TY - JOUR
T1 - Roll-off factor dependence of Nyquist pulse transmission
AU - Harako, Koudai
AU - Suzuki, Daiki
AU - Hirooka, Toshihiko
AU - Nakazawa, Masataka
N1 - Funding Information:
JSPS Grant-in-Aid for Specially Promoted Research (26000009).
Publisher Copyright:
© 2016 Optical Society of America.
PY - 2016/9/5
Y1 - 2016/9/5
N2 - We evaluate the dependence of system performance on the roll-off factor, α, of a Nyquist pulse in a single-channel 1.28 Tbit/s-525 km transmission both experimentally and analytically. Low α values are preferable in terms of spectral efficiency and tolerance to chromatic dispersion and polarization-mode dispersion, while a strong overlap with neighboring symbols results in larger nonlinear impairments. On the other hand, a Nyquist pulse with high α values also suffers from nonlinearity due to higher peak power. As a result, we found experimentally that the optimum α value is 0.4-0.6, which agrees well with the analysis.
AB - We evaluate the dependence of system performance on the roll-off factor, α, of a Nyquist pulse in a single-channel 1.28 Tbit/s-525 km transmission both experimentally and analytically. Low α values are preferable in terms of spectral efficiency and tolerance to chromatic dispersion and polarization-mode dispersion, while a strong overlap with neighboring symbols results in larger nonlinear impairments. On the other hand, a Nyquist pulse with high α values also suffers from nonlinearity due to higher peak power. As a result, we found experimentally that the optimum α value is 0.4-0.6, which agrees well with the analysis.
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U2 - 10.1364/OE.24.021986
DO - 10.1364/OE.24.021986
M3 - Article
AN - SCOPUS:84990058967
SN - 1094-4087
VL - 24
SP - 21986
EP - 21994
JO - Optics Express
JF - Optics Express
IS - 19
ER -