title: Design of terahertz-bandwidth arbitrary-order temporal differentiators based on long-period fiber gratings.
abstract: We show that long-period fiber grating (LPG) incorporating N-1pi-phase shifts can serve as an Nth order temporal differentiator that operates in transmission. Due to the inherent large bandwidth provided by LPGs, subpicosecond (terahertz-bandwidth) optical signals may be processed with centimeters-length devices. Design parameters for up to fifth-order differentiators are given.
authors.affiliation: HTA Photomask Inc., 1605 Remuda Lane, San Jose, California 95112, USA.
authors.forename: Mykola
authors.initials: M
authors.lastname: Kulishov
authors.forename: David
authors.initials: D
authors.lastname: Krcmarík
authors.forename: Radan
authors.initials: R
authors.lastname: Slavík