Title :
Performance of preamplified direct detection systems under influence of receiver noise
Author :
Jensen, N.G. ; Bødtker, E. ; Jacobsen, G. ; Strandberg, J.
Author_Institution :
Tele Danmark Res., Horsholm, Denmark
Abstract :
We present new results for optically preamplified direct detection systems where the receiver thermal noise is significant. The results obtained with this model is in good agreement with measured results from a system experiment at 10 Gbit/s. It is found that an optical gain of 30 dB is sufficient to keep the penalty due to thermal noise below 0.1 dB for a simple receiver consisting of a photodiode loaded with a broadband amplifier with 50-/spl Omega/ input impedance.<>
Keywords :
fibre lasers; optical fibre polarisation; optical noise; optical receivers; phase noise; photodiodes; thermal noise; 10 Gbit/s; 30 dB; broadband amplifier; input impedance; optical gain; optically preamplified direct detection systems; photodiode; preamplified direct detection systems; receiver noise; receiver thermal noise; system experiment; thermal noise; Band pass filters; Bandwidth; Optical filters; Optical noise; Optical receivers; Optical sensors; Phase noise; Preamplifiers; Semiconductor device noise; Stimulated emission;
Journal_Title :
Photonics Technology Letters, IEEE
