Title :
Maximum-likelihood optimal-sampling-phase estimation for ultra-high-sensitivity optically preamplified duobinary receivers
Author :
Moller, L. ; Chongjin Xie ; Ryf, R. ; Xiang Liu ; Xing Wei
Author_Institution :
Lucent Technol., Bell Labs., Holmdel, NJ, USA
Abstract :
This paper describes the demonstration of a novel method for detecting optical duobinary signals. Oversampling in combination with maximum-likelihood estimation-based data processing of the optical-to-electronic converted signal results in a record sensitivity for an optically preamplified receiver. The concept is investigated at 10 Gb/s and allows data recovery at bit-error rates of 1/spl times/10/sup -9/ and 1/spl times/10/sup -3/ with a receiver sensitivity of better than -39.5 dBm and an optical signal-to-noise ratio (OSNR) of only 7.8 dB, respectively.
Keywords :
maximum likelihood estimation; optical fibre communication; optical information processing; optical receivers; bit-error rates; data processing; data recovery; duobinary receivers; maximum-likelihood estimation; optical duobinary signals; optical signal-to-noise ratio; optical-to-electronic converted signal; optically preamplified receivers; optimal-sampling-phase estimation; ultrahigh-sensitivity receivers; Data processing; Maximum likelihood detection; Maximum likelihood estimation; Optical detectors; Optical receivers; Optical recording; Optical sensors; Signal detection; Signal processing; Signal to noise ratio; Duobinary; jitter mitigation; maximum-likelihood estimation; receiver (RX) sensitivity; sampling phase;
Journal_Title :
Lightwave Technology, Journal of
DOI :
10.1109/JLT.2004.840360
