Title :
Effects of Homodyne Crosstalk on Dual-Polarization QPSK Signals
Author_Institution :
SiBEAM, Sunnyvale, CA, USA
Abstract :
The exact error probability of quadriphase shift keying (QPSK) signals with homodyne crosstalk is derived analytically. With respect to the signal, homodyne crosstalk may be from the same, the worst, or random polarization. Valid for many interferers, Gaussian model overestimates the SNR penalty for homodyne crosstalk from a single interferer. For 1-dB SNR penalty, QPSK signal may tolerate up to a crosstalk ratio of -16.3 dB from a single interferer from the worst polarization alignment.
Keywords :
Gaussian distribution; error statistics; light interference; light interferometers; light polarisation; optical crosstalk; optical information processing; optical noise; quadrature phase shift keying; Gaussian model; SNR penalty; dual-polarization QPSK signals; exact error probability; homodyne crosstalk; quadriphase shift keying signals; random polarization; single interference; Crosstalk; Error probability; Optical crosstalk; Optical signal processing; Phase shift keying; Signal to noise ratio; Error probability; homodyne crosstalk; quadri phase shift keying (QPSK);
Journal_Title :
Lightwave Technology, Journal of
DOI :
10.1109/JLT.2010.2095830
