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Articles

Joint multi-parameter optical performance monitoring scheme based on trajectory information for a Stokes vector direct detection system

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By Chenglin Bai, Hengying Xu, Jianping Li, Lishan Yang
| optica.org
Abstract In this study, we propose and verify a joint multi-parameter optical performance monitoring (OPM) scheme based on trajectory information for the Stokes vector direct detection (SVDD) system, for the first time, to the best of our knowledge.
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Modulation format identification using the Calinski-Harabasz index

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By Hengying Xu, Lixia Xi, Wenbo Zhang, Jinmei Ye
| osapublishing.org
Abstract Modulation format identification (MFI) is a key technology in optical performance monitoring for the next-generation optical network, such as the intelligent cognitive optical network. An MFI scheme based on the Calinski–Harabasz index for a polarization-division multiplexing (PDM) optical fiber communication system is proposed. The numerical simulations were carried out on a 28 Gbaud PDM communication system.
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Blind modulation format identification based on improved PSO clustering in a 2D Stokes plane

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By Chenglin Bai, Baokun Li, Hengying Xu, Lingguo Cao
| osapublishing.org
Abstract Blind modulation format identification (MFI) is indispensable for correct signal demodulation and optical performance monitoring in future elastic optical networks (EON). Existing MFI schemes based on a clustering algorithm in Stokes space have gained good performance, while only limited types of modulation formats could be correctly identified, and the complexities are relatively high.
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