Accurate sensitivity in optically preamplified direct detection.
We present a novel model for calculating the bit error rate in optical communication systems in the case of on-off keying intensity modulation and optically preamplified direct detection. The model accounts for the intersymbol interference and is based on the Laguerre photon-count probability distribution predicted by photodetection theory. For a non-return-to-zero modulation format an accurate value of the sensitivity for a quantum-limited receiver of 33.9 photons/bit is obtained.
Martelli
Paolo
P
CoreCom, Via G. Colombo 81, 20133 Milan, Italy. martelli@corecom.it
Pietralunga
Silvia M
SM
Nicodemi
Dario
D
Martinelli
Mario
M