28-GBd 32QAM FMF transmission with low complexity phase estimators and single DPLL

R.G.H. Uden, van; C.M. Okonkwo; H. Chen; H. Waardt, de; A.M.J. Koonen

doi:10.1109/LPT.2014.2305450

28-GBd 32QAM FMF transmission with low complexity phase estimators and single DPLL

R.G.H. Uden, van, C.M. Okonkwo, H. Chen, H. Waardt, de, A.M.J. Koonen

Research output: Contribution to journal › Article › Academic › peer-review

10 Citations (Scopus)

Abstract

As spatial division multiplexed transmission systems employing few mode fibers (FMFs) rely heavily on digital signal processing (DSP), the impact of computational complexity should be considered. A key DSP process block is the carrier phase estimation (CPE), which consists of a phase estimator and digital phase locked loop (DPLL) per output. In this work, a low complexity phase estimator is proposed, and the common-mode laser frequency offset is exploited to reduce the number of DPLLs. The combination of a low complexity CPE and single DPLL is experimentally demonstrated for a 28GBaud 6-channel transmission over 41.7km FMF, carrying up to 32 quadrature amplitude modulation (QAM). Thereby, the nonlinear tolerances for the proposed CPE scheme is shown to perform similarly as the more computationally complex conventional CPE scheme.

Original language	English
Pages (from-to)	765-768
Number of pages	4
Journal	IEEE Photonics Technology Letters
Volume	26
Issue number	8
DOIs	https://doi.org/10.1109/LPT.2014.2305450
Publication status	Published - 2014

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title = "28-GBd 32QAM FMF transmission with low complexity phase estimators and single DPLL",

abstract = "As spatial division multiplexed transmission systems employing few mode fibers (FMFs) rely heavily on digital signal processing (DSP), the impact of computational complexity should be considered. A key DSP process block is the carrier phase estimation (CPE), which consists of a phase estimator and digital phase locked loop (DPLL) per output. In this work, a low complexity phase estimator is proposed, and the common-mode laser frequency offset is exploited to reduce the number of DPLLs. The combination of a low complexity CPE and single DPLL is experimentally demonstrated for a 28GBaud 6-channel transmission over 41.7km FMF, carrying up to 32 quadrature amplitude modulation (QAM). Thereby, the nonlinear tolerances for the proposed CPE scheme is shown to perform similarly as the more computationally complex conventional CPE scheme.",

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journal = "IEEE Photonics Technology Letters",

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T1 - 28-GBd 32QAM FMF transmission with low complexity phase estimators and single DPLL

AU - Uden, van, R.G.H.

AU - Okonkwo, C.M.

AU - Chen, H.

AU - Waardt, de, H.

AU - Koonen, A.M.J.

PY - 2014

Y1 - 2014

N2 - As spatial division multiplexed transmission systems employing few mode fibers (FMFs) rely heavily on digital signal processing (DSP), the impact of computational complexity should be considered. A key DSP process block is the carrier phase estimation (CPE), which consists of a phase estimator and digital phase locked loop (DPLL) per output. In this work, a low complexity phase estimator is proposed, and the common-mode laser frequency offset is exploited to reduce the number of DPLLs. The combination of a low complexity CPE and single DPLL is experimentally demonstrated for a 28GBaud 6-channel transmission over 41.7km FMF, carrying up to 32 quadrature amplitude modulation (QAM). Thereby, the nonlinear tolerances for the proposed CPE scheme is shown to perform similarly as the more computationally complex conventional CPE scheme.

AB - As spatial division multiplexed transmission systems employing few mode fibers (FMFs) rely heavily on digital signal processing (DSP), the impact of computational complexity should be considered. A key DSP process block is the carrier phase estimation (CPE), which consists of a phase estimator and digital phase locked loop (DPLL) per output. In this work, a low complexity phase estimator is proposed, and the common-mode laser frequency offset is exploited to reduce the number of DPLLs. The combination of a low complexity CPE and single DPLL is experimentally demonstrated for a 28GBaud 6-channel transmission over 41.7km FMF, carrying up to 32 quadrature amplitude modulation (QAM). Thereby, the nonlinear tolerances for the proposed CPE scheme is shown to perform similarly as the more computationally complex conventional CPE scheme.

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DO - 10.1109/LPT.2014.2305450

M3 - Article

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SP - 765

EP - 768

JO - IEEE Photonics Technology Letters

JF - IEEE Photonics Technology Letters

IS - 8

ER -

28-GBd 32QAM FMF transmission with low complexity phase estimators and single DPLL

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