• Publications
  • Influence
Compensation of Dispersion and Nonlinear Impairments Using Digital Backpropagation
  • E. Ip, J.M. Kahn
  • Mathematics
  • Journal of Lightwave Technology
  • 15 October 2008
Optical fiber transmission is impacted by linear and nonlinear impairments. We study the use of digital backpropagation (BP) in conjunction with coherent detection to jointly mitigate dispersion andExpand
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Feedforward Carrier Recovery for Coherent Optical Communications
  • E. Ip, J.M. Kahn
  • Mathematics
  • Journal of Lightwave Technology
  • 4 September 2007
We study a carrier-synchronization scheme for coherent optical communications that uses a feedforward architecture that can be implemented in digital hardware without a phase-locked loop. We deriveExpand
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Digital Equalization of Chromatic Dispersion and Polarization Mode Dispersion
In this paper, we consider a fractionally spaced equalizer (FSE) for electronic compensation of chromatic dispersion (CD) and polarization-mode dispersion (PMD) in a dually polarizedExpand
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Spectral efficiency limits and modulation/detection techniques for DWDM systems
Information-theoretic limits to spectral efficiency in dense wavelength-division-multiplexed (DWDM) transmission systems are reviewed, considering various modulation techniques (unconstrained,Expand
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Principal Modes in Graded-Index Multimode Fiber in Presence of Spatial- and Polarization-Mode Coupling
Power-coupling models are inherently unable to describe certain mode coupling effects in multimode fiber (MMF) when using coherent sources at high bit rates, such as polarization dependence of theExpand
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Signal Design and Detection in Presence of Nonlinear Phase Noise
In optical fiber transmission systems using inline amplifiers, the interaction of a signal and amplifier noise through the Kerr effect leads to nonlinear phase noise that can impair the detection ofExpand
  • 103
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Fiber Impairment Compensation Using Coherent Detection and Digital Signal Processing
  • E. Ip, J.M. Kahn
  • Engineering
  • Journal of Lightwave Technology
  • 15 February 2010
Next-generation optical fiber systems will employ coherent detection to improve power and spectral efficiency, and to facilitate flexible impairment compensation using digital signal processorsExpand
  • 172
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Impact of chromatic and polarization-mode dispersions on DPSK systems using interferometric demodulation and direct detection
We study the impact of chromatic dispersion (CD) and first-order polarization-mode dispersion (PMD) on systems using binary differential phase-shift keying (2-DPSK) or quaternary DPSK (4-DPSK) withExpand
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Electronic compensation technique to mitigate nonlinear phase noise
Nonlinear phase noise, often called the Gordon-Mollenauer effect, can be compensated electronically by subtracting from the received phase a correction proportional to the received intensity. TheExpand
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Performance of electrical equalizers in optically amplified OOK and DPSK systems
TLDR
We study the performance of feed-forward equalizers (FFEs) and decision-feedback equalizers in compensating chromatic dispersion and first-order polarization-mode dispersion (PMD) in optically amplified nonreturn-to-zero on-off keying (NRZ-OOK) systems at 10 Gb/s. Expand
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