Title :
Recursive simulation models of the semiconductor laser modulation characteristics for accurate performance evaluation of coherent optical CPFSK systems
Author :
Roudas, Ioannis ; Jaouën, Yves ; Prado, Jacques ; Vallet, Robert ; Gallion, Philippe
Author_Institution :
Bellcore, Red Bank, NJ, USA
fDate :
11/1/1995 12:00:00 AM
Abstract :
Modeling of the semiconductor laser nonuniform FM response and residual IM modulation is essential for the computer-aided design of coherent optical communication systems. This paper presents an accurate simulation model, in which the FM and IM responses are represented by recursive digital filters derived directly from measurements. A comparison with previous models of the bibliography reveals the advantages of the current approach. The proposed modeling procedure is applied in the case of a single-electrode DFB laser. This DFB model, in combination with a semi-analytical technique for the evaluation of the error probability, is used to study the influence of the modulation characteristics on the performance of a coherent heterodyne CPFSK system with differential receiver operating at 1 Gb/s. Theoretical and experimental results are in excellent agreement
Keywords :
distributed feedback lasers; electro-optical modulation; frequency modulation; frequency shift keying; laser theory; optical transmitters; recursive filters; semiconductor device models; semiconductor lasers; 1 Gbit/s; FM response; IM response; accurate performance evaluation; coherent heterodyne CPFSK system; coherent optical CPFSK systems; coherent optical communication systems; computer-aided design; differential receiver; error probability; recursive digital filters; recursive simulation models; residual IM modulation; semi-analytical technique; semiconductor laser modulation characteristics; semiconductor laser nonuniform FM response; simulation model; single-electrode DFB laser; Computational modeling; Frequency modulation; Laser modes; Laser theory; Optical feedback; Optical filters; Optical mixing; Optical receivers; Optical transmitters; Semiconductor lasers;
Journal_Title :
Lightwave Technology, Journal of
