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Optimization of Carrier Phase Estimation for 112 Gbit/s PM-QPSK Systems
Gbit/s PM-QPSK System Optimization Carrier Phase
2011/5/15
For 112 Gbit/s PM-QPSK systems, the residual phase noise auto-correlation function with a lag of N can serve as a suitable monitor signal for optimizing the averaging in carrier phase estimation algor...
Volterra Filtering for Nonlinearity Impairment Mitigation in DP-16QAM and DP-QPSK Fiber Optic Communication Systems
P-QPSK Fiber Optic Communication Systems Nonlinearity Impairment Volterra Filtering
2011/5/15
A reduced nonlinear Volterra filter is applied to 14 Gbaud DP-16QAM and 28 Gbaud DP-QPSK systems for nonlinearity mitigation. An increased reach of 500 km and 1200 km,respectively, is achieved compare...
Comparison of RZ and NRZ Formats in 112-Gb/s PDM- QPSK Long Haul Coherent Transmission Systems
Coherent Transmission Systems PDM- QPSK RZ\NRZ Formats
2011/5/15
We show that 112-Gb/s PDM-QPSK coherent transmission systems with RZ pulse shape have better tolerance to ROADM filtering than NRZ, and time-interleaved RZ-PDM-QPSK outperform NRZ-PDM-QPSK in nonlinea...
Efficient generation of universal two-dimensional cluster states with hybrid systems
Efficient generation universal two-dimensional cluster states hybrid systems
2010/7/2
Measurement-based quantum computation (MBQC) or one-way quantum computation, which was first introduced by Briegel and Raussendorf [1] and Raussendorf et al. [2],
has recently been a hot topic in qua...
Frequency Domain Equalization with Minimum Complexity in Coherent Optical Transmission Systems
Fiber optics links subsystems Optical communications
2010/6/10
For chip-design of a frequency-domain equalizer, a simple procedure to minimize the number of multiplications is shown. Considerations include recent improvements of FFT-algorithms.
Polarization-Dependent Loss Induced Penalties in PDM-QPSK Coherent Optical Communication Systems
Fiber optics communications Coherent communications Polarization
2010/6/10
We evaluate PDL-induced penalties in PDM-QPSK coherent systems with both lumped model and distributed model. We find the lumped model significantly over-estimates PDL penalties and PDM coherent system...
Impact of PMD and Nonlinear Phase Noise on the Global Optimization of DPSK and DQPSK Systems
Optical communications Phase modulation Nonlinear optics fibers
2010/6/10
Usingaglobaloptimizationalgorithm,wemaximizethereachofDPSKandDQPSKsys-tems including PMD and nonlinear phase noise at data rates ranging from 5Gbit/s to 230Gbit/s.
Cycle Slip Probability in 100G PM-QPSK Systems
Fiber Optics Communications Coherent communications
2010/6/10
We estimate asymptotic probabilities of a cycle slip for a non-decision aided feedforward carrier synchronizer in dispersion-uncompensated optical lines with negligible nonlinear crosstalk.
Key Roles of Green Technology for Access Network Systems
General Key Roles Technology Access Network Systems
2010/6/9
ICTs are expected to reduce their own equipment and service energy consumption and mitigate GHG emissions through use of ICTs in other relevant sectors. Standardization activities of green ICTs in ITU...
Next Generation Transmission Fiber for Coherent Systems
Optical Communication Fiber optics optical communications
2010/6/9
The impact of fibre parameters on coherent system performance is presented. Not unlike intensity transmission, low loss, large effective area and high local dispersion are preferred for optimizing coh...
Photonic Generation and Processing Technologies for Converged Ultra-High Throughput Fiber-Wireless Systems
Fiber Optics Communications Networks
2010/6/9
We discuss the recent advances of key photonic generation and processing technologies toward high flexibility, integration, and spectrum efficiency for delivering ultra-high throughput wireless servic...
Arbitrary-frequency Optical Millimeter-wave Generation for Radio over Fiber Systems
Fiber Optics Communications Networks
2010/6/9
The arbitrary-frequency optical microwave or millimeter (mm)-wave signals, ranging from 25 to 325 -GHz with 25-GHz spacing, can be simultaneously generated based on the generation technology of multi-...
Broadband radio over fiber systems, which can simultaneously distribute multiple wireless services and enable remote sensing, are reviewed. The systems are used to demonstrate improved remote passive ...
Impact of Pulse Shaping on the SPM Tolerance of Electronically Pre-compensated 10.7 Gb/s DPSK Systems
Fiber optics communications Modulation
2010/6/9
Pulse shaping for electronic pre-compensation systems using differential phase shift keying modulation is experimentally shown to provide a 1.9 dB increase of the nonlinearity threshold.
Efficient Digital Backpropagation for PDM-CO-OFDM Optical Transmission Systems
Fiber optics communications Modulation
2010/6/9
We demonstrated experimentally that computationally-efficient digital nonlinearity compensation using backpropagation can increase the nonlinear tolerance of 61.7 Gb/s PDM-CO-OFDM by 2.2 dB in a 500 k...