title: Temporal differentiation of optical signals using a phase-shifted fiber Bragg grating.
abstract: We propose and experimentally demonstrate an all-optical (all-fiber) temporal differentiator based on a simple pi-phase-shifted fiber Bragg grating operated in reflection. The proposed device can calculate the first time derivative of the complex field of an arbitrary narrowband optical waveform with a very high accuracy and efficiency. Specifically, the experimental fiber grating differentiator reported here offers an operation bandwidth of approximately 12 GHz. We demonstrate the high performance of this device by processing gigahertz-bandwidth phase and intensity optical temporal variations.
authors.forename: Naum K
authors.initials: NK
authors.lastname: Berger
authors.forename: Boris
authors.initials: B
authors.lastname: Levit
authors.forename: Baruch
authors.initials: B
authors.lastname: Fischer
authors.forename: Mykola
authors.initials: M
authors.lastname: Kulishov
authors.forename: David V
authors.initials: DV
authors.lastname: Plant
authors.forename: José
authors.initials: J
authors.lastname: Azaña