Title :
Effects of Coupling Coefficient on Static Properties of Bistable QWS-DFB Semiconductor Laser Amplifiers
Author :
Aleshams, Mahmoud ; Jabbari, Masoud
Author_Institution :
Dept. of Electr. & Comput. Eng., Islamic Azad Univ., Fasa, Iran
Abstract :
We had previously analyzed the effects of trapezoidal tapered gratings on the dispersive bistable characteristics of a quarter wavelength phase-shifted distributed feedback semiconductor laser amplifier (QWS-DFB-SLA). In this paper, the effects of coupling coefficient on the static bistable characteristics of a QWS-DFB SLA with a tapered or a non-tapered grating were analyzed. Simulation results showed that any change in the coupling coefficient could change the characteristics such as the spectral range of low-threshold bistable switching and the on-off switching contrast.
Keywords :
diffraction gratings; distributed feedback lasers; optical bistability; optical phase shifters; optical switches; semiconductor optical amplifiers; bistable QWS-DFB semiconductor laser amplifiers; coupling coefficient; low-threshold bistable switching; nontapered grating; on-off switching contrast; quarter wavelength phase-shifted distributed feedback; static bistable characteristics; trapezoidal tapered gratings; Distributed amplifiers; Distributed feedback devices; Gratings; Laser feedback; Optical bistability; Optical coupling; Optical feedback; Optical signal processing; Semiconductor lasers; Semiconductor optical amplifiers; Optical bistability; Semiconductor laser amplifier;
Conference_Titel :
Advances in Computing, Control, & Telecommunication Technologies, 2009. ACT '09. International Conference on
Conference_Location :
Trivandrum, Kerala
Print_ISBN :
978-1-4244-5321-4
Electronic_ISBN :
978-0-7695-3915-7
DOI :
10.1109/ACT.2009.28
