title: High-speed infrared phase modulators using short helical pitch ferroelectric liquid crystals.
abstract: A fast phase modulator based on ferroelectric liquid crystal (FLC) is demonstrated and its performances characterized. For uniform alignment and pure phase modulation, we propose a new FLC device configuration using short helical pitch material and homeotropic alignment structure. This device is driven by periodic in-plane electrode stripes implemented on the surface of both cell substrates. As a result, we have obtained large phase modulation (> 2pi at lambda=1.55 microm) and fast response (< 200 microsec).
authors.forename: Ju-Hyun
authors.initials: JH
authors.lastname: Lee
authors.forename: Dong-Woo
authors.initials: DW
authors.lastname: Kim
authors.forename: Yung-Hsun
authors.initials: YH
authors.lastname: Wu
authors.forename: Chang-Jae
authors.initials: CJ
authors.lastname: Yu
authors.forename: Sin-Doo
authors.initials: SD
authors.lastname: Lee
authors.forename: Shin-Tson
authors.initials: ST
authors.lastname: Wu