A real-time adaptive SOGI frequency multiplying technology for OFDR

Luwei Shuai; Lei Ye; Qing Ye

doi:10.1117/12.3048420

5 December 2024 A real-time adaptive SOGI frequency multiplying technology for OFDR

Luwei Shuai, Lei Ye, Qing Ye

Author Affiliations +

Proceedings Volume 13418, Fifteenth International Conference on Information Optics and Photonics (CIOP 2024); 134181H (2024) https://doi.org/10.1117/12.3048420
Event: 15th International Conference on Information Optics and Photonics (CIOP2024), 2024, Xi’an, China

Abstract

A real-time adaptive second order generalized integrator spreading technique suitable for OFDR is proposed to address the drawbacks of low spatial data utilization and complex phase extraction in the equal optical frequency sampling method. By using the discretized SOGI algorithm, the main components and orthogonal components of the original signal are obtained, and the signal phase is obtained through trigonometric calculation to achieve frequency multiplying. Using the phase signal after frequency multiplying for equal optical frequency sampling can improve the distance utilization of the auxiliary interferometer and be implemented on FPGA. Finally, it has been experimentally proven that this technology can break through the original detection distance without changing the optical path and achieving real-time performance of four frames per second. Realize a testing range of 300m with an auxiliary interferometer arm length difference of 150m and spatial resolution of 80μm.

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

Citation Download Citation

Luwei Shuai, Lei Ye, and Qing Ye "A real-time adaptive SOGI frequency multiplying technology for OFDR", Proc. SPIE 13418, Fifteenth International Conference on Information Optics and Photonics (CIOP 2024), 134181H (5 December 2024); https://doi.org/10.1117/12.3048420

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