spectrum has been widened by current injection. The locating interferometer has several fiber groups that have different light difference. Furthermore, several fibers are placed in the interference light path to multiply the measuring range two times. Therefore, the system can fulfill large range measurement (more than lOm) only using short guide (200mm). Moreover, the system sets up a zero position fiber group to fix an absolute zero position and fulfills the criterion transfer using light wavelength. The experimental results illustrate that the measuring accuracy is ±2?m and the repetition accuracy is better than 10-5. This paper demonstrates the basic principle of this method, introduces how to achieve the absolute zero position and the multiplication of the measuring range and at last, gives the corresponding experiment data.

Citation Download Citation

Ming Zhong, Fajie Duan, Bei Yang, Yuyang Sun, and Shenghua Ye "10-m-range absolute measurement of fiber interference", Proc. SPIE 4920, Advanced Sensor Systems and Applications, (9 September 2002); https://doi.org/10.1117/12.482019

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