Title :
The Effect of Gain-Coupling on Mode Beatings in Weakly Coupled Two-Section DFB Lasers
Author_Institution :
Coll. of Technol. Studies, Shuwaikh
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;
Conference_Titel :
Numerical Simulation of Optoelectronic Devices, 2007. NUSOD '07. International Conference on
Conference_Location :
Newark, DE
Print_ISBN :
978-1-4244-1431-4
DOI :
10.1109/NUSOD.2007.4349029
