Apodized chirped fibre Bragg gratings for dispersion compensation in a 10 Gbit/s IM-DD semiconductor laser system

Different fibre Bragg grating dispersion compensation schemes rue studied f or a directly modulated 1550 nm single-mode semiconductor laser signal thro ugh a standard nonlinear fibre link. The laser diode is simulated by its st ochastic rate equations, while the nonlinear Schrodinger equation is used t o simulate the propagation. The optimum length for dispersion compensation after transmission through 100 km SSM fibre is studied. Pulses with a FWHM of the order of 65 ps with any linewidth-enhancement factor are reconstruct ed using pre-compensation or post-compensation with an apodized 5.75 cm chi rped fibre Bragg grating. (C) 1999 Elsevier Science B.V. All rights reserve d.