Equivalent-nanocircuit-theory-based design to infrared broad band-stop filters | Zendy

Qing Zhang | Zendy; Lihua Bai | Zendy; Zhengyuan Bai | Zendy; Pidong Hu | Zendy; Chengpu Liu | Zendy

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Equivalent-nanocircuit-theory-based design to infrared broad band-stop filters

Author(s) -

Qing Zhang,

Lihua Bai,

Zhengyuan Bai,

Pidong Hu,

Chengpu Liu

Publication year - 2015

Publication title -

optics express

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 1.394

H-Index - 271

ISSN - 1094-4087

DOI - 10.1364/oe.23.008290

Subject(s) - finite difference time domain method , optics , infrared , filter (signal processing) , polarization (electrochemistry) , band stop filter , frequency domain , optical filter , band pass filter , computer science , circuit design , physics , electronic engineering , low pass filter , telecommunications , bandwidth (computing) , engineering , chemistry , computer vision

We theoretically introduced a design paradigm and tool by extending the circuit functionalities from radio frequency to near infrared domain, and a broad band-stop filter, is successfully demonstrated by cascading triple layers of nano-square arrays. The feasibility is confirmed by its consistency with the rigorous FDTD calculation. Moreover, such a third-order Butterworth filter is not only insensitive to the incident angle and but also to input light's polarization. The new paradigm forms a theoretical foundation for designing optical devices and also enriches the classic circuit operations at the optical frequency region.

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