title: Single-shot real-time frequency chirp characterization of telecommunication optical signals based on balanced temporal optical differentiation.
abstract: A simple single-shot frequency chirp characterization technique for telecommunication optical waveforms is introduced. The proposed technique is based on what we believe to be a novel balanced all-optical ultrafast differentiation scheme, and it enables a real-time conversion of the instantaneous frequency variation of an arbitrary complex (amplitude and phase) optical signal into a temporal intensity profile while simultaneously providing an efficient cancellation of the intensity noise. Single-shot real-time frequency chirp measurements of gigahertz-bandwidth phase-only and amplitude and phase temporal modulation waveforms are performed.
authors.affiliation: Institut National de la Recherche Scientifique (INRS), Centre Energie, Matériaux et Télécommunications, Varennes,Québec J3X 1S2, Canada. fangxin@emt.inrs.ca
authors.forename: Fangxing
authors.initials: F
authors.lastname: Li
authors.forename: Yongwoo
authors.initials: Y
authors.lastname: Park
authors.forename: José
authors.initials: J
authors.lastname: Azaña