Comparison of 8 × 112 Gb/s PS-QPSK and PDM-QPSK signals over transoceanic distances
نویسندگان
چکیده
منابع مشابه
PDM-iRZ-QPSK vs. PS-QPSK at 100 Gbit/s over dispersion-managed links.
We compare by simulation the performance of 100 Gbit/s PDM-iRZ-QPSK and PS-QPSK transmission both in homogeneous and hybrid QPSK/OOK DM links. We detail the reasons of the overall performance investigating each nonlinear effect (SPM, XPM and XPolM) individually. Moreover, we compare the accuracy of the noise loading method with the more realistic use of noisy in-line amplifiers. Results shows t...
متن کاملExperimental investigation and digital compensation of DGD for 112 Gb/s PDM-QPSK clock recovery.
For asynchronous sampled systems such as Polarization Division Multiplexed Quadrature Phase Shift Keying, (PDM-QPSK), phase and frequency of the sampling clock is typically not synchronized to the data symbols. Therefore, timing adjustment, so called clock recovery and interpolation, must be performed in digital domain prior to signal demodulation in order to avoid cycle slips. For the first ti...
متن کاملkm Transmission of 100 GHz Spaced , 8 × 495 - Gb / s PDM Time - Domain Hybrid QPSK - 8 QAM Signals
Employing time-domain hybrid QPSK-8QAM and training-assisted phase recovery, we successfully transmitted eight 495-Gb/s DWDM signals at net 4.125 bit/s/Hz spectral efficiency (SE) over 120×100km of ultra-large-area fiber, achieving a record SE⋅distance product of 49500 (bit/s/Hz)⋅km. 1. Introduction In response to the continuing bandwidth demand growth at 30 to 40% year-over-year, carriers are ...
متن کاملTransmission of PM-QPSK and PS-QPSK with different fiber span lengths.
We perform experimental and numerical investigations of the transmission reach of polarization-switched QPSK (PS-QPSK) and polarization-multiplexed QPSK (PM-QPSK) for three different fiber span lengths: 83, 111 and 136 km. In the experimental comparison we investigate the performance of PS-QPSK at 20 Gbaud and PM-QPSK at the same bit rate (60 Gbit/s) and at the same symbol rate, both the single...
متن کاملNonlinear Effects Compensation in Optical Coherent PDM-QPSK Systems
Nonlinear effects has been appointed as the main limitation in coherent optical fiber transmission. Digital BackPropagation algorithms and Maximum Likelihood Sequence Estimation are two of the current studied methods to cope with such impairment and extend the systems maximum reach. In this article, we analyzed both methods in a 112 Gb/s Dual Polarization Quadrature Phase Shifting Keying (DP-QP...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: Optics Express
سال: 2011
ISSN: 1094-4087
DOI: 10.1364/oe.19.024370