title: Integrated optical temporal Fourier transformer based on a chirped Bragg grating waveguide.
abstract: We experimentally demonstrate the first integrated temporal Fourier transformer based on a linearly chirped Bragg grating waveguide written in silica glass with a femtosecond laser. The operation is based on mapping the energy spectrum of the input optical signal to the output temporal waveform by making use of first-order chromatic dispersion. The device operates in reflection, has a bandwidth of 10 nm, and can be used for incident temporal waveforms as long as 20 ps. Experimental results, obtained through both temporal oscilloscope traces and Fourier transform spectral interferometry, display a successful Fourier transformation of in-phase and out-of-phase pairs of input optical pulses, and demonstrate the correct functionality of the device for both amplitude and phase of the temporal output.
authors.affiliation: Department of Electrical and Computer Engineering, University of Toronto, Toronto, Ontario, Canada. ksenia.dolgaleva@utoronto.ca
authors.forename: Ksenia
authors.initials: K
authors.lastname: Dolgaleva
authors.forename: Antonio
authors.initials: A
authors.lastname: Malacarne
authors.forename: Pamela
authors.initials: P
authors.lastname: Tannouri
authors.forename: Luís A
authors.initials: LA
authors.lastname: Fernandes
authors.forename: Jason R
authors.initials: JR
authors.lastname: Grenier
authors.forename: J Stewart
authors.initials: JS
authors.lastname: Aitchison
authors.forename: José
authors.initials: J
authors.lastname: Azaña
authors.forename: Roberto
authors.initials: R
authors.lastname: Morandotti
authors.forename: Peter R
authors.initials: PR
authors.lastname: Herman
authors.forename: Paulo V S
authors.initials: PV
authors.lastname: Marques