Beyond 100-Tb/s ultra-wideband transmission in S, C, and L bands over single-mode fiber

The explosive increase in data traffic over the last few decades has been driving the demand for high-capacity optical transmission systems. State-of-the-art spectrally efficient technologies such as high-order modulation formats, probabilistic constellation shaping (PCS) and high-performance forward error correction (FEC) have realized capacities very close to the theoretical limit of the wavelength bands used. The widely-used erbium-doped fiber amplifier (EDFA) is unable to support another wavelength-division multiplexing (WDM) channel because few amplification bands remain unused. Ultra-wideband (UWB) transmission with extra bandwidths, e.g., S, C and L bands, is a promising candidate for expanding transmission capacity. UWB systems can enlarge capacity without replacing any of the existing fiber infrastructure, which offers dramatic efficiencies in the cost and delay for system deployment. Recently, 100-Tb/s-class UWB transmission has been experimentally demonstrated, and the S-band region is regarded as the next candidate beyond conventional C and/or L band WDM systems. Designing such systems demands an understanding of how interchannel stimulated Raman scattering (ISRS) impacts WDM-system performance; because the S and L bands are separated by around 100 nm, ISRS is a significant issue. In this paper, we investigate the effects of ISRS on signal quality of UWB transmission systems with experiments on S- (35 channel) and L- (40 channel) band WDM transmission using DP-16QAM signals. The results show that ISRS causes only signal power transfer, whereas the nonlinear cross-talk generated by ISRS has only minimal effect on signal quality. We prove the concept of UWB transmission by a DP-128QAM 150.3-Tb/s transmission experiment over a 40- km single-mode fiber in S, C, and L bands with WDM bandwidth of 13.6 THz; success is due to our proposed signal power optimization scheme which considers ISRS-induced power transfer between S and L bands.

[1]  Polina Bayvel,et al.  A Closed-Form Approximation of the Gaussian Noise Model in the Presence of Inter-Channel Stimulated Raman Scattering , 2018, Journal of Lightwave Technology.

[2]  T. Kobayashi,et al.  102.3-Tb/s (224 × 548-Gb/s) C- and extended L-band all-Raman transmission over 240 km using PDM-64QAM single carrier FDM with digital pilot tone , 2012, OFC/NFOEC.

[3]  P. Bayvel,et al.  Achievable rate degradation of ultra-wideband coherent fiber communication systems due to stimulated Raman scattering. , 2017, Optics express.

[4]  Robert I. Killey,et al.  Modulation Format Dependent, Closed-Form Formula for Estimating Nonlinear Interference in S+C+L Band Systems , 2020, 45th European Conference on Optical Communication (ECOC 2019).

[5]  Robert I. Killey,et al.  Overview and Comparison of Nonlinear Interference Modelling Approaches in Ultra-Wideband Optical Transmission Systems , 2019, 2019 21st International Conference on Transparent Optical Networks (ICTON).

[6]  Andrew R. Chraplyvy Optical power limits in multi-channel wavelength-division-multiplexed systems due to stimulated Raman scattering , 1984 .

[7]  Polina Bayvel,et al.  The Gaussian Noise Model in the Presence of Inter-Channel Stimulated Raman Scattering , 2017, Journal of Lightwave Technology.

[8]  Chang-Hee Lee,et al.  Capacities of WDM transmission systems and networks limited by stimulated Raman scattering , 2001, IEEE Photonics Technology Letters.

[9]  Govind P. Agrawal,et al.  Nonlinear Fiber Optics , 1989 .

[10]  S. Norimatsu,et al.  Waveform distortion due to stimulated Raman scattering in wide-band WDM transmission systems , 2001 .

[11]  B. Mikkelsen,et al.  O, E, S, C, and L band silicon photonics coherent modulator/receiver , 2016, 2016 Optical Fiber Communications Conference and Exhibition (OFC).

[12]  Guanshi Qin,et al.  Design of Ultimate Gain-Flattened O-, E-, and S$+$ C$+$ L Ultrabroadband Fiber Amplifiers Using a New Fiber Raman Gain Medium , 2007, Journal of Lightwave Technology.

[13]  Fan Yu,et al.  LDPC convolutional codes using layered decoding algorithm for high speed coherent optical transmission , 2012, OFC/NFOEC.

[14]  P. Poggiolini The GN Model of Non-Linear Propagation in Uncompensated Coherent Optical Systems , 2012, Journal of Lightwave Technology.

[15]  A. Chraplyvy,et al.  Performance degradation due to stimulated Raman scattering in wavelength-division-multiplexed optical-fibre systems , 1983 .

[16]  E. Ip,et al.  High Capacity/Spectral Efficiency 101.7-Tb/s WDM Transmission Using PDM-128QAM-OFDM Over 165-km SSMF Within C- and L-Bands , 2012, Journal of Lightwave Technology.

[17]  Keang-Po Ho,et al.  Statistical properties of stimulated Raman crosstalk in WDM systems , 2000, Journal of Lightwave Technology.

[18]  A. Chraplyvy Limitations on lightwave communications imposed by optical-fiber nonlinearities , 1990 .

[19]  Roland Ryf,et al.  107 Tb/s Transmission of 103-nm Bandwidth over 3×100 km SSMF using Ultra-Wideband Hybrid Raman/SOA Repeaters , 2019, 2019 Optical Fiber Communications Conference and Exhibition (OFC).

[20]  P. Bayvel,et al.  91 nm C+L Hybrid Distributed Raman–Erbium-Doped Fibre Amplifier for High Capacity Subsea Transmission , 2018, 2018 European Conference on Optical Communication (ECOC).

[21]  E. Dianov Amplification in Extended Transmission Bands Using Bismuth-Doped Optical Fibers , 2013, Journal of Lightwave Technology.

[22]  Amirhossein Ghazisaeidi,et al.  First 100-nm Continuous-Band WDM Transmission System with 115Tb/s Transport over 100km Using Novel Ultra-Wideband Semiconductor Optical Amplifiers , 2017, 2017 European Conference on Optical Communication (ECOC).

[23]  Masanori Nakamura,et al.  150.3-Tb/s Ultra-Wideband (S, C, and L Bands) Single-Mode Fibre Transmission over 40-km Using >519Gb/s/A PDM-128QAM Signals , 2018, 2018 European Conference on Optical Communication (ECOC).

[24]  F. Forghieri,et al.  Effect of modulation statistics on Raman crosstalk in WDM systems , 1994, IEEE Photonics Technology Letters.

[25]  D. J. Richardson,et al.  1-Pb/s (32 SDM/46 WDM/768 Gb/s) C-band dense SDM transmission over 205.6-km of single-mode heterogeneous multi-core fiber using 96-Gbaud PDM-16QAM channels , 2017, 2017 Optical Fiber Communications Conference and Exhibition (OFC).

[26]  Gabriella Bosco,et al.  EGN model of non-linear fiber propagation. , 2014, Optics express.