Ultra-narrow photonic nanojets formed by a micro/nanofiber array

Jinying Chen; Pinghui Wu; Zhiying Huang; Qinghua Zeng; Hui Ye; Qingsong Niu; Kang Lin

doi:10.1117/12.2548070

18 December 2019 Ultra-narrow photonic nanojets formed by a micro/nanofiber array

Jinying Chen, Pinghui Wu, Zhiying Huang, Qinghua Zeng, Hui Ye, Qingsong Niu, Kang Lin

Proceedings Volume 11336, AOPC 2019: Nanophotonics; 113360U (2019) https://doi.org/10.1117/12.2548070
Event: Applied Optics and Photonics China (AOPC2019), 2019, Beijing, China

Abstract

A photonic nanojet (PNJ) is a highly focused optical beam with a subwavelength waist on the shadow side of the dielectric microparticle. In this paper, we propose and numerically investigate the PNJ formed by a micro/nanofiber (MNF) array. Three-dimensional finite-difference time-domain (FDTD) simulations are conducted and demonstrate that an ultra-narrow photonic nanojet with a full-width at half maximum (FWHM) waist of 0.2λ can be obtained. Besides, key characteristic parameters of PNJ, including PNJ length, maximum intensity, and FWHM can be flexibly tuned by modifying the refractive index of the MNF, the diameter of the MNF, and the incident wavelength.

Citation Download Citation

Jinying Chen, Pinghui Wu, Zhiying Huang, Qinghua Zeng, Hui Ye, Qingsong Niu, and Kang Lin "Ultra-narrow photonic nanojets formed by a micro/nanofiber array", Proc. SPIE 11336, AOPC 2019: Nanophotonics, 113360U (18 December 2019); https://doi.org/10.1117/12.2548070

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