Title :
Bragg section effects on linewidth and lineshape in 1.55-μm DBR tunable laser diodes
Author :
Signoret, P. ; Myara, M. ; Tourrenc, J.-P. ; Orsal, B. ; Monier, M.-H. ; Jacquet, J. ; Leboudec, P. ; Marin, F.
Author_Institution :
Univ. Montpellier II, France
fDate :
6/1/2004 12:00:00 AM
Abstract :
We report linewidth and lineshape measurements on 1.55-μm distributed Bragg reflector tunable laser diodes using the heterodyne method. We measure Lorentzian linewidths ranging from 3.5 to 25 MHz without any passive section injection. Biasing the Bragg section enhances the residual linewidth up to 6.2 MHz, changes the linewidth-power product, and brings an additional Gaussian lineshape. The feedback sensitivity of the overall setup is also demonstrated.
Keywords :
distributed Bragg reflector lasers; heterodyne detection; laser feedback; laser tuning; laser variables measurement; optical transmitters; semiconductor lasers; spectral line breadth; 1.55 mum; Bragg section effects; DBR laser; Gaussian lineshape; Lorentzian linewidths; distributed Bragg reflector laser; feedback sensitivity; heterodyne method; tunable laser diodes; Diode lasers; Distributed Bragg reflectors; Distributed feedback devices; Laser feedback; Optical feedback; Optical filters; Optical mixing; Optical sensors; Optical transmitters; Tunable circuits and devices;
Journal_Title :
Photonics Technology Letters, IEEE
DOI :
10.1109/LPT.2004.826707
