Spatial Superchannel Routing in a Two-Span ROADM System for Space Division Multiplexing

We report a two-span, 67-km space-division-multiplexed (SDM) wavelength-division-multiplexed (WDM) system incorporating the first reconfigurable optical add-drop multiplexer (ROADM) supporting spatial superchannels and the first cladding-pumped multicore erbium-doped fiber amplifier directly spliced to multicore transmission fiber. The ROADM subsystem utilizes two conventional 1 × 20 wavelength selective switches (WSS) each configured to implement a 7 × (1 × 2) WSS. ROADM performance tests indicate that the subchannel insertion losses, attenuation accuracies, and passband widths are well matched to each other and show no significant penalty, compared to the conventional operating mode for the WSS. For 6 × 40 × 128-Gb/s SDM-WDM polarization-multiplexed quadrature phase-shift-keyed (PM-QPSK) transmission on 50 GHz spacing, optical signal-to-noise ratio penalties are less than 1.6 dB in Add, Drop, and Express paths. In addition, we demonstrate the feasibility of utilizing joint signal processing of subchannels in this two-span, ROADM system.

[1]  E. Ip,et al.  105Pb/s Transmission with 109b/s/Hz Spectral Efficiency using Hybrid Single- and Few-Mode Cores , 2012 .

[2]  N. Wada,et al.  19-core fiber transmission of 19×100×172-Gb/s SDM-WDM-PDM-QPSK signals at 305Tb/s , 2012, OFC/NFOEC.

[3]  Takashi Mizuochi,et al.  Forward error correction for 100 G transport networks , 2010, IEEE Communications Magazine.

[4]  Gil Cohen,et al.  MEMS wavelength-selective switch incorporating liquid crystal shutters for attenuation and hitless operation , 2013, 2013 International Conference on Optical MEMS and Nanophotonics (OMN).

[5]  L. Nelson,et al.  ROADM system for space division multiplexing with spatial superchannels , 2013, 2013 Optical Fiber Communication Conference and Exposition and the National Fiber Optic Engineers Conference (OFC/NFOEC).

[6]  Ryuichi Sugizaki,et al.  Batch multicore amplification with cladding-pumped multicore EDF , 2012, 2012 38th European Conference and Exhibition on Optical Communications.

[7]  I. Giles,et al.  First demonstration of multimode amplifier for spatial division multiplexed transmission systems , 2011, 2011 37th European Conference and Exhibition on Optical Communication.

[8]  M. Fishteyn,et al.  Joint Digital Signal Processing Receivers for Spatial Superchannels , 2012, IEEE Photonics Technology Letters.

[9]  A D Ellis,et al.  73.7 Tb/s (96 x 3 x 256-Gb/s) mode-division-multiplexed DP-16QAM transmission with inline MM-EDFA. , 2012, Optics express.

[10]  Guifang Li,et al.  Hole-Assisted Few-Mode Multicore Fiber for High-Density Space-Division Multiplexing , 2012, IEEE Photonics Technology Letters.

[11]  H. Yoshida,et al.  Evolution and status of forward error correction , 2012, OFC/NFOEC.

[12]  E. Ip,et al.  146λ × 6 × 19-Gbaud Wavelength-and Mode-Division Multiplexed Transmission Over 10 × 50-km Spans of Few-Mode Fiber With a Gain-Equalized Few-Mode EDFA , 2014, Journal of Lightwave Technology.

[13]  Ting Wang,et al.  64-Tb/s, 8 b/s/Hz, PDM-36QAM Transmission Over 320 km Using Both Pre- and Post-Transmission Digital Signal Processing , 2011, Journal of Lightwave Technology.

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

[15]  Peter M Krummrich,et al.  Optical amplification and optical filter based signal processing for cost and energy efficient spatial multiplexing. , 2011, Optics express.

[16]  A. Gnauck,et al.  32-bit/s/Hz spectral efficiency WDM transmission over 177-km few-mode fiber , 2013, 2013 Optical Fiber Communication Conference and Exposition and the National Fiber Optic Engineers Conference (OFC/NFOEC).

[17]  Maxim Kuschnerov,et al.  73.7 Tb/s (96X3x256-Gb/s) mode-division-multiplexed DP-16QAM transmission with inline MM-EDFA , 2012 .

[18]  L. E. Nelson,et al.  Colorless reception of a single 100Gb/s channel from 80 coincident channels via an intradyne coherent receiver , 2012, IEEE Photonics Conference 2012.

[19]  B Zhu,et al.  Cladding-pumped erbium-doped multicore fiber amplifier. , 2012, Optics express.

[20]  T Tsuritani,et al.  First demonstration of MC-EDFA-repeatered SDM transmission of 40 x 128-Gbit/s PDM-QPSK signals per core over 6,160-km 7-core MCF. , 2013, Optics express.

[21]  Toshio Morioka,et al.  1.01-Pb/s (12 SDM/222 WDM/456 Gb/s) Crosstalk-managed Transmission with 91.4-b/s/Hz Aggregate Spectral Efficiency , 2012 .

[22]  B Zhu,et al.  112-Tb/s space-division multiplexed DWDM transmission with 14-b/s/Hz aggregate spectral efficiency over a 76.8-km seven-core fiber. , 2011, Optics express.

[23]  D.T. Neilson,et al.  Wavelength-selective 1/spl times/K switches using free-space optics and MEMS micromirrors: theory, design, and implementation , 2005, Journal of Lightwave Technology.

[24]  Takehiro Tsuritani,et al.  First Demonstration of MC-EDFA-Repeatered SDM Transmission of 40 × 128-Gbit/s PDM-QPSK Signals per Core over 6,160-km 7-core MCF , 2012 .

[25]  L. Nelson,et al.  Space-division multiplexing in optical fibres , 2013, Nature Photonics.