Title :
Mode partition noise in 850 nm VCSELs
Author :
Tayahi, M.B. ; Lanka, S. ; Rawat, B. ; Guilfoyle, P.
Author_Institution :
Dept. of Electr. Eng., Univ. of Nevada, NV
fDate :
4/1/2007 12:00:00 AM
Abstract :
In high-speed 850 nm vertical cavity surface emitting lasers designed for 10 G Ethernet over 300 m of multimode fibre, mode partition noise (MPN) can impair the performance of the transmission link where the power budget is limited. A simple and practical method to evaluate the Ogawa k-factor from the power penalty is presented due to MPN using free space optical filters to vary the laser root mean square spectral width. k values that varied from 0.3 to 0.45 is reported. In addition, the previously reported improvement in power penalty is confirmed in the presence of polarisation mode selective filtering
Keywords :
laser modes; laser noise; optical fibre communication; optical transmitters; semiconductor lasers; surface emitting lasers; 10 G Ethernet; 10.125 Gbit/s; 850 nm; Ogawa k-factor; VCSEL; free space optical filters; laser root mean square spectral width; mode partition noise; multimode fibre; polarisation mode selective filtering; power penalty; vertical cavity surface emitting lasers;
Journal_Title :
Optoelectronics, IET
DOI :
10.1049/iet-opt:20060018
