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Proceedings Paper

Properties of complex coupled DFB lasers used as narrowband amplifier
Author(s): Alberto Paradisi; Rongqing Hui; Ivo Montrosset
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Paper Abstract

We have studied the properties of distributed feedback laser diodes with real and complex coupling used as narrowband optic amplifier. The implemented numerical model is based on the transfer matrix method and allows to analyze general multielectrode laser structures. This model takes into account the interaction between optical field and carrier population in the high input power regime, the thermal effect due to current injection, the spectral dependence of optical gain and the photon and carrier density dependence on the longitudinal coordinate. We report an example of application to the study of filter tunability. With regard to complex coupled DFB lasers (CC-DFB) we compare theoretical and experimental results for the spontaneous emission spectra. CC-DFB amplifiers show quite different nonlinear behavior in the high input power regime, depending on the relative phase between index and gain gratings. These results are related to the effective linewidth enhancement factor which depends, for these structures, on both the material and the grating characteristics.

Paper Details

Date Published: 25 August 1994
PDF: 14 pages
Proc. SPIE 2212, Linear and Nonlinear Integrated Optics, (25 August 1994); doi: 10.1117/12.185113
Show Author Affiliations
Alberto Paradisi, Telebras Centro de Pesquisa e Desenvolvimento (Brazil)
Rongqing Hui, Univ. of Ottawa (United States)
Ivo Montrosset, Politecnico di Torino (Italy)


Published in SPIE Proceedings Vol. 2212:
Linear and Nonlinear Integrated Optics
Giancarlo C. Righini; David Yevick, Editor(s)

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