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Proceedings Paper

All-optical dynamic frequency conversion in silicon photonic crystal cavities
Author(s): Michel Castellanos Munoz; Alexander Yu. Petrov; Manfred Eich
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Paper Abstract

We propose and for the first time realize a concept for dynamic frequency conversion in silicon photonic crystal cavities using an in-plane pumping configuration. The required fast index change of silicon is performed by generating free carriers through two-photon absorption of a pump pulse. We perform a theoretical analysis of the time dependence of the energy in a cavity coupled to two identical ports that is excited by a Gaussian signal. We find that the maximum energy that can be stored in the cavity is always lower than the energy of the excitation pulse and that it depends on the ratio of the cavity lifetime to signal duration. At the optimum of this ratio, a maximum of 40% of the input pulse energy can be stored in the cavity and thus submitted to the dynamic frequency conversion process. We show experimentally a dynamic frequency shift of 7.5•10-2 THz .

Paper Details

Date Published: 25 April 2012
PDF: 8 pages
Proc. SPIE 8425, Photonic Crystal Materials and Devices X, 84250I (25 April 2012); doi: 10.1117/12.921680
Show Author Affiliations
Michel Castellanos Munoz, Technische Univ. Hamburg-Harburg (Germany)
Alexander Yu. Petrov, Technische Univ. Hamburg-Harburg (Germany)
Manfred Eich, Technische Univ. Hamburg-Harburg (Germany)

Published in SPIE Proceedings Vol. 8425:
Photonic Crystal Materials and Devices X
Hernán Ruy Míguez; Sergei G. Romanov; Lucio Claudio Andreani; Christian Seassal, Editor(s)

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