Numerical Analysis of SHB Effects in Laterally-Coupled Distributed Feedback (LC-DFB) Lasers

• Main Authors: M. Seifouri, A. Faraji, F. Shahshahani
• Format: Article
• Language: English
• Published: D. G. Pylarinos 2012-10-01
• Series: Engineering, Technology & Applied Science Research
• Subjects: Laterally coupled distributed feedback laser; spatial hole burning; rate equation; coupled wave equation; transfer matrix method
• Online Access: http://www.etasr.com/index.php/ETASR/article/download/196/136

In this paper the stability of Laterally-Coupled Distributed Feedback (LC-DFB) Lasers against the Spatial Hole Burning (SHB) effect is analyzed theoretically. The stability of the laser structure is evaluated using the flatness parameter F. It is shown that the LC-DFB lasers are stable in a wide range of different values ​​of ridge width and amplitude grating. The stability is sustained with increasing injection current. The results show that the flatness parameter is minimal for certain values ​​of the amplitude grating. The numerical calculations have been done by coupled wave and carrier rate equations on the basis of the transfer matrix method (TMM).