The performance of optical time division multiplexing (OTDM) system is limi
ted by a complex combination of noise. In this paper we present a theoretic
al framework for the optical receiver in OTDM system based on the moment ge
neration function, The proposed receiver model is showed to be more accurat
e in predicting the bit error rate (BER) performance than the former ones.
Its validity is also verified by the experimental results.