Title :
Dynamic mode stability analysis of surface relief VCSELs under strong RF modulation
Author :
Haglund, Å ; Gustavsson, J.S. ; Modh, P. ; Larsson, A.
Author_Institution :
Dept. of Microtechnol. & Nanosci., Chalmers Univ. of Technol., Gothenburg, Sweden
Abstract :
We demonstrate that a carefully designed fundamental-mode stabilized vertical-cavity surface-emitting laser (VCSEL) using a shallow surface relief can maintain a large sidemode suppression ratio (SMSR) under strong radio frequency modulation. A number of VCSELs emitting at 850 nm, with different surface relief and oxide aperture diameters, have been experimentally investigated. For certain combinations of these diameters, the SMSR exceeds 30 dB at 2- and 5-GHz operation, even for as much as 15 dBm of input modulation power.
Keywords :
laser cavity resonators; laser modes; laser stability; optical modulation; quantum well lasers; surface emitting lasers; 2 GHz; 5 GHz; 850 nm; dynamic mode stability; fundamental-mode stabilized laser; input modulation power; oxide aperture diameters; quantum well active region; radiofrequency modulation; shallow surface relief; sidemode suppression ratio; surface relief VCSEL; Apertures; Fiber lasers; Frequency modulation; Mirrors; Optical fiber communication; Power generation; Radio frequency; Stability analysis; Surface emitting lasers; Vertical cavity surface emitting lasers; Dynamic; modulation; single-mode; surface relief; vertical-cavity surface-emitting laser (VCSEL);
Journal_Title :
Photonics Technology Letters, IEEE
DOI :
10.1109/LPT.2005.851877
