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Chin. Opt. Lett.
 Home  List of Issues    Issue 05 , Vol. 16 , 2018    10.3788/COL201816.053501

Single fiber dual-functionality optical tweezers based on graded-index multimode fiber
Zhihai Liu1;2, Tong Wang1, Yaxun Zhang1, Xiaoyun Tang1, Peikun Liu1, Yu Zhang1, Xinghua Yang1, Jianzhong Zhang1, Jun Yang1, and Libo Yuan1;3
1 Key Laboratory of In-fiber Integrated Optics, Ministry of Education, [Harbin Engineering University], Harbin 1 50001 , China
2 National Demonstration Center for Experimental Physics Education, [Harbin Engineering University], Harbin 150001, China
3 Photonics Research Center, [Guilin University of Electronics Technology], Guilin 541004, China

Chin. Opt. Lett., 2018, 16(05): pp.053501

Topic:Other areas of optics
Keywords(OCIS Code): 350.4855  140.7010  

We propose and demonstrate single fiber dual-functionality optical tweezers based on a graded-index multimode fiber. By using the multi-angle fiber grinding and polishing technology, we fabricate the multimode fiber tip to be a special tapered shape, contributing to focus the outgoing beam with a large intensity gradient for the first functionality—three-dimensional contactless trapping of a microparticle. By adjusting the radial direction offset between the lead-in single mode fiber and the graded-index multimode fiber, we perform the second functionality—axial shift of the trapped microparticle with respect to the fiber tip without need of moving the fiber probe itself. It is convenient for practical applications. The theoretical and experimental results about the relationship between the radial offset and the equilibrium positions of the microparticle have the good consistency. Tailoring the trap and axial shift of the microparticle based on the graded-index multimode fiber provides convenient avenues for fiber optical tweezers applied in practical researches.

Copyright: © 2003-2012 . This is an open-access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited.

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Posted online:2018/4/25

Get Citation: Zhihai Liu, Tong Wang, Yaxun Zhang, Xiaoyun Tang, Peikun Liu, Yu Zhang, Xinghua Yang, Jianzhong Zhang, Jun Yang, and Libo Yuan, "Single fiber dual-functionality optical tweezers based on graded-index multimode fiber," Chin. Opt. Lett. 16(05), 053501(2018)

Note: This work was supported by the National Natural Science Foundation of China (Nos. 11574061, 61405043, and 61675053), the 111 Project (No. B13015), and the Fundamental Research Funds for Harbin Engineering University of China.


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