The Effect of Gain-Coupling on Mode Beatings in Weakly Coupled Two-Section DFB Lasers

Author

Al-Mumin, M.

Author_Institution

Coll. of Technol. Studies, Shuwaikh

fYear

2007

Firstpage

71

Lastpage

72

Abstract

The effect of gain-coupling on the predicted self- pulsations in weakly-coupled two section DFB lasers is studied and presented here. The introduction of gain-coupling 1) increases the minimum Bragg detuning needed for self- pulsations, 2) eliminates self-pulsations when the Bragg detuning exceeds the bandstop, 3) reduces the frequency tuning range of self-pulsations, 4) increases the modulation index over most of the tuning range. The study is limited to self-pulsations of the symmetrical mode beating type.

Keywords

distributed feedback lasers; laser modes; laser tuning; optical modulation; optical pulse generation; semiconductor lasers; Bragg detuning; distributed feedback lasers; frequency tuning; gain-coupling; mode beatings; modulation index; self-pulsation; symmetrical mode beating type; two-section lasers; weakly coupled lasers; Distributed feedback devices; Frequency; Laser feedback; Laser modes; Laser tuning; Masers; Microwave generation; Modulation; Optical coupling; Optical feedback; Distributed Feedback (DFB) Lasers; Gain-Coupling; Microwave Generation; Self-pulsations;

fLanguage

English

Publisher

ieee

Conference_Titel

Numerical Simulation of Optoelectronic Devices, 2007. NUSOD '07. International Conference on

Conference_Location

Newark, DE

Print_ISBN

978-1-4244-1431-4

Type

conf

DOI

10.1109/NUSOD.2007.4349029

Filename

4349029