Optical switch: Dynamically controllable plasmon-induced transparency and polarization-insensitive operation.
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| Title: | Optical switch: Dynamically controllable plasmon-induced transparency and polarization-insensitive operation. |
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| Authors: | Wu, Xuehua1 (AUTHOR), Chen, Xiner2 (AUTHOR), Zhu, Jun1,2 (AUTHOR) zhujun1985@gxnu.edu.cn |
| Source: | Modern Physics Letters B. 7/20/2026, Vol. 40 Issue 20, p1-12. 12p. |
| Subjects: | Optical switches, Vanadium dioxide, Light filters, Plasmonics, Surface plasmons, Graphene, Integrated optics, Optical properties |
| Abstract: | By taking advantage of the plasmon properties of graphene, a plasmon-induced transparency (PIT) system with multi-mode coupling can be constructed. We present a polarization-insensitive multifunctional metasurface leveraging graphene-vanadium dioxide (VO2) composites, where PIT arises from tailored bright–dark mode interactions. By capitalizing on the thermally triggered insulator-metal transition of VO2, we demonstrate a quadruple-band optical switch with exceptional metrics: 99% modulation depth (MD), 1.2 dB insertion loss (IL), and 8.7 dB (ER) extinction ratio — collectively enhancing signal integrity in photonic systems. Furthermore, this reconfigurable platform achieves VO2-tunable band-stop filtering via PIT modulation, advancing dynamically programmable photonic integrated circuits. [ABSTRACT FROM AUTHOR] |
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| Database: | Engineering Source |
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