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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...
Compensating XPM for 100 Gbit/s coherent channels with 10 Gbit/s direct-detection NRZ neighbors
Fiber optics communications Modulation
2015/6/9
We propose a simple optoelectronic method to compensate for cross-phase modulation in long-haul systems. Simulations show >1.3 dB improvement in Q for 1200-km 40 and 100-Gbit/s CO-QPSK and CO-OFDM cha...
Recent Progress on Nonlinear Compensation Technique in Digital Coherent Receiver
Fiber optics communications Coherent communications
2015/6/9
Enhanced digital signal processing algorithms are proposed and evaluated experimentally in order to improve the tolerances to intra-channel and inter-channel nonlinear effects of intradyne receiver an...
Volterra Nonlinear Compensation of 100G Coherent OFDM with Baud-rate ADC, Tolerable Complexity and Low Intra-channel FWM/XPM Error Propagation
Coherent Communications Fiber Optic Communications
2015/6/9
Nonlinear tolerance of PDM-OFDM transmission with in-line dispersion compensation, e.g. legacy ultra-long-haul submarine links, is substantially improved by a Volterra non-linear compensation scheme, ...
Experimental Demonstration of Coherent MAP Detection for Nonlinearity Mitigation in Long-Haul Transmissions
Coherent communications Fiber optics communications
2015/6/9
We implemented a maximum a posteriori probability (MAP) detection scheme for mitigating nonlinear phase distortion. We demonstrated 1 dB improvement in system performance and ~2dB higher nonlinearity ...
Transmission of 42.8-Gb/s Polarization Multiplexed RZ- QPSK DWDM Signals over 3900 km with 12.5-GHz Channel Spacing and Coherent Detection
Fiber optical communications Fiber optics links subsystems
2015/6/9
We have experimentally demonstrated 42.8Gb/s DWDM transmission over 3900km SMF-28 with 12.5-GHz channel spacing and coherent detection. Eight polarization-multiplexed-RZ-QPSK signals have been success...
Long-haul coherent QPSK transmission of 40G channels with 120% spectral efficiency using increased linearity dispersion map with 100km spans and EDFAs
fiber optics communications Coherent communications
2015/6/9
We study transmission of 40 Gb/s signals using coherent RZ-QPSK with and without polarization multiplexing using 100km large effective area fiber-spans and dual-stage EDFAs with mid-stage dispersion c...
160-Gb/s Polarization-Multiplexed 16-QAM long-haul transmission over 3,123 km using digital coherent receiver with digital PLL based frequency offset compensator
Fiber Optics Communications Coherent communications
2015/6/9
We demonstrate 160-Gb/s PDM 16-QAM single channel transmission over the longest distance yet to be reported, of 3123.9 km. The coherent receiver employs a frequency offset compensator based on a digit...
8-Fold 40-to-320-Gbit/s Phase-Coherent WDM-to-TDM Multiplexing and 320-to-40-Gbit/s Demultiplexing Using Highly Nonlinear Fibers
Fiber optics communications Ultrafast nonlinear optics
2015/6/9
We experimentally demonstrate 40-to-320-Gbit/s phase-coherent WDM-to-TDM multiplexing based on cross-phase modulation (XPM) and subsequent 320-to-40-Gbit/s demultiplexing using XPM-induced frequency s...
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...
Sub-Rate Sampling in 100 Gb/s Coherent Optical Receivers
Fiber Optics Communications Coherent communications
2015/6/9
We investigate the feasibility of ADC sampling rate below 2x versus optical/electrical bandwidths in 100G-PM-QPSK coherent receivers. We find <0.5 dB penalty for rates down to 5/4x even for dispersion...
Coherent CD Equalization for 111Gbps DP-QPSK with One Sample per Symbol Based on Anti-Aliasing Filtering and MLSE
Fiber optics communications Coherent communications
2015/6/9
W e propose a coherent detection scheme with one sample per symbol. MLSE is used to compensate for ISI introduced by anti aliasing filtering. 50,000 ps/nm of CD is fully compensated with only 1 dB pen...
Pseudo-Newton based Equalization Algorithms for QAM Coherent Optical Systems
Coherent communications Optical communications
2015/6/8
In 112Gbit/s optical coherent transmission context, we propose decision-directed and blind adaptive equalizers using variable step size suitable for 16-QAM. The considered algorithms offer better stea...
Optical Carrier Suppression and Balanced Coherent Heterodyne Detection for Improved Performance in Wide-band Microwave Photonic Links
Optical Carrier Suppression Balanced Coherent Heterodyne Detection Improved Performance Wide-band Microwave Photonic Links
2015/6/8
We demonstrate a wide-band microwave photonic link with high gain and dynamic range, low noise figure, and dispersion-free propagation using double sideband suppressed carrier modulation, optical ampl...
Linear Coherent Optical Receivers
Integrated optoelectronic circuits Coherent communications Phase modulation Fiber optics links and subsystems
2015/6/8
The development of linear coherent receivers at UCSB is reviewed. The progression of the feedback receiver architecture toward closer integration, lower feedback delay and higher performance is outlin...