This paper designs a two-dimensional (2D) photonic crystal based THz bandpass filter (BPF). Fine bandpass property is realized by introducing symmetrical point defect on both sides of a line defect 2D photonic crystal to the forming of resonant cavity. This kind of 2D photonic crystal filter has large bandwidth and its out-band rejection properties can be further improved by introducing more pairs of symmetric point defects to realizing the cascading of more resonant cavity. The designed filter can satisfy application needs in THz communication and radar systems.

Date Published: 23 August 2013
PDF: 5 pages
Proc. SPIE 8909, International Symposium on Photoelectronic Detection and Imaging 2013: Terahertz Technologies and Applications, 89090T (23 August 2013);

Published in SPIE Proceedings Vol. 8909:
International Symposium on Photoelectronic Detection and Imaging 2013: Terahertz Technologies and Applications
Marco Rahm; Konstantin Vodopyanov; Wei Shi; Cunlin Zhang, Editor(s)