Wavelength switchable terahertz filter based on photonic crystal with liquid-crystal defect layer

Jian He; Joseph Novak; Yinli Jiang; Zhonglei Li; Rena Huang

doi:10.1117/12.918823

13 March 2012 Wavelength switchable terahertz filter based on photonic crystal with liquid-crystal defect layer

Jian He, Joseph Novak, Yinli Jiang, Zhonglei Li, Rena Huang

Proceedings Volume 8330, Photonics and Optoelectronics Meetings (POEM) 2011: Laser and Terahertz Science and Technology; 83300V (2012) https://doi.org/10.1117/12.918823
Event: Photonics and Optoelectronics Meetings 2011, 2011, Wuhan, China

Abstract

Electrically controlled wavelength switchable terahertz band pass filter based on photonic crystal structures with LC defect layer is proposed and discussed. The wavelength switching can be realized by reorienting liquid crystal molecules through adjusting the applied electric field. Numerical analyses results have shown that the proposed structure has the potential to realize electrically controlled terahertz filter with a high narrow transmission band and very sharp edges. What s more, the device can also function as a terahertz switch, and the theoretical extinction ratio of the device can reach more than 50dB.

Citation Download Citation

Jian He, Joseph Novak, Yinli Jiang, Zhonglei Li, and Rena Huang "Wavelength switchable terahertz filter based on photonic crystal with liquid-crystal defect layer", Proc. SPIE 8330, Photonics and Optoelectronics Meetings (POEM) 2011: Laser and Terahertz Science and Technology, 83300V (13 March 2012); https://doi.org/10.1117/12.918823

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