To meet the exponentially growing demand fbr bandwidth in Optical Transport Networks （OTNs）, 100-Gb/s （100G） coherent technology based oil Polarization-Division Multiplexed Quadrature Phase Shift Keying （PDM-QPSK...To meet the exponentially growing demand fbr bandwidth in Optical Transport Networks （OTNs）, 100-Gb/s （100G） coherent technology based oil Polarization-Division Multiplexed Quadrature Phase Shift Keying （PDM-QPSK）, which enables the capacity of a Wavelength Division Multiplexing （WDM） system to approach 10 Tb/s, is being widely deployed globally. As the first vendor to intro- duce a single-carrier 100G solution, A1- catel-Lucent has developed key transponder and network management technologies, which are reviewed in this paper together with their commercial evolution to 400G. Focusing on the Chinese market, we also review some key bench-mark testing results obtained in partner- ship with major Chinese operators. Finally, we discuss enabling technologies that are currently being researched to allow interfaces to scale to Terabit/s rates.展开更多
In this paper, we evaluate transmission in a 1 Tb/s （10 × 112 Gb/s） Nyquist WDM PMRZQPSK superchannel over a widelydeployed SMF-28 fiber with and without maximum aposteriori （MAP） equalization. Over 1000 km c...In this paper, we evaluate transmission in a 1 Tb/s （10 × 112 Gb/s） Nyquist WDM PMRZQPSK superchannel over a widelydeployed SMF-28 fiber with and without maximum aposteriori （MAP） equalization. Over 1000 km can be reached with BER below the HD FEC limit and with a spectral efficiency of 4 b/s/Hz.展开更多
In this paper, we propose a novel superreceiver architecture for Nyquistwavelengthdivision multiplexing （WDM） superchannel optical coherent systems. As opposed to a conventional coherent receiver, where each subchan...In this paper, we propose a novel superreceiver architecture for Nyquistwavelengthdivision multiplexing （WDM） superchannel optical coherent systems. As opposed to a conventional coherent receiver, where each subchannel is demodulated independently, the proposed superreceiver jointly detects and demodulates multiple subchannels simultaneously. By taking advantage of information from side channels that use joint DSP to cancel interchannel interference （ICI）, the proposed super receiver performs much better than a conventional receiver. This architecture also has the potential to compensate for crosschannel impairments caused by linear and nonlinear effects. We examine the proposed architecture through experiment and simulation. OSNR is improved by more than 5 dB after 1280 km fiber transmission with narrow channel spacing.展开更多
文摘To meet the exponentially growing demand fbr bandwidth in Optical Transport Networks （OTNs）, 100-Gb/s （100G） coherent technology based oil Polarization-Division Multiplexed Quadrature Phase Shift Keying （PDM-QPSK）, which enables the capacity of a Wavelength Division Multiplexing （WDM） system to approach 10 Tb/s, is being widely deployed globally. As the first vendor to intro- duce a single-carrier 100G solution, A1- catel-Lucent has developed key transponder and network management technologies, which are reviewed in this paper together with their commercial evolution to 400G. Focusing on the Chinese market, we also review some key bench-mark testing results obtained in partner- ship with major Chinese operators. Finally, we discuss enabling technologies that are currently being researched to allow interfaces to scale to Terabit/s rates.
文摘In this paper, we evaluate transmission in a 1 Tb/s （10 × 112 Gb/s） Nyquist WDM PMRZQPSK superchannel over a widelydeployed SMF-28 fiber with and without maximum aposteriori （MAP） equalization. Over 1000 km can be reached with BER below the HD FEC limit and with a spectral efficiency of 4 b/s/Hz.
文摘In this paper, we propose a novel superreceiver architecture for Nyquistwavelengthdivision multiplexing （WDM） superchannel optical coherent systems. As opposed to a conventional coherent receiver, where each subchannel is demodulated independently, the proposed superreceiver jointly detects and demodulates multiple subchannels simultaneously. By taking advantage of information from side channels that use joint DSP to cancel interchannel interference （ICI）, the proposed super receiver performs much better than a conventional receiver. This architecture also has the potential to compensate for crosschannel impairments caused by linear and nonlinear effects. We examine the proposed architecture through experiment and simulation. OSNR is improved by more than 5 dB after 1280 km fiber transmission with narrow channel spacing.
