Abstract

The effects of magnetic birefringence of liquid crystal E7 on the photonic bandgaps and the transmitting properties in two-dimensional photonic crystal waveguides are investigated by using the plane wave expansion and finite-difference time domain methods. Detailed calculations on the shifts and variations in the frequency width of bandgaps reveal that under the control of an external magnetic field the two-dimensional liquid-crystal-filled photonic crystal waveguide can serve as a switch and continuously tunable bandpass filter at the terahertz wave band.

© 2008 Optical Society of America

Magnetic photonic crystals for terahertz tunable filter and multifunctional polarization controller

Fei Fan, Zhan Guo, Jin-Jun Bai, Xiang-Hui Wang, and Sheng-Jiang Chang
J. Opt. Soc. Am. B 28(4) 697-702 (2011)

Multifunctional photonic crystal cross waveguide for terahertz waves

Ben Wu, Hui Zhang, Peng Guo, Qian Wang, and Shengjiang Chang
J. Opt. Soc. Am. B 27(3) 505-511 (2010)

Terahertz wave switch based on silicon photonic crystals

Jiusheng Li, Jinlong He, and Zhi Hong
Appl. Opt. 46(22) 5034-5037 (2007)

Characteristic investigation of 2D photonic crystals with full material anisotropy under out-of-plane propagation and liquid-crystal-filled photonic-band-gap-fiber applications using finite element methods

Sen-ming Hsu and Hung-chun Chang
Opt. Express 16(26) 21355-21368 (2008)

Analytical method for band structure calculation of photonic crystal fibers filled with liquid crystal

Juan Juan Hu, Guobin Ren, Ping Shum, Xia Yu, Guanghui Wang, and Chao Lu
Opt. Express 16(9) 6668-6674 (2008)