23 April 2015 Study on a tunable narrow-band filter based on magnetic defects in photonic crystal in the terahertz region
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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.
© 2015 Society of Photo-Optical Instrumentation Engineers (SPIE)
Hui Zhang, Xianfeng Xu, Fei Fan, Shengjiang Chang, "Study on a tunable narrow-band filter based on magnetic defects in photonic crystal in the terahertz region," Optical Engineering 54(4), 047104 (23 April 2015). https://doi.org/10.1117/1.OE.54.4.047104 . Submission:
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