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Frequency Domain Equalization with Minimum Complexity in Coherent Optical Transmission Systems
Fiber optics links subsystems Optical communications
2015/6/10
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
2015/6/10
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
2015/6/10
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
2015/6/10
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
2015/6/9
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
2015/6/9
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
2015/6/9
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
2015/6/9
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
2015/6/9
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
2015/6/9
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...
Terabit/s Single-Carrier Transmission Systems Based on Coherent Time-Division Demultiplexing
Fiber optics communications Ultrafast technology
2015/6/9
Single-carrier systems using coherent time-division demultiplexing and demodulation of 4-PSK, 8-PSK and 16-QAM at bit rates up to 5.1 Tb/s are reviewed. Emphasis is on transmission experiments up to 1...
All-optical parallelization for high sampling rate photonic ADC in fully digital radar systems
Ultrafast information processing Nonlinear optics four-wave mixing
2015/6/9
Optical samples of RF signals are all-optically parallelized for further processing in low-speed electrical digitizers. This technique enables high-rate sampling with no additional jitter and limited ...
High-Speed Optical Transceiver and Systems for Optical Interconnects
Optical devices Optical interconnects
2015/6/9
Demand for higher data throughput and higher interconnect densities in servers and routers for IT network systems is growing quickly. Optical interconnects have both speed and high-density. There are ...
A Dual-Peak Optical Demultiplexer in 60GHz-band Radio over Fiber Systems
Multiplexing Fiber Bragg gratings
2015/6/8
A dual-peak optical demultiplexer based on sampled and phase-shifted fiber Bragg grating was proposed and the impact of group delay is discussed. The demultiplexer is experimentally demonstrated and a...