Non-uniform Grating Effects On Dynamic Characteristics of Bistable DFB Semiconductor Laser Amplifiers

Author

Aleshams, Mahmoud ; Moravvej-Farshi, Mohammad Kazem ; Sheikhi, Mohammad Hosein

Author_Institution

Islamic Azad Univ. of Fasa, Fasa

fYear

2008

Firstpage

1

Lastpage

5

Abstract

In this paper, we have proposed a procedure to analyze transient response of bistable distributed feedback semiconductor laser amplifiers (DFB-SLAs). The results of the analysis show among bistable DFB-SLA´s with different gratings including uniform, quarter wavelength phase-shifted (QWS), and tapered, a tapered DFB-SLA has the best switching behavior. This behavior includes relaxation oscillation, switching-on time and switching-off time of the output pulse for an input pulse. The transfer matrix and the finite difference time-domain methods are utilized for simulating all results.

Keywords

distributed feedback lasers; feedback amplifiers; finite difference time-domain analysis; semiconductor lasers; bistable DFB semiconductor laser amplifiers; bistable distributed feedback; dynamic characteristics; finite difference time-domain methods; nonuniform grating effects; quarter wavelength phase-shifted; tapered DFB-SLA; transfer matrix; transient response; Distributed amplifiers; Distributed feedback devices; Finite difference methods; Gratings; Laser feedback; Pulse amplifiers; Semiconductor lasers; Semiconductor optical amplifiers; Transient analysis; Transient response; `trapezoidal tapering; distributed feedback semiconductor laser amplifier (DFB-SLA); optical dispersive bistability; switching behavior;

fLanguage

English

Publisher

ieee

Conference_Titel

Information and Communication Technologies: From Theory to Applications, 2008. ICTTA 2008. 3rd International Conference on

Conference_Location

Damascus

Print_ISBN

978-1-4244-1751-3

Electronic_ISBN

978-1-4244-1752-0

Type

conf

DOI

10.1109/ICTTA.2008.4530145

Filename

4530145