Performance Limitations of an Optical IM-DD Transmission System Due to Polarization Mode Dispersion
ISLAM,M SAIFUL
Department of Electrical and Electronic Engineering, Bangladesh University of Engineering and Technology (BUET), Dhaka-1000, Bangladesh
Satya Prasad,Majumder
Bangladesh University of Engineering and Technology (BUET)
M. Rezwan,Khan
United International University
Session name: Communication Vulnerabilities Assessments
Polarization mode dispersion (PMD) in single mode fibers imposes a potential limit to high capacity long distance optical communication systems and could contribute to bit error rate (BER) deterioration, performance variation or system fading even at moderate bit rate. An analytical approach is developed to evaluate the impact of polarization mode dispersion on the average BER performance of an IM-DD optical transmission system considering Maxwellian distribution for the differential group delay (DGD). The results show that the performance of an IM-DD system suffers power penalty of 0.27 dB, 0.45 dB and 2.4 dB corresponding to mean DGD of 20 ps, 35 ps and 40 ps respectively at a BER of 10-9 operating at a bit rate of 10 Gb/s. Furthermore, at increased values of the mean DGD there occur BER floors above 10-9 which can not be lowered by further increasing the signal power. It is noticed that BER floors occur at about 2x10-9, 10-7 and 10-5 corresponding to mean DGD of 45 ps, 50 ps and 60 ps respectively at 10Gb/s. The effect of PMD is found to be more detrimental at higher bit rates.
M. S. Islam was born in Thakurgaon, Bangladesh, on February 21, 1965. He received the B. Sc. in Electrical and Electronic Engineering degree from the Bangladesh University of Engineering and Technology, Bangladesh in 1989 and M.Sc. in Computer Science and Engineering from Shanghai University, China, in 1997. He is currently pursuing the Ph. D. degree at the Bangladesh University of Engineering and Technology, Bangladesh.
His main research interest is the performance evaluation of long-haul fiber-optic communication system