Title :
High Capacity/Spectral Efficiency 101.7-Tb/s WDM Transmission Using PDM-128QAM-OFDM Over 165-km SSMF Within C- and L-Bands
Author :
Qian, Dayou ; Huang, Ming-Fang ; Ip, Ezra ; Huang, Yue-Kai ; Shao, Yin ; Hu, Junqiang ; Wang, Ting
Author_Institution :
NEC Labs. America, Princeton, NJ, USA
fDate :
5/15/2012 12:00:00 AM
Abstract :
We experimentally demonstrate 101.7-Tb/s transmission over 355 km spans of standard single-mode fiber (SSMF) at a net spectral efficiency of 11 b/s/Hz. A total of 370 dense wavelength-division multiplexed (DWDM) channels spanning the optical C- and L-bands spaced at 25 GHz were used. Each 25-GHz channel were subdivided into four subbands, with each subband carrying a 73.5-Gb/s orthogonal frequency-division multiplexed (OFDM) signal modulated with polarization-division-multiplexing (PDM) 128-ary quadrature amplitude modulation (QAM) at each modulated subcarrier. This experiment was enabled by digital signal processing (DSP) pre-equalization of transmitter impairments, all Raman amplification, heterodyne coherent detection, and DSP postequalization of the channel and receiver impairments, including pilot-based phase noise compensation.
Keywords :
OFDM modulation; heterodyne detection; optical receivers; optical transmitters; quadrature amplitude modulation; signal processing; wavelength division multiplexing; 128-ary quadrature amplitude modulation; DWDM channels; OFDM signal modulation; PDM-QAM-OFDM; SSMF; WDM transmission; all Raman amplification; bit rate 101.7 Tbit/s; bit rate 73.5 Gbit/s; channel impairments; dense wavelength division multiplexing; digital signal processing; distance 165 km; distance 355 km; frequency 25 GHz; heterodyne coherent detection; high capacity/spectral efficiency; modulated subcarrier; optical C-band; optical L-band; orthogonal frequency division multiplexing; pilot-based phase noise compensation; polarization division multiplexing; pre-equalization; receiver impairments; standard single-mode fiber; transmitter impairments; Bandwidth; Digital signal processing; Frequency modulation; OFDM; Optical modulation; Optical transmitters; Capacity; Raman amplification; coherent detection; orthogonal frequency-division multiplexed (OFDM); quadrature amplitude modulation (QAM); spectral efficiency; wavelength-division multiplexed (WDM);
Journal_Title :
Lightwave Technology, Journal of
DOI :
10.1109/JLT.2012.2189096
