Title :
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
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;
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
DOI :
10.1109/ICTTA.2008.4530145
