Paper Info
Title
Direct detection of optical digital transmission based on polarization shift keying modulation
Abstract
Receiver structures for the direct detection of binary and multilevel digital optical modulation schemes employing the modulation of the state of polarization of light, or polarization shift keying (POLSK), are proposed and accurately analyzed, in the presence of optical amplifier ASE noise and electrical receiver noise. A comprehensive set of results shows that the performance of the binary system is approximately 3 dB better than IM/DD (on peak optical power), and stays so for a wide range of optical filter bandwidths. As a somewhat unexpected result, the multilevel schemes show a lower sensitivity to the use of a wide optical filter than the binary one. As a consequence, transmitting 3 b/symbol on a cubic constellation on the Poincare sphere brings about virtually no penalty, whereas transmitting 2 b/symbol has a better performance than binary transmission, for even relatively low values of the optical filter bandwidth. A clear explanation of this phenomenon has been found. These results suggest that narrow-bandwidth and therefore low-dispersion, multilevel, POLSK transmission could be performed with no penalty. Together with the low excitation of nonlinear effects in the fiber that polarization modulation seems to ensure, these results make POLSK schemes look promising for very-long-haul transmission
Year
DOI
Venue
1995
10.1109/49.372412
IEEE Journal on Selected Areas in Communications
Keywords
Field
DocType
digital communication,optical fibre polarisation,optical filters,optical modulation,optical noise,optical receivers,optical signal detection,IM/DD,Poincare sphere,binary optical modulation,binary system,binary transmission,cubic constellation,direct detection,electrical receiver noise,low-dispersion transmission,multilevel digital optical modulation,narrow-bandwidth transmission,nonlinear effects,optical amplifier noise,optical digital transmission,optical fiber,optical filter bandwidths,optical receiver,peak optical power,performance,polarization shift keying modulation,very-long-haul transmission
Optical amplifier,Optical power,Telecommunications,Data transmission,Optical communication,Computer science,Optical filter,Optics,Real-time computing,Modulation,Bandwidth (signal processing),Binary number
Journal
Volume
Issue
ISSN
13
3
0733-8716
Citations 
PageRank 
References 
12
1.84
5
Authors
3
Name
Order
Citations
PageRank
S. Benedetto1883167.24
R. Gaudino2628.49
P. Poggiolini321833.77