400G WDM Transmission on the 50 GHz Grid for Future Optical Networks
- 16 July 2012
- journal article
- Published by Institute of Electrical and Electronics Engineers (IEEE) in Journal of Lightwave Technology
- Vol. 30 (24), 3779-3792
- https://doi.org/10.1109/JLT.2012.2206013
Abstract
We review the recent technology advancements related to the transmission of 400Gb/s, wavelength-division-multiplexed channels for optical networks based on the standard 50 GHz grid. We discuss the enabling modulation, coding, and line system technologies, as well as the existing challenges. Specifically, these technologies include time-domain hybrid 32-64 quadrature amplitude modulation, nearly ideal digital Nyquist pulse shaping, improved channel bandwidth management methods such as end-to-end carrier frequency control and distributed compensation of filtering effects arising from reconfigurable optical add/drop multiplexers, distributed Raman amplification, and powerful forward error correction. We demonstrate 400G transmission on the standard 50 GHz grid over meaningful transmission reach for regional and metropolitan applications. However, further studies are needed to fully understand the potential for meeting the requirements of long-haul transmission applications.Keywords
This publication has 20 references indexed in Scilit:
- Transmission Performance of a 485-Gb/s CO-OFDM Superchannel With PDM-16QAM Subcarriers Over ULAF and SSMF-Based LinksIEEE Photonics Technology Letters, 2011
- 64-Tb/s, 8 b/s/Hz, PDM-36QAM Transmission Over 320 km Using Both Pre- and Post-Transmission Digital Signal ProcessingJournal of Lightwave Technology, 2011
- Experimental characterization of Gaussian-distributed nonlinear distortionsPublished by Optica Publishing Group ,2011
- Experimental Comparison of 32- and 64-QAM Constellation Shapes on a Coherent PDM Burst Mode Capable SystemPublished by Optica Publishing Group ,2011
- Selective Post-Compensation of Nonlinear Impairments in Polarization-Division Multiplexed WDM Systems With Different Channel GranularitiesIEEE Journal of Quantum Electronics, 2010
- An Improved Feed-Forward Carrier Recovery Algorithm for Coherent Receivers With $M$-QAM Modulation FormatIEEE Photonics Technology Letters, 2010
- Multi-Level, Multi-Dimensional Coding for High-Speed and High-Spectral-Efficiency Optical TransmissionJournal of Lightwave Technology, 2009
- Hardware-Efficient Coherent Digital Receiver Concept With Feedforward Carrier Recovery for $M$-QAM ConstellationsJournal of Lightwave Technology, 2009
- New Design Method for a WDM System Employing Broad-Band Raman AmplificationIEEE Photonics Technology Letters, 2004
- Analysis of self-noise in a fourth-power clock regeneratorIEEE Transactions on Communications, 1991