High Resolution Characterization of the Spectral Broadening Due to Fiber Nonlinearities

Kashi, Aazar Saadaat; Cartledge, J.C.; Gao, Ying; Rezania, A.; O’Sullivan, Maurice; Laperle, Charles; Borowiec, A.; Roberts, Kim

doi:10.1109/lpt.2016.2594379

Cited by 4 publications

(2 citation statements)

References 12 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The other refers to a numerical measurement of the received signal spectrum, where the received signal bandwidths (taking into account the spectral broadening) were accessed using a truncation of the broadened signal spectrum detected at the output of fibre. When 99.99% of the transmitted signal power is included, the bandwidth of the truncated spectrum is regarded as the numerically measured value of the received signal bandwidth 9 , 18 , 36 . Based on these two approaches, the received signal bandwidth considering the spectral broadening effect has been evaluated in Fig.…”

Section: Resultsmentioning

confidence: 99%

“…The effects and changes in nonlinearity-broadened optical spectra in WDM multi-span communication systems depend on the joint interaction between fibre nonlinearity and dispersion 14 , 34 . The spectral broadening effect has been studied in dispersion-managed optical communication systems, in which significant degradations on the transmission distance and bit-error-rate arose from this effect 9 , 12 . In this work the effect of spectral broadening was investigated and analysed in dispersion-unmanaged optical communication systems, when the MC-DBP is applied.…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Digital nonlinearity compensation in high-capacity optical communication systems considering signal spectral broadening effect

Karanov

Shevchenko

et al. 2017

Sci Rep

View full text Add to dashboard Cite

Nyquist-spaced transmission and digital signal processing have proved effective in maximising the spectral efficiency and reach of optical communication systems. In these systems, Kerr nonlinearity determines the performance limits, and leads to spectral broadening of the signals propagating in the fibre. Although digital nonlinearity compensation was validated to be promising for mitigating Kerr nonlinearities, the impact of spectral broadening on nonlinearity compensation has never been quantified. In this paper, the performance of multi-channel digital back-propagation (MC-DBP) for compensating fibre nonlinearities in Nyquist-spaced optical communication systems is investigated, when the effect of signal spectral broadening is considered. It is found that accounting for the spectral broadening effect is crucial for achieving the best performance of DBP in both single-channel and multi-channel communication systems, independent of modulation formats used. For multi-channel systems, the degradation of DBP performance due to neglecting the spectral broadening effect in the compensation is more significant for outer channels. Our work also quantified the minimum bandwidths of optical receivers and signal processing devices to ensure the optimal compensation of deterministic nonlinear distortions.

show abstract

Section: Resultsmentioning

confidence: 99%