Evolution of ultra-short optical pulses in active DFB waveguides

Chi, Jacques, Als, Adrian and Ghassemlooy, Zabih (2002) Evolution of ultra-short optical pulses in active DFB waveguides. Journal de Physique IV (Proceedings), 12 (5). pp. 187-188. ISSN 1155-4339

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Abstract

We present a time-domain study on propagation of pico-second optical pulses in active semiconductor waveguides embedded with a Bragg grating. The nonlinear effects of gain saturation, limited carrier lifetime, as well as linewidth enhancement factor are taken into account. It is theoretically shown that the effective group velocity can be significantly enhanced by the grating, resulting in the so-called superluminal transmission. Moreover, the pulse propagation and reflection behaviors are greatly influenced by such parameters as Bragg coupling strength and optical gain in the waveguide.

Item Type:	Article
Subjects:	H600 Electronic and Electrical Engineering
Department:	Faculties > Engineering and Environment > Mathematics, Physics and Electrical Engineering
Depositing User:	Becky Skoyles
Date Deposited:	25 Apr 2014 09:44
Last Modified:	12 Oct 2019 19:05
URI:	http://nrl.northumbria.ac.uk/id/eprint/16143

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