Fiber-based broadband detection of a rotational object with superposed vortices

Tang, Z., Wan, Z., Cao, H., Liang, Y., Zhou, W., Zhang, Y., Fang, L. and Wang, J. (2023) Fiber-based broadband detection of a rotational object with superposed vortices. APL Photonics, 8, 126101. (doi: 10.1063/5.0167478)

Abstract

Recently, the rotational Doppler effect has attracted broad attention in detecting rotational motion. However, the presently proposed detection techniques based on the rotational Doppler effect are generally configured relying on discrete components in free space, resulting in cumbersome and inflexible systems, which brings challenges to practical applications. In this paper, we demonstrate a fiber-based configuration on rotational Doppler measurements for the detection of a rotational object using an ultra-broadband mode-selective coupler to convert the superposed vortices. Remarkably, the results show the broadband operating range of the fiber-based measurement system intuitively through wavelength scanning. The refinement of rotational Doppler detection techniques is of great significance for lowering the cost, reducing system complexity, improving system integration, and industrial manufacturing. This fiber-based scheme might be a promising candidate for facilitating the rotational Doppler effect applied as novel motion monitoring and sensing equipment in engineering and industry.

• Item Type: Articles
• Additional Information: This work was supported by the National Natural Science Foundation of China (NSFC) (Grant Nos. 62125503 and 62261160388), the Natural Science Foundation of Hubei Province of China (Grant No. 2023AFA028), the Key R and D Program of Hubei Province of China (Grant Nos. 2020BAB001 and 2021BAA024), the Shenzhen Science and Technology Program (Grant No. JCYJ20200109114018750), and the Innovation Project of Optics Valley Laboratory (Grant No. OVL2021BG004).
• Status: Published
• Refereed: Yes
• Glasgow Author(s) Enlighten ID: Wan, Zhenyu
• Authors: Tang, Z., Wan, Z., Cao, H., Liang, Y., Zhou, W., Zhang, Y., Fang, L., and Wang, J.
• College/School: College of Science and Engineering
• Journal Name: APL Photonics
• Publisher: AIP Publishing
• ISSN: 2378-0967
• ISSN (Online): 2378-0967
• Published Online: 01 December 2023
• Copyright Holders: Copyright © The Authors 2023
• First Published: First published in ALP Photonics 8:126101
• Publisher Policy: Reproduced under a Creative Commons licence