Abstract

This paper presents a sheet of graphene as a simple band-pass filter in terahertz and infrared frequencies. The central frequency and quality factor of this band-pass filter can be tuned by changing the physical parameters, such as the substrate thickness, gate voltage, temperature, and conductivity of the graphene. The effects of these parameters on surface plasmon polariton waves and filter specifications are numerically depicted.

© 2013 Optical Society of America

Planar tunable graphene based low-pass filter in the terahertz band

Amin Ghahremani and Gholamreza Moradi
Appl. Opt. 57(27) 7823-7829 (2018)

Dynamically tunable reflecting near-infrared bandpass filter based on a hybrid graphene–nanometallic structure

Seyed Edriss Mirnia and Brian A. Lail
Appl. Opt. 59(18) 5608-5614 (2020)

Ultra-compact beam splitter and filter based on a graphene plasmon waveguide

Junbo Yang, He Xin, Yunxin Han, Dingbo Chen, Jingjing Zhang, Jie Huang, and Zhaojian Zhang
Appl. Opt. 56(35) 9814-9821 (2017)

A novel structure for tunable terahertz absorber based on graphene

Bing-zheng Xu, Chang-qing Gu, Zhuo Li, and Zhen-yi Niu
Opt. Express 21(20) 23803-23811 (2013)

Tunable dual-band graphene-based infrared reflectance filter

Michael D. Goldflam, Isaac Ruiz, Stephen W. Howell, Joel R. Wendt, Michael B. Sinclair, David W. Peters, and Thomas E. Beechem
Opt. Express 26(7) 8532-8541 (2018)