|
Descripción
|
|
|---|---|
| In this work, educational software for intuitive understanding of the basic dynamic processes of semiconductor lasers is presented. The proposed tool is addressed to the students of optical communication courses, encouraging self consolidation of the subjects learned in lectures. The semiconductor laser model is based on the well known rate equations for the carrier density, photon density and optical phase. The direct modulation of the laser is considered with input parameters which can be selected by the user. Different options for the waveform, amplitude and frequency of the injected current are available, together with the bias point. Simulation results are plotted for carrier density and output power versus time. Instantaneous frequency variations of the laser output are numerically shifted to the audible frequency range and sent to the computer loudspeakers. This results in an intuitive description of the ?chirp? phenomenon due to amplitude-phase coupling, typical of directly modulated semiconductor lasers. In this way, the student can actually listen to the time resolved spectral content of the laser output. By changing the laser parameters and/or the modulation parameters, consequent variation of the laser output can be appreciated in intuitive manner. The proposed educational tool has been previously implemented by the same authors with locally executable software. In the present manuscript, we extend our previous work to a web based platform, offering improved distribution and allowing its use to the wide audience of the web. Keywords: e-learning, educational software, java applets, optical communications, semiconductor lasers, laser rate equations model, frequency chirp. | |
|
Internacional
|
Si |
|
Nombre congreso
|
International Conference on Education and Training in Optics & Photonics |
|
Tipo de participación
|
960 |
|
Lugar del congreso
|
University of Porto, Portugal |
|
Revisores
|
Si |
|
ISBN o ISSN
|
0277-786X |
|
DOI
|
|
|
Fecha inicio congreso
|
23/07/2013 |
|
Fecha fin congreso
|
26/07/2013 |
|
Desde la página
|
1 |
|
Hasta la página
|
5 |
|
Título de las actas
|
12th International Conference on Education and Training in Optics & Photonics, ETOP 2013 |