Voltage-induced defect mode interaction in a one-dimensional photonic crystal with a twisted-nematic defect layer

Details Voltage-induced defect mode interaction in a one-dimensional photonic crystal with a twisted-nematic defect layer Voltage-induced defect mode interaction in a one-dimensional photonic crystal with a twisted-nematic defect layer

2011-10-21

arxiv.org/abs/1110.4725v1

PhysRevE, 85, 011705 (2012)

Physics

Optics

14 pages, 8 figures, sent to PRE

Scientific paper

10.1103/PhysRevE.85.011705

Defect modes are investigated in a band gap of an electrically tunable one-dimensional photonic crystal infiltrated with a twisted-nematic liquid crystal (1D PC/TN). Their frequency shift and interference under applied voltage are studied both experimentally and theoretically. We deal with the case where the defect layer thickness is much larger than the wavelength (Mauguin condition). It is shown theoretically that the defect modes could have a complex structure with the elliptic polarization. Two series of polarized modes interact with each other and exhibit an avoided crossing phenomenon in the case of opposite parity.

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