Title :
Analysis of optical-injected distributed feedback lasers using complex optical low-coherence reflectometry
Author :
Palavicini, Carlos ; Campuzano, Gabriel ; Thedrez, Bruno ; Jaouën, Yves ; Gallion, Philippe
Author_Institution :
Departement Commun. et Electronique, Ecole Nat. Superieure des Telecommun., Paris, France
Abstract :
A theoretical and experimental investigation of reflectograms obtained for a distributed feedback (DFB) semiconductor laser using a phase-controlled high-resolution optical low-coherence reflectometer was carried out, yielding the effective group refractive index and its variation above threshold, the cavity internal loss, as well as the grating coupling factor of a multiquantum-well DFB laser. In addition, direct measurements of the injection-induced complex-modal index changes are presented for the first time.
Keywords :
distributed feedback lasers; refractive index; semiconductor lasers; cavity internal loss; complex optical low-coherence reflectometry; effective group refractive index; grating coupling factor; injection-induced complex-modal index changes; optical-injected distributed feedback lasers; semiconductor laser; Distributed feedback devices; Laser feedback; Laser theory; Optical feedback; Optical losses; Optical refraction; Optical variables control; Reflectometry; Refractive index; Semiconductor lasers;
Journal_Title :
Photonics Technology Letters, IEEE
DOI :
10.1109/LPT.2003.819734
