title: Voltage-induced defect mode coupling in a one-dimensional photonic crystal with a twisted-nematic defect layer.
abstract: Defect modes are investigated in a band gap of an electrically tunable one-dimensional photonic crystal infiltrated with a twisted-nematic liquid crystal. 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 (i.e., the Mauguin condition). It is shown theoretically that the defect modes could have a complex structure with elliptic polarization. Two series of polarized modes are coupled with each other and exhibit an avoided crossing phenomenon in the case of opposite parity.
authors.affiliation: L. V. Kirensky Institute of Physics, Krasnoyarsk Scientific Center, Siberian Branch of the Russian Academy of Sciences, Krasnoyarsk 660036, Russia. tiv@iph.krasn.ru
authors.forename: Ivan V
authors.initials: IV
authors.lastname: Timofeev
authors.forename: Yu-Ting
authors.initials: YT
authors.lastname: Lin
authors.forename: Vladimir A
authors.initials: VA
authors.lastname: Gunyakov
authors.forename: Sergey A
authors.initials: SA
authors.lastname: Myslivets
authors.forename: Vasily G
authors.initials: VG
authors.lastname: Arkhipkin
authors.forename: Stepan Ya
authors.initials: SY
authors.lastname: Vetrov
authors.forename: Wei
authors.initials: W
authors.lastname: Lee
authors.forename: Victor Ya
authors.initials: VY
authors.lastname: Zyryanov
mesh_terms: D003198:Computer Simulation; D004574:Electromagnetic Fields; D050866:Liquid Crystals / Q000737:chemistry* / Q000528:radiation effects*; D008956:Models, Chemical; D008958:Models, Molecular; D017785:Photons