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Proceedings Paper

Optimization of parameters for dual fiber optical tweezers
Author(s): Zhihai Liu; Chengkai Guo; Jun Yang; Libo Yuan
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Paper Abstract

The optimization of parameters for dual fiber optical tweezers is presented in this paper. Mode transmission properties are analyzed theoretically and characteristics of the optical field in tapered fiber are numerically simulated using FDTD method. The optimization of fiber's parameters such as the taper angle, radius of the fiber tip-lens and cladding radius at the tip of the tapered fiber is discussed in detail for the dual fiber optical tweezers. It is indicated that, for a common use, the taper angle should be as small as possible and the micro lens should be fabricated at the tip of the taper where the cladding is polished close to the fiber core. Experiments were done to investigate structural parameters including the arranged angle and the horizontal distance between the two fiber ends. Results indicate that the transverse trapping force is enhanced as the arranged angle reducing and there is an optimal horizontal distance between two fiber ends.

Paper Details

Date Published: 27 October 2006
PDF: 7 pages
Proc. SPIE 6047, Fourth International Conference on Photonics and Imaging in Biology and Medicine, 60473L (27 October 2006); doi: 10.1117/12.710729
Show Author Affiliations
Zhihai Liu, Harbin Engineering Univ. (China)
Chengkai Guo, Harbin Engineering Univ. (China)
Jun Yang, Harbin Engineering Univ. (China)
Libo Yuan, Harbin Engineering Univ. (China)

Published in SPIE Proceedings Vol. 6047:
Fourth International Conference on Photonics and Imaging in Biology and Medicine
Kexin Xu; Qingming Luo; Da Xing; Alexander V. Priezzhev; Valery V. Tuchin, Editor(s)

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