Title :
Reduction of modal noise in high-speed short-distance computer data links by an electrical signal
Author :
Hügli, Rolf ; Bates, Richard J S
Author_Institution :
IBM Thomas J. Watson Res. Center, Yorktown Heights, NY, USA
fDate :
12/1/1991 12:00:00 AM
Abstract :
Measured and calculated data on the tradeoffs between modal noise reduction and intermodulation penalty are presented. The authors quantify how a high modulation bandwidth and optical power can be obtained using conventional high-speed semiconductor lasers, by combining a sinusoidal auxiliary microwave signal with the normal data signal. How the characteristics of the laser diode determine the optimum values of the auxiliary carrier parameters is shown. Some results of optical data link simulations are presented. A 2.4-Gb/s transmission experiment shows an improvement of the bit error rate due to the microwave signal
Keywords :
data communication systems; electron device noise; intermodulation; optical links; optical modulation; 2.4 Gbit/s; bit error rate; data signal; electrical signal; high modulation bandwidth; high-speed semiconductor lasers; high-speed short-distance computer data links; intermodulation penalty; laser diode; modal noise; noise reduction; optical data link simulations; optical power; optimum values; sinusoidal auxiliary microwave signal; transmission experiment; Bandwidth; High speed optical techniques; Laser noise; Noise measurement; Noise reduction; Optical modulation; Optical noise; Power lasers; Semiconductor device noise; Semiconductor lasers;
Journal_Title :
Lightwave Technology, Journal of
