Abstract
Significant deviations from Gaussian statistics have been observed in single-mode-fiber systems whose performance is limited by laser phase-induced intensity noise. When both thermal (Gaussian) noise and phase-induced intensity noise are present at the input of the receiver’s decision circuit, the electrical signal-to-noise ratio required to achieve an error rate of 10-9 will vary from 22 dB (pure thermal noise) to only 9.1 dB (pure phase-induced noise). This anomalous behavior is due to the inherent nonlinearity of the interferometric phase-to-intensity conversion process. Gaussian statistics are quickly approached as the thermal noise becomes dominant, or when, due to electrical bandwidth limitations, the detection system filters out significant high-frequency components of the phase-induced intensity noise.
Original language | English |
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Pages (from-to) | 2055-2058 |
Number of pages | 4 |
Journal | Journal of Lightwave Technology |
Volume | 7 |
Issue number | 12 |
DOIs | |
State | Published - Dec 1989 |