Journal
OPTICS COMMUNICATIONS
Volume 419, Issue -, Pages 8-12Publisher
ELSEVIER SCIENCE BV
DOI: 10.1016/j.optcom.2018.02.066
Keywords
Terahertz; Photonic crystal fiber; Liquid crystal; Polarization controller
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Funding
- specialized research fund for the doctoral program of higher education [20131201120004]
- National Natural Science Foundation of China [61605144]
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A new type of terahertz fiber is presented based on composite lattice photonic crystal bandgap. The cladding is filled selectively with the nematic liquid crystal 5CB which is sensitive to the electric field. The terahertz wave can be modulated by using the electric field to control the orientation of liquid crystal molecules. The plane wave expansion method and the finite element method are employed to theoretically analyze bandgap characteristics, polarization characteristics, energy fraction and material absorption loss. The results show that this fiber structure can be used as tunable terahertz polarization controller.
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