Distance measurement based on SD-OCT using multi-mode fiber probe for light delivery and collection

Xiuming Li; Fajie Duan; Yong Yang; Weijiang Shen; Cong Zhang

doi:10.1117/12.2579834

5 November 2020 Distance measurement based on SD-OCT using multi-mode fiber probe for light delivery and collection

Xiuming Li, Fajie Duan, Yong Yang, Weijiang Shen, Cong Zhang

Proceedings Volume 11568, AOPC 2020: Optics Ultra Precision Manufacturing and Testing; 1156812 (2020) https://doi.org/10.1117/12.2579834
Event: Applied Optics and Photonics China (AOPC 2020), 2020, Beijing, China

Abstract

Spectral domain OCT (SD-OCT) is a branch of Fourier domain OCT (FD-OCT) technology. Thanks to the characteristics of high sensitivity, high precision and non-invasion, SD-OCT can be widely used in clinical medical diagnosis, industrial nondestructive testing and distance measurement. However, one of the main drawbacks of the SD-OCT is the poor light collection efficiency of the fiber probe because the conventional single-mode fiber probe for light collection has very small diameter. In this paper, the multi-mode fiber probe was used for optical delivery and collection, the feasibility of this method has been verified both theoretically and experimentally. Furthermore, the higher efficiency of the light collection was obtained when the multi-mode fiber probe was used in the system. It is especially suitable for small distance and uncooperative target distance measurement.

Citation Download Citation

Xiuming Li, Fajie Duan, Yong Yang, Weijiang Shen, and Cong Zhang "Distance measurement based on SD-OCT using multi-mode fiber probe for light delivery and collection", Proc. SPIE 11568, AOPC 2020: Optics Ultra Precision Manufacturing and Testing, 1156812 (5 November 2020); https://doi.org/10.1117/12.2579834

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