Title :
Comparison of direct and external modulation for CATV lightwave transmission at 1.5 mu m wavelength
Author :
Gnauck, A.H. ; Darcie, Thomas ; Bodeep, G.E.
Author_Institution :
AT&T Bell Labs., Holmdel, NJ, USA
Abstract :
The use of a high-power 1.5 mu m DFB laser and a linearised Ti:LiNbO3 Mach-Zehnder modulator as a transmitter in a CATV lightwave system is reported. The performance is compared with directly-modulated 1.5 mu m-wavelength DFB lasers in 60 channel transmissions over 16 km of conventional singlemode fibre. The transmission of 52 high-frequency channels is demonstrated (450-750 MHz) in anticipation of future CATV upgrades.
Keywords :
cable television; distributed feedback lasers; electro-optical devices; lithium compounds; optical links; optical modulation; titanium; 1.5 micron; 16 km; 450 to 750 MHz; 60 channel transmissions; DFB laser; LiNbO 3:Ti; direct modulation; external modulation; high-frequency channels; lightwave transmission; linearised Ti:LiNbO 3 Mach-Zehnder modulator; singlemode fibre;
Journal_Title :
Electronics Letters
DOI :
10.1049/el:19921200
