Title :
132.2-Gb/s PDM-8QAM-OFDM Transmission at 4-b/s/Hz Spectral Efficiency
Author :
Jansen, Sander L. ; Al Amin, Abdullah ; Takahashi, Hidenori ; Morita, Itsuro ; Tanaka, Hideaki
Author_Institution :
KDDI R&D Labs., Saitama
fDate :
6/15/2009 12:00:00 AM
Abstract :
In this letter, we investigate 132.2-Gb/s polarization-division-multiplexed orthogonal frequency-division-multiplexing (PDM-OFDM) transmission at 25-GHz channel spacing. We show that the nonlinear tolerance is dependent on the OFDM symbol length. By using 14.4-ns-long OFDM symbols, 7 times 132.2-Gb/s transmission of PDM-OFDM at 4-b/s/Hz spectral efficiency is reported over 1300-km standard single-mode fiber.
Keywords :
OFDM modulation; channel spacing; frequency division multiplexing; nonlinear optics; optical fibre communication; optical fibre polarisation; quadrature amplitude modulation; OFDM symbol length; PDM-QAM-OFDM transmission; bit rate 132.2 Gbit/s; channel spacing; distance 1300 km; frequency 25 GHz; nonlinear tolerance; orthogonal frequency-division-multiplexing; polarization-division-multiplexing; single-mode fiber; spectral efficiency; Chromatic dispersion compensation; fast Fourier transform (FFT); long-haul transmission; orthogonal frequency-division multiplexing (OFDM);
Journal_Title :
Photonics Technology Letters, IEEE
DOI :
10.1109/LPT.2009.2018637
