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Proceedings Paper

Effect of input pulse shape on FSK optical coherent communication system
Author(s): Mehdi Shadaram; Eugene Britto John
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Paper Abstract

Directly modulated semiconductor lasers exhibit a dynamic wavelength shift arising from the gain-induced variations of the laser refractive index. It is an accepted fact that the input current pulse shape plays an important role in the frequency chirping (wavelength shift) of directly modulated semiconductor lasers. This paper gives large signal analysis of the dynamic frequency chirping due to the gain-induced variation of the laser refractive index for four different input current pulse shapes. The laser is biased above threshold for the analysis. The rate equations are solved numerically and the frequency chirping and carrier density variations for the four input current pulse shapes are compared.

Paper Details

Date Published: 1 January 1991
PDF: 8 pages
Proc. SPIE 1365, Components for Fiber Optic Applications V, (1 January 1991); doi: 10.1117/12.24667
Show Author Affiliations
Mehdi Shadaram, Univ. of Texas/El Paso (United States)
Eugene Britto John, Univ. of Texas/El Paso (United States)


Published in SPIE Proceedings Vol. 1365:
Components for Fiber Optic Applications V
Paul M. Kopera, Editor(s)

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