Showing papers by "Jean Chazelas published in 2012"
TL;DR: In this paper, the authors report on performances enhancement of photoconductive switches in terms of On/Off ratio and insertion losses under microwave frequency of 40 GHz and under CW illumination at a wavelength of 800 nm.
Abstract: This paper reports on performances enhancement of photoconductive switches in term of On/Off ratio and insertion losses. The optimization parameters on which the research has been focused are gap dimensions reduction to nanometer scale. The device characterization results up to a microwave frequency of 40 GHz and under CW illumination at a wavelength of 800 nm are presented. On/Off ratio reveals a value of 13 dB at 20 GHz under 100 mW optical power.
20 citations
TL;DR: A III-V semiconductor multilayer based on surface plasmon resonance (SPR) operating at the telecom wavelength is designed and fabricated and the results have confirmed the existence of SPR associated to a sharp width response.
Abstract: In this Letter, we have designed and fabricated a III-V semiconductor multilayer based on surface plasmon resonance (SPR) operating at the telecom wavelength. Optimization of the optogeometrical parameters and the metal/semiconductor layers required for this novel structure was conducted accurately by theoretical tools using the Maxwell equations. Technological fabrication of the device and its experimental characterizations using an evanescent coupling configuration was performed: the results have confirmed the existence of SPR associated to a sharp width response. This study could be a first step in the design of new plasmonic-semiconductor-based optical devices such as modulators and switches.
5 citations