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P‐11.10: Active Switching of Photonic Nanojet
Author(s) -
Du Bintao,
Xia Jun
Publication year - 2019
Publication title -
sid symposium digest of technical papers
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.351
H-Index - 44
eISSN - 2168-0159
pISSN - 0097-966X
DOI - 10.1002/sdtp.13697
Subject(s) - finite difference time domain method , materials science , refractive index , dielectric , microsphere , photonics , polystyrene , magnetic field , plane wave , optics , optoelectronics , physics , polymer , composite material , quantum mechanics , chemical engineering , engineering
We exhibit a three‐dimensional (3D) photonic nanojet (PNJ) based on a dielectric microsphere irradiated by a plane wave with the finite‐difference time‐domain (FDTD) method. The influence of surrounding refractive index on PNJ using the FDTD is demonstrated. Furthermore, We propose a switchable PNJ created by a polystyrene (PS) microsphere with nematic liquid crystals (NLCs) surrounded. The orientation of the LC molecules can be controlled by the application of external magnetic field. Our FDTD simulation results show that the PNJ can be switched on and off by modulating the refractive index of the NLCs. The combination of PNJ and NLCs is extremely useful to fabricate integrated optical devices.