Chinese Optics, Volume. 16, Issue 6, 1293(2023)
Advances in optical fiber tweezer technology based on hetero-core fiber
![Schematic diagrams of hetero-core optical fiber probe coupling structures. (a) Single-mode fiber direct fusion probe in one core, and the two-core light is achieved after coupling; (b) single-mode fiber direct fusion dual-core probe, taper welding area coupled through light[22]; (c) single-mode fiber core-offset splicing multimode probe to generate asymmetric Bessel-like beam by interference[27];(d) single-mode dislocation splicing hollow ring core fiber probe[13]; (e) single-mode fiber nanoprobe coupled hollow photonic crystal fiber[28]](/Images/icon/loading.gif){kind=icon}
Fig. 3. Schematic diagrams of hetero-core optical fiber probe coupling structures. (a) Single-mode fiber direct fusion probe in one core, and the two-core light is achieved after coupling; (b) single-mode fiber direct fusion dual-core probe, taper welding area coupled through light[22]; (c) single-mode fiber core-offset splicing multimode probe to generate asymmetric Bessel-like beam by interference[27];(d) single-mode dislocation splicing hollow ring core fiber probe[13]; (e) single-mode fiber nanoprobe coupled hollow photonic crystal fiber[28]
Fig. 4. Probe structure based on multi-core fiber optical tweezers. (a) Cross section of plasma tapered dual-core optical fiber tweezers [19]; (b) three-core optical micro-hand structure and vortex field intensity distribution[38]; (c) Four-core fiber end face microscope photo, fiber diameter is 150 μm and diagonal core spacing is 65 μm; design of fiber tweezers' cross section; a three-dimensional diagram of two convergent beams propagating from the processing diagonal fiber core. The sphere in the convergent region represents a captured cell[15]
Fig. 5. Structure and operating diagram of optical fiber tweezers with ring core structure.(a) Beak-shaped ring-core optic fiber probe and particle force simulation diagram[44]; (b) hollow ring core optical fiber tweezers[13]; (c) cross-section image of annular core fiber, image of annular core fiber probe with silica microspheres, and schematic diagram of dark field optical funnel[14]; (d) schematic diagram of size measurement interference method based on coaxial ring double waveguide.
Fig. 6. The structure and working principle of optical tweezers probe based on other core fiber structures. (a) Elliptical core optical fiber tweezers rotating yeast cells by using LP11 mode laser [57]; (b) schematic diagram of the principle of Bessel-like beam generated by multimode interference; fabricated all-fiber Bessel beam generation and its geometric parameters[16]
Table 1. Summary of particle capture abilities of hetero-core optical fiber tweezers
View tableView in ArticleTable 1. Summary of particle capture abilities of hetero-core optical fiber tweezers
光镊形式 光纤种类 微粒 折射率 微粒直径(µm) 功能 参考文献 中空圆台探针 环形芯 聚苯乙烯小球 1.39、1.49、1.59 15、25、35 捕获、收集、输运 [ 13 ]二氧化硅微球 集成探针 环形芯 二氧化硅小球 2.2 6 捕获吸收性微粒 [ 14 ]对角反射镜探针 四芯 酵母菌细胞 （椭球形） —— 7 捕获 [ 15 ]类贝塞尔发生器 空心 聚苯乙烯小球 1.55 10 多点位捕获 [ 16 ]金字塔棱锥探针 七芯 酵母菌细胞 （椭球形） —— 6 捕获位置可调节轴向双向输运 [ 17 ]光学微手 四芯 酵母菌细胞 （椭球形） —— 4-6 捕获旋转 [ 18 ]近场等离子激元 双芯 聚苯乙烯小球 1.49 0.01-5 二维捕获 [ 19 ]近场倏逝波 双芯 聚苯乙烯小球 1.59 2 二维捕获 [ 20 ]
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Hong LI, Ying-xin ZHU, Ya-ni ZHOU, Hai-bo WANG, Ming-li DONG, Lian-qing ZHU. Advances in optical fiber tweezer technology based on hetero-core fiber[J]. Chinese Optics, 2023, 16(6): 1293
Category: Review
Received: Jan. 12, 2023
Accepted: --
Published Online: Nov. 29, 2023
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