title: Tunable bi-functional photonic device based on one-dimensional photonic crystal infiltrated with a bistable liquid-crystal layer.
abstract: We investigated the optical properties of a one-dimensional photonic crystal infiltrated with a bistable chiral tilted homeotropic nematic liquid crystal as the central defect layer. By modulating the nematic director orientation with applied voltage, the electrical tunability of the defect modes was observed in the transmission spectrum. The composite not only is a general tunable device but also involves the green concept in that it can operate in two stable states at 0 V. Under the parallel-polarizer scheme, the spectral characteristics suggest a potential application for this device as an energy-efficient multichannel optical switch.
authors.affiliation: Department of Physics, Chung Yuan Christian University, Chung-Li, 32023 Taiwan.
authors.forename: Chong-Yin
authors.initials: CY
authors.lastname: Wu
authors.forename: Yi-Hong
authors.initials: YH
authors.lastname: Zou
authors.forename: Ivan
authors.initials: I
authors.lastname: Timofeev
authors.forename: Yu-Ting
authors.initials: YT
authors.lastname: Lin
authors.forename: Victor Ya
authors.initials: VY
authors.lastname: Zyryanov
authors.forename: Jy-Shan
authors.initials: JS
authors.lastname: Hsu
authors.forename: Wei
authors.initials: W
authors.lastname: Lee