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On the performance of multichannel digital backpropagation in high-capacity long-haul optical transmission
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Liga, Gabriele, Xu, Tianhua, Alvarado, Alex, Killey, Robert I. and Bayvel, Polina (2014) On the performance of multichannel digital backpropagation in high-capacity long-haul optical transmission. Optics Express, 22 (24). 30053. doi:10.1364/OE.22.030053
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Official URL: http://dx.doi.org/10.1364/OE.22.030053
Abstract
The performance of digital backpropagation (DBP) equalization when applied over multiple channels to compensate for the nonlinear impairments in optical fiber transmission systems is investigated. The impact of a suboptimal multichannel DBP operation is evaluated, where implementation complexity is reduced by varying parameters such as the number of nonlinear steps per span and sampling rate. Results have been obtained for a reference system consisting of a 5×32 Gbaud PDM-16QAM superchannel with 33 GHz subchannel spacing and Nyquist pulse shaping under long-haul transmission. The reduction in the effectiveness of the algorithm is evaluated and compared with the ideal gain expected from the cancellation of the nonlinear signal distortion. The detrimental effects of polarization mode dispersion (PMD) with varying DBP bandwidth are also studied. Key parameters which ensure the effectiveness of multichannel DBP are identified.
| Item Type: | Journal Article | ||||||||
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| Subjects: | T Technology > TK Electrical engineering. Electronics Nuclear engineering | ||||||||
| Divisions: | Faculty of Science > Engineering | ||||||||
| Library of Congress Subject Headings (LCSH): | Optical fiber communication, Fiber optics | ||||||||
| Journal or Publication Title: | Optics Express | ||||||||
| Publisher: | Optical Society of America | ||||||||
| ISSN: | 1094-4087 | ||||||||
| Official Date: | 1 December 2014 | ||||||||
| Dates: |
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| Volume: | 22 | ||||||||
| Number: | 24 | ||||||||
| Article Number: | 30053 | ||||||||
| DOI: | 10.1364/OE.22.030053 | ||||||||
| Institution: | University of Warwick | ||||||||
| Status: | Peer Reviewed | ||||||||
| Publication Status: | Published | ||||||||
| Access rights to Published version: | Open Access | ||||||||
| Funder: | Engineering and Physical Sciences Research Council (EPSRC), Hua wei ji shu you xian gong si [Huawei Technologies Company] | ||||||||
| Grant number: | EP/J017582/1 |
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