4.6 Article

Ultrafast all-optical temporal differentiators based on CMOS-compatible integrated-waveguide Bragg gratings

Journal

OPTICS EXPRESS
Volume 19, Issue 20, Pages 19514-19522

Publisher

OPTICAL SOC AMER
DOI: 10.1364/OE.19.019514

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Funding

  1. NSERC (Natural Sciences and Engineering Research Council of Canada)
  2. FQRNT (Fonds Quebecois de la Recherche sur la Nature et les Technologies)
  3. CIPI (Canadian Institute for Photonic Innovations)
  4. Marie Curie Outgoing International Fellowship [MOIF-CT-2006-039600]

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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 (pi-) 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. (C) 2011 Optical Society of America

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