Title :
Coherent multichannel broadcast network
Author :
Sessa, W.B. ; Welter, R. ; Maeda, M.W. ; Wagner, R.E. ; Vodhanel, R.S. ; Laming, R.I.
Author_Institution :
Bellcore, Red Bank, NJ, USA
Abstract :
The design and performance of a 16-channel coherent broadcast network at 155.52 Mb/s are reported. It uses packaged 1.54-μm DFB (distributed feedback) lasers stabilized at absolute frequencies and a tunable, polarization-insensitive receiver. System experiments show that a power penalty of 0.3 dB is incurred at a channel spacing of 8.5 GHz due to adjacent channel crosstalk. Results using an erbium-doped fiber amplifier gave a fiber-to-fiber gain of 22 dB and an amplifier dynamic range of 15 dB for the entire transmission spectrum. This made possible the distribution of sixteen 155-Mb/s signals to one of 256 end-users at a distance of 102 km
Keywords :
broadband networks; broadcasting; crosstalk; digital communication systems; optical communication equipment; optical links; 1.54 micron; 102 km; 155 Mbit/s; 155.2 Mbit/s; 16-channel; 22 dB; DFB laser; Er doped fibre amplifier; adjacent channel crosstalk; coherent broadcast network; distributed feedback; multichannel broadcast network; polarization-insensitive receiver; tunable receiver; Broadcasting; Distributed feedback devices; Erbium-doped fiber amplifier; Erbium-doped fiber lasers; Frequency; Laser feedback; Laser stability; Packaging; Polarization; Tunable circuits and devices;
Conference_Titel :
Global Telecommunications Conference and Exhibition 'Communications Technology for the 1990s and Beyond' (GLOBECOM), 1989. IEEE
Conference_Location :
Dallas, TX
DOI :
10.1109/GLOCOM.1989.63992
