Temperature-controlled switchable photonic nanojet generated by truncated cylindrical structure

Ning Su; Weiming Zhang; Pinghui Wu

doi:10.1117/12.3015602

29 December 2023 Temperature-controlled switchable photonic nanojet generated by truncated cylindrical structure

Ning Su, Weiming Zhang, Pinghui Wu

Proceedings Volume 12975, 6th Optics Young Scientist Summit (OYSS 2023); 129750N (2023) https://doi.org/10.1117/12.3015602
Event: 6th Optics Young Scientist Summit, 2023, Changsha, China

Abstract

We propose a switchable photonic nanojet (PNJ) generated by a truncated cylindrical structure covered with a thin film of vanadium oxide (VO₂). The switching of the PNJ is realized by the change of external temperature. By changing the temperature, the properties of the VO₂ film can be changed to achieve the switching between metallic and nonmetallic phases, which in turn switches the PNJ. In addition to this, we optimized the dimensions of the truncated top cylinder and the thickness of the film, which led to a further improvement of the properties of the PNJ. The results show that the structure works with a strength contrast of 85.62% between the open and closed states of the PNJ. Overall, this structure adds the parameter of temperature to the modulation of the properties of the PNJ, which is of great significance for the development of novel integrated photonic devices.

(2023) Published by SPIE. Downloading of the abstract is permitted for personal use only.

Citation Download Citation

Ning Su, Weiming Zhang, and Pinghui Wu "Temperature-controlled switchable photonic nanojet generated by truncated cylindrical structure", Proc. SPIE 12975, 6th Optics Young Scientist Summit (OYSS 2023), 129750N (29 December 2023); https://doi.org/10.1117/12.3015602

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