\begin{document}$0.8 \times {10^{ - 14}}$\end{document} to \begin{document}$1.4 \times {10^{ - 14}}\;{{\rm{cm}}^{ - 2}}$\end{document}, the resonant frequency of transparent window increases 7.5628 THz. In a dual-band PIT model, under the same change of relaxation rate, the resonant frequencies of the two transparent windows increase 6.8593 and 9.1457 THz, at the same time, and the resonant frequencies of the three transparent windows in triple-band PIT model increase 6.8593, 8.7939 and 11.2563 THz respectively. In addition to the resonant frequency, the transmittance at the dip frequency in each model gradually decreases, and the depth of depression gradually increases. Finally, the sensing characteristics of the single-band PIT model are further studied. When the refractive index of the background changes from small to large, the dip frequency and the resonant frequency of the transparent window will be significantly red-shifted. The change of frequency is approximately linear with refractive index. The model has a sensitivity of 6110.6 (nm/RIU) and a figure of merit of 7.39 (1/RIU) which is better than the same type of sensor. This model provides a theoretical reference for designing the multiband filtering and ultrasensitive sensors. "> - 必威体育下载

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Citation:

    Hu Bao-Jing, Huang Ming, Li Peng, Yang Jing-Jing
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    • Abstract views:4183
    • PDF Downloads:92
    • Cited By:0
    Publishing process
    • Received Date:14 August 2020
    • Accepted Date:07 September 2020
    • Available Online:03 February 2021
    • Published Online:20 February 2021

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