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Proceedings Paper

Optical push broom in a silicon waveguide
Author(s): Mahmoud A. Gaafar; He Li; Xinlun Cai; Juntao Li; Manfred Eich; Alexander Yu. Petrov
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Paper Abstract

We report on light trapping by a moving refractive index front inside a silicon waveguide, the so-called optical push broom effect. The front generated by a fast pump pulse collects and traps the energy of a signal wave with smaller group velocity tuned near to the band gap of the waveguide with hyperbolic dispersion. The energy of the signal wave is accumulated inside the front and distributed in frequency. The presented effect can be utilized to compress signals in time and space.

Paper Details

Date Published: 13 April 2020
PDF: 6 pages
Proc. SPIE 11358, Nonlinear Optics and its Applications 2020, 113580D (13 April 2020); doi: 10.1117/12.2555758
Show Author Affiliations
Mahmoud A. Gaafar, Hamburg Univ. of Technology (Germany)
Menoufia Univ. (Egypt)
He Li, Sun Yat-Sen Univ. (China)
Xinlun Cai, Sun Yat-Sen Univ. (China)
Juntao Li, Sun Yat-Sen Univ. (China)
Manfred Eich, Hamburg Univ. of Technology (Germany)
Helmholtz-Zentrum Geesthacht (Germany)
Alexander Yu. Petrov, Hamburg Univ. of Technology (Germany)
ITMO Univ. (Russian Federation)

Published in SPIE Proceedings Vol. 11358:
Nonlinear Optics and its Applications 2020
Neil G. R. Broderick; John M. Dudley; Anna C. Peacock, Editor(s)

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