Open AccessUltrafast all-optical temporal differentiators based on CMOS-compatible integrated-waveguide Bragg gratings
Author(s) -
Katarzyna A. Rutkowska,
D. Duchesne,
Michael J. Strain,
Roberto Morandotti,
Marc Sorel,
José Azaña
Publication year - 2011
Publication title -
optics express
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.394
H-Index - 271
ISSN - 1094-4087
DOI - 10.1364/oe.19.019514
Subject(s) - optics , ultrashort pulse , fiber bragg grating , apodization , waveguide , optoelectronics , picosecond , photonics , differentiator , materials science , terahertz radiation , photonic integrated circuit , cmos , bandwidth (computing) , physics , laser , computer science , telecommunications
We report the first realization of integrated, all-optical first- and higher-order photonic differentiators operating at terahertz (THz) processing speeds. This is accomplished in a Silicon-on-Insulator (SOI) CMOS-compatible platform using a simple integrated geometry based on (π-)phase-shifted Bragg gratings. Moreover, we achieve on-chip generation of sub-picosecond Hermite-Gaussian pulse waveforms, which are noteworthy for applications in next-generation optical telecommunications.