Trenched raised cosine FMF for differential mode delay management in next generation optical networks

Abstract Dispersion management in few mode fiber (FMF) technology is crucial to support the upcoming standard that reaches 400 Gbps and Terabit/s per wavelength. Recently in Chebaane et al. (2016), we defined two potential differential mode delay (DMD) management strategies, namely sawtooth and triangular. Moreover we proposed a novel parametric refractive index profile for FMF, referred as raised cosine (RC) profile. In this article, we improve and optimize the RC profile design by including additional shaping parameters, in order to obtain much more attractive dispersion characteristics. Our improved design enabled to obtain a zero DMD (z-DMD), strong positive DMD (p-DMD) and near-zero DMD (nz-DMD) for six-mode fiber, all appropriate for dispersion management in FMF system. In addition, we propose a positive DMD (p-DMD) fiber designs for both, four-mode fiber (4-FMF) and six-mode fiber (6-FMF), respectively, having particularly attractive dispersion characteristics.

[1]  Masaharu Ohashi,et al.  Two mode optical fibers with low and flattened differential modal delay suitable for WDM-MIMO combined system. , 2014, Optics express.

[2]  A Supermode Fiber with Strong Mode Coupling for Space-Division Multiplexing , 2015 .

[3]  L A Rusch,et al.  Few-mode fiber with inverse-parabolic graded-index profile for transmission of OAM-carrying modes. , 2014, Optics express.

[4]  P. Sillard,et al.  Few-Mode Fibers for Mode-Division-Multiplexed Systems , 2014, Journal of Lightwave Technology.

[5]  Marianne Bigot-Astruc,et al.  Micro-bend-resistant low-DMGD 6-LP-mode fiber , 2016, 2016 Optical Fiber Communications Conference and Exhibition (OFC).

[6]  S. Chandrasekhar,et al.  Space-division multiplexed transmission over 3×3 coupled-core multicore fiber , 2014, OFC 2014.

[7]  S. Randel,et al.  Space-division multiplexed transmission , 2013, 2013 Optical Fiber Communication Conference and Exposition and the National Fiber Optic Engineers Conference (OFC/NFOEC).

[8]  Yusuke Sasaki,et al.  Recent progress on multi-core fiber and few-mode fiber , 2013, 2013 Optical Fiber Communication Conference and Exposition and the National Fiber Optic Engineers Conference (OFC/NFOEC).

[9]  Mohsen Machhout,et al.  Proposed Raised Cosine FMF for Dispersion Management in Next-Generation Optical Networks , 2016, IEEE Photonics Journal.

[10]  Yang Yue,et al.  Orbital Angular Momentum (OAM) based Mode Division Multiplexing (MDM) over a Km-length Fiber , 2012 .

[11]  N. Wada,et al.  SDM technology beyond 100 Tb/s , 2012, 2012 17th Opto-Electronics and Communications Conference.

[12]  Mohsen Machhout,et al.  Design tradeoffs of few-mode step index fiber for next generation mode division multiplexing optical networks , 2015, 2015 International Conference on Information and Communication Technology Research (ICTRC).

[13]  Roland Ryf,et al.  6×56-Gb/s mode-division multiplexed transmission over 33-km few-mode fiber enabled by 6×6 MIMO equalization. , 2011, Optics express.

[14]  Ting Wang,et al.  Low delay and large effective area few-mode fibers for mode-division multiplexing , 2012, 2012 17th Opto-Electronics and Communications Conference.

[15]  René-Jean Essiambre,et al.  Capacity Trends and Limits of Optical Communication Networks , 2012, Proceedings of the IEEE.

[16]  B. Corbett,et al.  20 × 960-Gb/s Space-division-multiplexed 32QAM transmission over 60 km few-mode fiber. , 2014, Optics express.