Please use this identifier to cite or link to this item: https://hdl.handle.net/10356/141735
Title: Influence of no-core fiber on the focusing performance of an ultra-small gradient-index fiber probe
Authors: Bi, Shubo
Wang, Chi
Zhu, Jun
Yuan, Zhiwen
Yu, Yingjie
Valyukh, Sergiy
Asundi, Anand
Keywords: Engineering::Mechanical engineering
Issue Date: 2018
Source: Bi, S., Wang, C., Zhu, J., Yuan, Z., Yu, Y., Valyukh, S., & Asundi, A. (2018). Influence of no-core fiber on the focusing performance of an ultra-small gradient-index fiber probe. Optics and Lasers in Engineering, 107, 46-53. doi:10.1016/j.optlaseng.2018.03.008
Journal: Optics and Lasers in Engineering
Abstract: The light-beam expansion effect of a no-core fiber on the focusing performance of an ultra-small gradient-index fiber probe is investigated with a view to optimizing the optical performance of such probes. By taking the variable relationship between the focusing performance (including the working distance and the focusing spot size) of the probe and the length of the no-core fiber as the criterion, the effective beam expansion length of the no-core fiber in the ultra-small gradient-index fiber probe is calculated based on the basic properties of the Gaussian beam. Verification and analysis are done by numerical calculations and experimental measurements, respectively. The obtained results show that the working distance of an ultra-small gradient-index fiber probe can be increased effectively by adding a no-core fiber; however, this will lead to increasing the focusing spot size. For the parameters of the fiber probe studied here, the effective beam expansion length of the no-core fiber spacer is less than 0.357 mm.
URI: https://hdl.handle.net/10356/141735
ISSN: 0143-8166
DOI: 10.1016/j.optlaseng.2018.03.008
Rights: © 2018 Elsevier Ltd. All rights reserved.
Fulltext Permission: none
Fulltext Availability: No Fulltext
Appears in Collections:MAE Journal Articles

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