title: Experimental demonstration of ultrafast all-fiber high-order photonic temporal differentiators.
abstract: We propose and demonstrate what we believe to be a new, simple, and compact all-fiber design for arbitrary-order ultrafast optical temporal differentiation. The proposed design allows us to implement any desired differentiation order using a maximum of two concatenated fiber gratings, both operating in transmission. A single specially apodized chirped fiber Bragg grating is required for implementing any even-order differentiator, whereas the immediately next odd-order differentiator can be implemented by concatenating a long-period fiber-grating first-order differentiator. Besides its simplicity, this scheme provides an optimized energetic efficiency. We experimentally demonstrate a set of high-order all-optical time differentiators (up to the fourth order) capable of accurately processing arbitrary optical waveforms with picosecond time features.
authors.affiliation: Institut National de la Recherche Scientifique-Energie, Matériaux et Télécommunications (INRS-EMT), Montréal, Québec H5A 1K6, Canada. rivas@emt.inrs.ca
authors.forename: Luis M
authors.initials: LM
authors.lastname: Rivas
authors.forename: Sylvain
authors.initials: S
authors.lastname: Boudreau
authors.forename: Yongwoo
authors.initials: Y
authors.lastname: Park
authors.forename: Radan
authors.initials: R
authors.lastname: Slavík
authors.forename: Sophie
authors.initials: S
authors.lastname: Larochelle
authors.forename: Alejandro
authors.initials: A
authors.lastname: Carballar
authors.forename: José
authors.initials: J
authors.lastname: Azaña