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Optical Engineering

Study on a tunable narrow-band filter based on magnetic defects in photonic crystal in the terahertz region
Author(s): Hui Zhang; Xianfeng Xu; Fei Fan; Shengjiang Chang
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Paper Abstract

A narrow-band filter with a broad tuning range is designed based on a magnetic field controlled ferrite defect in photonic crystal for a terahertz (THz) wave. The resonance defect modes of a ferrite defect in photonic crystal in the THz region are studied by using the finite difference time domain method. Detailed calculations on the shifts of the defect mode frequency and transmission properties reveal that the peak frequency of transmission spectra can continuously vary from 0.77 to 0.95 THz under the external magnetic field and the bandwidth of the filter is about 0.015 THz.

Paper Details

Date Published: 23 April 2015
PDF: 5 pages
Opt. Eng. 54(4) 047104 doi: 10.1117/1.OE.54.4.047104
Published in: Optical Engineering Volume 54, Issue 4
Show Author Affiliations
Hui Zhang, China Univ. of Petroleum (East China) (China)
Xianfeng Xu, China Univ. of Petroleum (China)
Fei Fan, Nankai Univ. (China)
Shengjiang Chang, Nankai Univ. (China)


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