Ultrafast all-optical temporal differentiation in integrated phase-shifted Bragg gratings

Katarzyna A. Rutkowska; David Duchesne; Michael J. Strain; José Azana; Roberto Morandotti; Marc Sorel

doi:10.1117/12.881005

14 December 2010 Ultrafast all-optical temporal differentiation in integrated phase-shifted Bragg gratings

Katarzyna A. Rutkowska, David Duchesne, Michael J. Strain, José Azana, Roberto Morandotti, Marc Sorel

Proceedings Volume 7746, 17th Slovak-Czech-Polish Optical Conference on Wave and Quantum Aspects of Contemporary Optics; 77461Z (2010) https://doi.org/10.1117/12.881005
Event: 17th Slovak-Czech-Polish Optical Conference on Wave and Quantum Aspects of Contemporary Optics, 2010, Liptovsky Jan, Slovakia

Abstract

All-optical communications and data processing exemplifies an important alternative to overcome the speed and bandwidth limitations imposed by electronics. Specifically, practical implementation of analog operations, including optical temporal differentiation, is fundamental for future ultrafast signal processing and computing networks. In addition, the development of fully integrated systems that allow on-single-chip operations is of significant interest. In this work we report the design, fabrication tolerances and first experimental demonstration of an integrated, ultrafast differentiator based on π-phase-shifted Bragg gratings. By using deeply-sidewall-etched Silicon-on-Insulator (SOI) ridged waveguides, first-order optical differentiation has been achieved on sub-millimeters length scales, reaching THz processing speeds. The proposed device has numerous potential applications, including all-optical, analog solving of differential equations (important for virtual modeling of scientific phenomena)¹, data processing and analysis², as well as for the generation of Hermite-Gaussian waveforms (used for arbitrary optical coding and decoding)³.

Citation Download Citation

Katarzyna A. Rutkowska, David Duchesne, Michael J. Strain, José Azana, Roberto Morandotti, and Marc Sorel "Ultrafast all-optical temporal differentiation in integrated phase-shifted Bragg gratings", Proc. SPIE 7746, 17th Slovak-Czech-Polish Optical Conference on Wave and Quantum Aspects of Contemporary Optics, 77461Z (14 December 2010); https://doi.org/10.1117/12.881005

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