RECURSIVE SIMULATION-MODELS OF THE SEMICONDUCTOR-LASER MODULATION CHARACTERISTICS FOR ACCURATE PERFORMANCE EVALUATION OF COHERENT OPTICAL CPFSK SYSTEMS
I. Roudas et al., RECURSIVE SIMULATION-MODELS OF THE SEMICONDUCTOR-LASER MODULATION CHARACTERISTICS FOR ACCURATE PERFORMANCE EVALUATION OF COHERENT OPTICAL CPFSK SYSTEMS, Journal of lightwave technology, 13(11), 1995, pp. 2258-2269
Modeling of the semiconductor laser nonuniform FM response and residua
l IM modulation is essential for the computer-aided design of coherent
optical communication systems, This paper presents an accurate simula
tion model, in which the FM and IM responses are represented by recurs
ive digital filters derived directly from measurements, A comparison w
ith previous models of the bibliography reveals the advantages of the
current approach, The proposed modeling procedure is applied in the ca
se of a single-electrode DFB laser, This DFB model, in combination wit
h a semi-analytical technique for the evaluation of the error probabil
ity, is used to study the influence of the modulation characteristics
on the performance of a coherent heterodyne CPFSK system with differen
tial receiver operating at 1 Gb/s, Theoretical and experimental result
s are in excellent agreement.