Title :
Exact evaluation of the capacity for intensity-modulated direct-detection channels with optical amplifier noises
Author_Institution :
Dept. of Electr. Eng., Nat. Taiwan Univ., Taipei, Taiwan
fDate :
4/1/2005 12:00:00 AM
Abstract :
Based on a rigorous model without approximation, the channel capacity is evaluated numerically for intensity-modulated direct-detection systems dominated by optical amplifier noises. With a discrete probability at zero intensity, the optimal input distribution is both discrete and continuously distributed. For small signal-to-noise ratio less than about 5 dB, the optimal signal is binary on-off keying.
Keywords :
channel capacity; optical fibre amplifiers; optical fibre communication; optical modulation; optical noise; binary on-off keying; channel capacity; intensity-modulated direct-detection channels; optical amplifier noises; signal-to-noise ratio; Channel capacity; Entropy; Gaussian noise; Optical amplifiers; Optical fiber amplifiers; Optical noise; Random variables; Semiconductor optical amplifiers; Signal to noise ratio; Stimulated emission; Channel capacity; direct-detection; on–off keying;
Journal_Title :
Photonics Technology Letters, IEEE
DOI :
10.1109/LPT.2005.843947
