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Proceedings Paper

Modulation of relaxation oscillation frequency of a DFB laser by using direct detection
Author(s): A. Baylón-Fuentes; P. Hernández-Nava; A. García-Juárez; I. E. Zaldívar-Huerta; J. Rodríguez-Asomoza; G. Aguayo-Rodríguez; R. Gómez-Colín
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Paper Abstract

Relaxation oscillation frequency is produced when a laser is operated in the low laser threshold current region. In this operation region, a semiconductor laser shows a smooth curve, where we can observe uncertainty into defining the onset of laser oscillation. Relaxation oscillations in the laser intensity can be seen as sidebands on both sides of the main laser line. In this context, a communication system by using a relaxation oscillation frequency as an information carrier is proposed in this paper. The experimental setup is based on operation principle of direct detection, where the obtained microwave signal at the output of a fast photodetector is located on C band and it is modulated with an analog NTSC TV signal.

Paper Details

Date Published: 24 January 2011
PDF: 8 pages
Proc. SPIE 7958, Broadband Access Communication Technologies V, 79580E (24 January 2011); doi: 10.1117/12.875763
Show Author Affiliations
A. Baylón-Fuentes, Instituto Nacional de Astrofísica, Óptica y Electrónica (Mexico)
P. Hernández-Nava, Instituto Nacional de Astrofísica, Óptica y Electrónica (Mexico)
A. García-Juárez, Univ. de Sonora (Mexico)
I. E. Zaldívar-Huerta, Instituto Nacional de Astrofísica, Óptica y Electrónica (Mexico)
J. Rodríguez-Asomoza, Univ. de las Américas Puebla (Mexico)
G. Aguayo-Rodríguez, Instituto Nacional de Astrofísica, Óptica y Electrónica (Mexico)
R. Gómez-Colín, Univ. de Sonora (Mexico)

Published in SPIE Proceedings Vol. 7958:
Broadband Access Communication Technologies V
Benjamin Dingel; Raj Jain; Katsutoshi Tsukamoto, Editor(s)

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