Title :
Fiber Nonlinearity Impact on Direct-Detection Block-Wise Phase Switched Systems
Author :
Jiayuan He ; An Li ; Xi Chen ; Shieh, William
Author_Institution :
Dept. of Electr. & Electron. Eng., Univ. of Melbourne, Melbourne, VIC, Australia
Abstract :
We carry out comprehensive analysis on the fiber nonlinearity impact on the block-wise phase switching (BPS) direct detection (DD) systems. We find that the degenerate four-wave mixing components produced by the interaction between the main carrier and the subcarriers are intrinsically compensated through the direct detection process. For a 100-Gb/s BPS-DD system over 80-km standard single-mode-fiber link, the optimum launch power is found to be 5 dBm, and the optimum carrier-to-signal power ratio is 12 dB. For a single-channel BPS-DD system, the fiber nonlinearity impairment is reduced when low-dispersion fiber is used. However, for a multi-channel BPS-DD system, the nonlinearity noise induced by the crosstalk among the channels is enhanced when the chromatic dispersion of the fiber link decreases.
Keywords :
Internet; OFDM modulation; optical fibre networks; telecommunication traffic; Internet traffic drives; bit rate 100 Gbit/s; coherent optical orthogonal frequency division multiplexing; direct detection orthogonal frequency division multiplexing systems; direct detection process; direct-detection block-wise phase switched systems; fiber link chromatic dispersion; fiber nonlinearity impact; fiber nonlinearity impairment; four-wave mixing components; low-dispersion fiber; multichannel BPS-DD system; nonlinearity noise; offset OFDM systems; optimum carrier-to-signal power ratio; optimum launch power; single-channel BPS-DD system; standard single-mode-fiber link; ultra-high capacity communication systems; OFDM; Optical fiber dispersion; Optical fiber networks; Optical fibers; Optical polarization; Capacity; direct detection orthogonal frequency division multiplexing (DD–OFDM) systems; nonlinearity;
Journal_Title :
Lightwave Technology, Journal of
DOI :
10.1109/JLT.2014.2312999
