Title :
2.5 Gbit/s directly-modulated fibre grating laser for optical networks
Author :
Timofeev, F.N. ; Bayvel, P. ; Mikhailov, V. ; Gambini, P. ; Midwinter, J.E. ; Lavrova, O.A. ; Wyatt, R. ; Kashyap, R. ; Robertson, M. ; Campbell, R.J.
Author_Institution :
Dept. of Electron. Eng., Univ. Coll. London, UK
Abstract :
Densely spaced wavelength-routed optical transport and access networks will require low cost, stable, low chirp narrow linewidth lasers operating on precisely specified wavelengths. Directly modulated semiconductor lasers with external fibre grating (FGL) can potentially satisfy the above requirements. Although 10 Gbit/s externally modulated soliton transmission using a modelocked FGL over 27000 km was reported, wavelength chirp and transmission performance of directly modulated FGLs have not been investigated at bit-rates higher than 155 Mbit/s for NRZ transmission. In this paper we report on the very low chirp performance of a directly modulated FGL at 2.5 Gbit/s, for the first time. Transmission over 300 km in standard fibre and >10000 km in dispersion shifted fibre was demonstrated
Keywords :
fibre lasers; 10000 km; 2.5 Gbit/s; 300 km; BH amplifier chip; angled facet semiconductor chip; densely spaced wavelength-routed networks; directly-modulated fibre grating laser; dispersion shifted fibre; optical transport and access networks; penalty-free transmission; recirculating fibre loop; standard fibre; very low chirp performance;
Conference_Titel :
Optical Fibre Gratings (Digest No. 1997/037), IEE Colloquium on
Conference_Location :
London
DOI :
10.1049/ic:19970245
