title: Optically fed microwave true-time delay based on a compact liquid-crystal photonic-bandgap-fiber device.
abstract: An electrically tunable liquid-crystal, photonic-bandgap-fiber-device-based, optically fed microwave, true-time delay is demonstrated with the response time in the millisecond range. A maximum electrically controlled phase shift of around 70 degrees at 15 GHz and an averaged 12.9 ps true-time delay over the entire modulation frequency range of 1-15 GHz are obtained.
authors.affiliation: DTU Fotonik, Department of Photonics Engineering, Technical University of Denmark, DK-2800 Lyngby, Denmark. lewe@fotonik.dtu.dk
authors.forename: Lei
authors.initials: L
authors.lastname: Wei
authors.forename: Weiqi
authors.initials: W
authors.lastname: Xue
authors.forename: Yaohui
authors.initials: Y
authors.lastname: Chen
authors.forename: Thomas Tanggaard
authors.initials: TT
authors.lastname: Alkeskjold
authors.forename: Anders
authors.initials: A
authors.lastname: Bjarklev