Optical reflection from a free carrier-induced front in a slow light waveguide

Mahmoud A. Gaafar; Dirk Jalas; Liam O’Faolain; Juntao Li; Thomas F. Krauss; Alexander Yu. Petrov; Manfred Eich

doi:10.1117/12.2540480

26 February 2020 Optical reflection from a free carrier-induced front in a slow light waveguide

Mahmoud A. Gaafar, Dirk Jalas, Liam O’Faolain, Juntao Li, Thomas F. Krauss, Alexander Yu. Petrov, Manfred Eich

Proceedings Volume 11285, Silicon Photonics XV; 112850R (2020) https://doi.org/10.1117/12.2540480
Event: SPIE OPTO, 2020, San Francisco, California, United States

Abstract

Dynamic manipulation of light has received considerable attention in recent years. The process of an optical signal undergoing a transition between two modes of a photonic structure is referred to as a photonic transition. We show that a signal wave interacting with a free carrier front in a slow light waveguide experiences indirect photonic transitions leading to reflection from the moving front. Theory and experimental results are presented. The front induced dynamic frequency conversion is also compared to the frequency shifting based on other nonlinear effects like cross-phase modulation and four wave mixing.

Citation Download Citation

Mahmoud A. Gaafar, Dirk Jalas, Liam O’Faolain, Juntao Li, Thomas F. Krauss, Alexander Yu. Petrov, and Manfred Eich "Optical reflection from a free carrier-induced front in a slow light waveguide", Proc. SPIE 11285, Silicon Photonics XV, 112850R (26 February 2020); https://doi.org/10.1117/12.2540480

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