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FPGA Verification of a Single QC-LDPC Code for 100 Gb/s Optical Systems without Error Floor down to BER of 10 -15
Fiber optics communications Optical communications
2015/5/25
We present FPGA-based emulation results of a single QC-LDPC code with 20% redundancy designed for applications in 100 Gb/s optical transmission systems. Error floor-free transmission can be achieved a...
Simple and Scalable WDM/TDMA-PON using Spectral Slicing and Forward Error Correction
Fiber optics communications Networks combinatorial network design
2015/5/22
We describe a simple and scalable WDM/TDMA PON system that uses spectral slicing and FEC in burst-mode upstream transmissions. The sensitivity was improved to -31.5 dB at a sliced bandwidth of 400 GHz...
Bit-error Rate Performance of Nyquist Wavelength-Division Multiplexed Quadrature Phase-Shift Keying Optical Signals
Coherent communications Multiplexing Optical communications
2015/5/20
We measure bit-error rates of polarization-multiplexed Nyquist-WDM QPSK signals,which have rectangular spectral shapes and channel spacing equal to the symbol rate. The spectral efficiency of 4 bit/s/...
Time-Resolved Error Vector Magnitude for Transmitter Mask Testing in Coherent Optical Transmission Systems
Time-Resolved Optical Transmission Systems Mask Testing
2015/5/15
We propose a novel transition-sensitive measurement approach for coherent optical systems. The time-resolved error vector magnitude (EVM), combined with mask testing, is a powerful tool for pass/fail ...
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, ...
First Demonstration of 10-Gbit/s Operation of an All-Optical Error Detection Circuit
All-Optical Error Detection Circuit
2015/8/4
We demonstrate the operation of an all-optical error detection circuit consisting of all-optical XOR gates using SOA-MZI’s. We could successively observe error signals in the syndrome.