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

fYear

2009

fDate

28-29 Dec. 2009

Firstpage

71

Lastpage

74

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;

fLanguage

English

Publisher

ieee

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

Type

conf

DOI

10.1109/ACT.2009.28

Filename

5376841