Title :
Modelling of interferometric crosstalk in optical networks
Author :
Moura, Luis ; Karafolas, Nikos ; Lane, Phil ; Hill, Alan ; O´Reilly, John
Author_Institution :
Dept. of Electron. & Electr. Eng., Univ. Coll. London, UK
Abstract :
Interferometric crosstalk due to imperfect component performance has been shown to have a dramatic impact on performance in optical networks. In this paper we assess the impact of incoherent interferometric crosstalk in terms of BER and power penalty (PP). We use a rigorous formulation based on the modified Chernoff bound (MCB) which provides an accurate upper bound on the BER and on the PP. We compare these results with the Gaussian approximation (GA) and identify the scenario for which the GA can be applied with confidence. The influence of the decision threshold level is also examined and we will show that optimisation of the threshold can provide up to about 5 dB of crosstalk isolation
Keywords :
error statistics; light interferometry; optical crosstalk; optical fibre networks; optical noise; optimisation; BER; Gaussian approximation; bit error rate; crosstalk isolation; decision threshold level; imperfect component performance; incoherent interferometric crosstalk; modified Chernoff bound; optical networks; optimisation; power penalty; upper bound; Bit error rate; Delay; Frequency; Intelligent networks; Optical crosstalk; Optical fiber networks; Optical interferometry; Optical noise; Optical receivers; Wavelength division multiplexing;
Conference_Titel :
Global Telecommunications Conference, 1996. GLOBECOM '96. 'Communications: The Key to Global Prosperity
Conference_Location :
London
Print_ISBN :
0-7803-3336-5
DOI :
10.1109/GLOCOM.1996.594384
