Title :
Comparison of harmonic and intermodulation distortions of directly modulated interband lasers and quantum cascade lasers
Author :
Yong, Kelvin S. C. ; Haldar, Manas K. ; Webb, Jeffrey F.
Author_Institution :
Fac. of Eng., Comput. & Sci., Swinburne Univ. of Technol., Kuching, Malaysia
Abstract :
In this paper, a comparison of second harmonic and two-carrier intermodulation distortion of three near infrared interband lasers and three mid-infrared quantum cascade lasers is reported. These distortions arise from direct intensity modulation of semiconductor lasers. To make the comparison, the distortions in dBs are plotted against the frequency of the RF subcarrier. The lasers are considered to have the same DC optical power output and optical modulation depth.
Keywords :
intensity modulation; optical modulation; quantum cascade lasers; DC optical power output; direct intensity modulation; directly modulated interband lasers; harmonic distortions; intermodulation distortions; optical modulation depth; quantum cascade lasers; semiconductor lasers; two-carrier intermodulation distortion; Harmonic distortion; Intermodulation distortion; Laser noise; Optical distortion; Quantum cascade lasers; Radio frequency; direct intensity modulation; interband lasers; quantum cascade lasers; second harmonic distortion; two-carrier intermodulation distortion;
Conference_Titel :
Photonics (ICP), 2014 IEEE 5th International Conference on
Conference_Location :
Kuala Lumpur
DOI :
10.1109/ICP.2014.7002332
