Detecting ultra-fast and near-infrared pulses based on two-photon absorption in multiple quantum wells

A theoretical framework and the computational infrastructure for optical characterization of a waveguide (WG) photodetector (PD) are presented based on multiples quantum well (MQW) with a rib structure that is able to resolve a light pulse with a temporal width of 10fs. Such pulses are limited to the C-band of optical telecommunications. This pulse width is shorter than the temporal resolution limit of a commercial PD, due to the nonlinear phenomenon known as nondegenerate two-photon absorption (ND2PA). The results show the importance of the operating characteristics that affect carrier generation rate (CGR). © 2019 World Scientific Publishing Company.

• Fecha de publicación: 2019
• Institución: Universidad de Medellín
• Repositorio: Repositorio UDEM
• Idioma: eng
• OAI Identifier: oai:repository.udem.edu.co:11407/5797
• Acceso en línea: http://hdl.handle.net/11407/5797
• Palabra clave: carrier generation rate; Multiple quantum well; nondegenerate two-photon absortion; Infrared devices; Modulators; Photons; Two photon processes; Carrier generation; Computational infrastructure; Operating characteristics; Optical characterization; Optical telecommunication; Theoretical framework; Two photon; Two photon absorption; Semiconductor quantum wells
• License: http://purl.org/coar/access_right/c_16ec