DocumentCode :
1551463
Title :
Transmission of 9 ,\\times, 138 Gb/s Prefiltered PM-8QAM Signals Over 4000 km of Pure Silica-Core Fiber
Author :
Cigliutti, Roberto ; Torrengo, Enrico ; Bosco, Gabriella ; Caponio, Nunzio Paolo ; Carena, Andrea ; Curri, Vittorio ; Poggiolini, Pierluigi ; Yamamoto, Yoshinori ; Sasaki, Takashi ; Forghieri, Fabrizio
Author_Institution :
Dipt. di Elettron., Politec. di Torino, Turin, Italy
Volume :
29
Issue :
15
fYear :
2011
Firstpage :
2310
Lastpage :
2318
Abstract :
We experimentally demonstrated the application in ultrahigh spectral density long-haul optical systems of tight prefiltering to generate “quasi-Nyquist wavelength division multiplexing” signals together with the use of pure-silica core fiber and hybrid Raman/erbium-doped fiber amplification. The transmission of polarization-multiplexed quadrature-amplitude modulation with 8 symbols (PM-8QAM) at 138 Gb/s and channel spacing equal to 1.22 × (symbol rate) was demonstrated, reaching over 4000 km at net spectral efficiency (SE) of 4.1 b/s/Hz. In our experiment, we achieved to date highest per-carrier symbol rate (23 Gbaud), SE (4.1 b/s/Hz), and (SE) × (distance) product (16655 b/s/Hz·km) for non-orthogonal frequency-division multiplexing transmission using PM-8QAM modulation.
Keywords :
OFDM modulation; erbium; optical fibre amplifiers; optical modulation; quadrature amplitude modulation; wavelength division multiplexing; bit rate 138 Gbit/s; hybrid Raman erbium-doped fiber amplification; long-haul optical systems; non-orthogonal frequency-division multiplexing transmission; polarization-multiplexed quadrature-amplitude modulation; prefiltered PM-8QAM signals; pure silica-core fiber; quasi-Nyquist wavelength division multiplexing; size 4000 km; spectral efficiency; ultrahigh spectral density; Bit error rate; Crosstalk; Modulation; Optical attenuators; Optical crosstalk; Optical transmitters; Wavelength division multiplexing; Coherent detection; Nyquist wavelength division multiplexing (Nyquist-WDM); polarization multiplexing; polarization-multiplexed quadrature-amplitude modulation with 8 symbols (PM-8QAM); pure silica-core fiber (PSCF);
fLanguage :
English
Journal_Title :
Lightwave Technology, Journal of
Publisher :
ieee
ISSN :
0733-8724
Type :
jour
DOI :
10.1109/JLT.2011.2159193
Filename :
5871990
Link To Document :
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