Title :
Cancellation of third-order intermodulation distortion in a directly modulated DFB laser and optical discriminator
Author :
Castro, J.C.S. ; Salgado, H.M. ; O´Reilly, J.J. ; Todd, C.J.
Author_Institution :
Dept. of Electron. & Electr. Eng., Univ. Coll. London, UK
fDate :
30 Oct-2 Nov 1995
Abstract :
In this paper an improved model is used, based on the theory of Volterra kernels, that includes the effect of the laser´s intrinsic distortion. Illustrative results are given that show that it is possible to achieve a significant reduction of a third-order intermodulation product (IMP). Moreover, the laser´s intrinsic FM distortion is found to be essential for the accurate modelling of the system´s IMD3 performance. As a result of this cancellation the intermodulation performance of the system can be better, than for a IM modulated laser without discriminator
Keywords :
Volterra equations; distributed feedback lasers; electro-optical modulation; frequency modulation; intermodulation distortion; laser theory; optical noise; semiconductor device models; semiconductor lasers; IM modulated laser; IMD3 performance; Volterra kernels; directly modulated DFB laser; intermodulation performance; intrinsic FM distortion; intrinsic distortion; optical discriminator; third-order intermodulation distortion cancellation; third-order intermodulation product; Frequency modulation; Intermodulation distortion; Laser modes; Laser noise; Laser theory; Nonlinear distortion; Nonlinear optics; Optical distortion; Optical modulation; Power lasers;
Conference_Titel :
Lasers and Electro-Optics Society Annual Meeting, 1995. 8th Annual Meeting Conference Proceedings, Volume 1., IEEE
Conference_Location :
San Francisco, CA
Print_ISBN :
0-7803-2450-1
DOI :
10.1109/LEOS.1995.484754
