Digital backpropagation (BP) is a universal method for jointly compensating dispersion and
nonlinear impairments in optical fiber and is applicable to signals of any modulation format …

Backpropagation has been shown to be the most effective method for compensating intra-
channel fiber nonlinearity in long-haul optical communications systems. However, effective …

Intrachannel nonlinearity is considered a major distortion in high-capacity transmission
systems particular for the case without inline optical chromatic dispersion compensation. In …

We investigate a digital back-propagation simplification method to enable computationally-
efficient digital nonlinearity compensation for a coherently-detected 112 Gb/s polarization …

We propose a novel coherent optical orthogonal frequency-division multiplexing (CO-
OFDM) scheme with reduced guard interval (RGI) for high-speed high-spectral-efficiency …

Coherent detection with receiver-based DSP has recently enabled the mitigation of fiber
nonlinear effects. We investigate the performance benefits available from the …

A comprehensive treatment of digital backward propagation (DBP) accounting for the
vectorial nature of optical transmission is presented. Experimental results show that self …

We present digital signal processing techniques and algorithms for improving the tolerance
of polarization-division multiplexed (PDM) coherent optical orthogonal frequency-division …

A multilevel relational data model that meets the basic operational requirements for a
multilevel database system is described. The model is an extension of the standard …

We report the performance of coherently-detected nine-channel WDM transmission over
high dispersion fibers, using polarization multiplexed m-ary quadrature amplitude …