Graded-index fiber tip optical tweezers

Yuan Gong; Ai-Yan Ye; Yu Wu; Yunjiang Rao; Yao Yao; Song Xiao

doi:10.1117/12.2033669

15 October 2013 Graded-index fiber tip optical tweezers

Yuan Gong, Ai-Yan Ye, Yu Wu, Yunjiang Rao, Yao Yao, Song Xiao

Proceedings Volume 8924, Fourth Asia Pacific Optical Sensors Conference; 892409 (2013) https://doi.org/10.1117/12.2033669
Event: Asia Pacific Optical Sensors Conference 2013, 2013, Wuhan, China

Abstract

Optical fiber tweezers based on a graded-index multimode fiber (GIMMF) tip is proposed. Light propagation characteristics and gradient force distribution near the GIMMF tip are numerically investigated, which are further compared with that of optical fiber tips based on conventional single mode fibers. The simulated results indicated that by selecting optimal GIMMF length, the gradient force of the GIMMF tip tweezers is about 4 times higher than that of the SMF tip tweezers with a same shape. To prove the feasibility of such a new concept, optical trapping of yeast cells with a diameter of ~5 μm using the chemically-etched GIMMF tip is experimentally demonstrated and the trapping force is also calculated.

Citation Download Citation

Yuan Gong, Ai-Yan Ye, Yu Wu, Yunjiang Rao, Yao Yao, and Song Xiao "Graded-index fiber tip optical tweezers", Proc. SPIE 8924, Fourth Asia Pacific Optical Sensors Conference, 892409 (15 October 2013); https://doi.org/10.1117/12.2033669

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