DocumentCode :
78283
Title :
Performance Evaluation of Optically Preamplified PPM Systems With Dual-Polarized ASE Noise and Finite Extinction Ratios
Author :
Landolsi, Taha ; Elrefaie, Aly F.
Author_Institution :
American Univ. of Sharjah, Sharjah, United Arab Emirates
Volume :
62
Issue :
10
fYear :
2014
fDate :
Oct. 2014
Firstpage :
3644
Lastpage :
3651
Abstract :
Pulse position modulation (PPM) presents several advantages in free-space optical systems, unrepeatered fiber transmission, and passive optical networks. In this paper, we study the error performance in direct-detection optically preamplified M-ary PPM optical communication systems. We consider the impact of the amplifier spontaneous emission noise, as well of the finite extinction ratio of the transmitter, on the probability of bit error at the receiver. We derive expressions for the probability of bit error under both assumptions of noise polarization, namely, single- and dual-polarized amplifier noise, and compute it numerically for different symbol sizes M and extinction ratios. In addition, we present the power penalty due to the transmitter finite extinction ratio for systems with and without forward error correction. Our findings show that, in the cases of practically achievable finite extinction ratios, systems with smaller M may perform equally well when compared to those using higher values of M. We also show that there is little benefit, if any, associated with using a polarization filter in the receiver since the additional size, weight, and power consumption requirements outweigh the error performance improvement.
Keywords :
error statistics; forward error correction; light polarisation; optical filters; optical modulation; optical noise; optical receivers; optical transmitters; preamplifiers; probability; pulse position modulation; amplifier spontaneous emission noise; bit error probability; direct-detection optically preamplified M-ary PPM optical communication system; dual-polarized ASE noise; dual-polarized amplifier noise; finite extinction ratio; free-space optical system; noise polarization; optical receiver; optical transmitter; passive optical network; performance evaluation; polarization filter; power consumption; pulse position modulation; single-polarized amplifier noise; unrepeatered fiber transmission; Adaptive optics; Extinction ratio; Lead; Noise; Optical polarization; Optical receivers; Optical transmitters; Extinction ratio; probability of bit error; pulse position modulation; single- and dual-polarized noise;
fLanguage :
English
Journal_Title :
Communications, IEEE Transactions on
Publisher :
ieee
ISSN :
0090-6778
Type :
jour
DOI :
10.1109/TCOMM.2014.2359214
Filename :
6905804
Link To Document :
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