Superchannel generation and transmission for flex-grid optical networks using reconfigurable DP/MQAM/subcarriers

Extensive channel data rate, high spectral efficiency, and advanced digital signal processing using state-of-the-art electronics are the main features for next generation optical networks. These technologies are complementary integrated together to develop optical superchannel transmission. This paper demonstrates an optical comb source with variable number of subcarriers and apply reconfigurable modulation and transmission reaching DP-16QAM/23Gbaud/23subcarriers, i.e. data rate of 4.2Tbps over 4.6nm spectral region and spectral efficiency of 7.36 b/s/Hz.

[1]  T. Sakamoto,et al.  Asymptotic formalism for ultraflat optical frequency comb generation using a Mach-Zehnder modulator. , 2007, Optics letters.

[2]  C. Koos,et al.  Coherent terabit communications using a quantum-dash mode-locked laser and self-homodyne detection , 2015, 2015 Optical Fiber Communications Conference and Exhibition (OFC).

[3]  Songnian Fu,et al.  Performance Comparison of Offset-16QAM and 16QAM for Nyquist WDM Superchannel With Digital Spectral Shaping , 2015, Journal of Lightwave Technology.

[4]  Jianjun Yu,et al.  Generation of Coherent and Frequency-Locked Multi-Carriers Using Cascaded Phase Modulators for 10 Tb/s Optical Transmission System , 2012, Journal of Lightwave Technology.

[5]  D. Trommer,et al.  80GHz balanced photodetector chip for next generation optical networks , 2014, OFC 2014.

[6]  Xiang Liu,et al.  Superchannel for next-generation optical networks , 2014, OFC 2014.

[7]  Takehiro Tsuritani,et al.  1.03-Exabit/s.km Super-Nyquist-WDM Transmission over 7,326-km Seven-Core Fiber , 2013 .

[8]  Liam P. Barry,et al.  Flexible optical comb source for super channel systems , 2013, 2013 Optical Fiber Communication Conference and Exposition and the National Fiber Optic Engineers Conference (OFC/NFOEC).

[9]  Peter J. Winzer,et al.  1.5-Tb/s Guard-Banded Superchannel Transmission over 56× 100-km (5600-km) ULAF Using 30-Gbaud Pilot-Free OFDM-16QAM Signals with 5.75-b/s/Hz Net Spectral Efficiency , 2012 .

[10]  C. Li,et al.  432-Gb/s Direct-Detection Optical OFDM Superchannel Transmission Over 3040-km SSMF , 2013, IEEE Photonics Technology Letters.

[11]  Nan Chi,et al.  Stable Optical Frequency-Locked Multicarriers Generation by Double Recirculating Frequency Shifter Loops for Tb/s Communication , 2012, Journal of Lightwave Technology.

[12]  D. M. Pataca,et al.  Cascade of amplitude- and phase-modulator in four different configurations of superchannel generation , 2013 .

[13]  Yan Yan,et al.  400-Gbit/s free-space optical communications link over 120-meter using multiplexing of 4 collocated orbital-angular-momentum beams , 2015, 2015 Optical Fiber Communications Conference and Exhibition (OFC).