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Proceedings Paper

Two-beam optical tweezers built by a two-core fiber
Author(s): Libo Yuan; Zhihai Liu; Jun Yang; Chunying Guan
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Paper Abstract

We present an abruptly tapered twin-core fiber optical tweezers, which is fabricated by fusing and drawing the twin-core fiber (TCF). The two beams guided by the TCF, and a larger converge angle between the two beams are made due to the abrupt tapered shape. The two beams converged at the micro-lensed tip, then forming a fast divergent optical field. The microscopic particle trapping performance of this special designed tapered TCF tip is investigated. The distribution of the optical field emerging from the tapered fiber tip is simulated based on the beam propagation method (BPM). By using this two-beam combined technique, a strong enough gradient forces well is obtained for microscopic particles trapping in three-dimensional. The abruptly tapered TCF optical tweezers is rigid and easy to handle, especially useful for build-up a multi-tweezers system for trapping and manipulating micro-scale particles.

Paper Details

Date Published: 16 May 2008
PDF: 4 pages
Proc. SPIE 7004, 19th International Conference on Optical Fibre Sensors, 70040R (16 May 2008); doi: 10.1117/12.785205
Show Author Affiliations
Libo Yuan, Harbin Engineering Univ. (China)
Zhihai Liu, Harbin Engineering Univ. (China)
Jun Yang, Harbin Engineering Univ. (China)
Chunying Guan, Harbin Engineering Univ. (China)

Published in SPIE Proceedings Vol. 7004:
19th International Conference on Optical Fibre Sensors
David Sampson; Stephen Collins; Kyunghwan Oh; Ryozo Yamauchi, Editor(s)

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