High-order modulation formats, constellation design, and digital signal processing for high-speed transmission systems

Xu, Tianhua; Liga, Gabriele; Bayvel, Polina

doi:10.1016/b978-0-12-816502-7.00010-5

Cited by 2 publications

(1 citation statement)

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“…Optical fibers carry over 95% of Internet data across continents and oceans and are expected to be the key technology to support the future IP traffic demand [2]. The increasing demand on higher data capacity has promoted the development and application of higher-order modulation formats, denser wavelength division multiplexing (WDM) and more powerful digital signal processing (DSP) techniques [3]. Nyquist-spacing and DSP-based coherent optical transmission has proved efficient in enhancing the information capacity, the spectral efficiency (SE) and the maximum reach of fiber communication systems.…”

Section: Introductionmentioning

confidence: 99%

Influence of Spectral Broadening on Nonlinearity Compensation in Ultra-Wideband Optical Fiber Communications

Ding

Liu

et al. 2020

2020 22nd International Conference on Transparent Optical Networks (ICTON)

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Optical fiber networks form the major part of the modern telecommunication infrastructure and are carrying over 95% of the Internet digital data. The increasing demand for higher data rates has promoted the development of higher-order modulation formats, denser wavelength multiplexing and more powerful signal processing. With the entire suppression of the chromatic dispersion, the polarization mode dispersion and the laser phase noise using digital signal processing, Kerr fiber nonlinearities become the main capacity barrier for optical communication systems, and digital back-propagation is generally applied to overcome such distortions. Kerr effects also result in the broadening of spectra of signals propagating in optical fibers, owing to intra-and inter-channel nonlinear interactions. This report shows that the spectral broadening effect is crucial for achieving an optimal performance of the digital back-propagation in wideband optical trasnmission systems.

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Section: Introductionmentioning

confidence: 99%