Delay optical path with long fiber toward absolute distance measurement by optical balanced cross-correlation

Haoran Gao; Huining Zhao; Xin Xu; Pengxiang Ge; Dagui Wang; Qian Zhang; Lei Huang

doi:10.1117/12.3032566

13 September 2024 Delay optical path with long fiber toward absolute distance measurement by optical balanced cross-correlation

Haoran Gao, Huining Zhao, Xin Xu, Pengxiang Ge, Dagui Wang, Qian Zhang, Lei Huang

Author Affiliations +

Proceedings Volume 13178, Eleventh International Symposium on Precision Mechanical Measurements; 1317811 (2024) https://doi.org/10.1117/12.3032566
Event: Eleventh International Symposium on Precision Mechanical Measurements, 2023, Guangzhou, China

Abstract

A set of delay optical path device with long fiber of various lengths are developed. They are applied in the absolute distance measurement system based on the principle of optical balanced cross-correlation. Limited with the repetition rate scanning range of femtosecond laser, dead zone exists in the absolute distance measurement range via a femtosecond optical frequency comb. With the fixed scanning range of repetition rate, the measurement system introduced different length of long fiber can realize different space scanning distance and the resolution of corresponding space scanning distance are given. Meanwhile, the optical path fluctuation of delay optical path with different length is measured by optical balanced cross-correlation absolute distance measurement technology. From the results, it is possible to realize arbitrary absolute distance measurement.

(2024) Published by SPIE. Downloading of the abstract is permitted for personal use only.

Citation Download Citation

Haoran Gao, Huining Zhao, Xin Xu, Pengxiang Ge, Dagui Wang, Qian Zhang, and Lei Huang "Delay optical path with long fiber toward absolute distance measurement by optical balanced cross-correlation", Proc. SPIE 13178, Eleventh International Symposium on Precision Mechanical Measurements, 1317811 (13 September 2024); https://doi.org/10.1117/12.3032566

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