首次展示了基于MC-EDFA中继器的单模多芯光纤（MCF）上每芯40×128 Gbit/s偏振复用正交相移键控（PDM-QPSK）信号的超密集波分复用（SDM）传输，传输距离达6160公里，光纤为7芯。

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.

作者信息

Takahashi H, Tsuritani T, de Gabory E L T, Ito T, Peng W R, Igarashi K, Takeshima K, Kawaguchi Y, Morita I, Tsuchida Y, Mimura Y, Maeda K, Saito T, Watanabe K, Imamura K, Sugizaki R, Suzuki M

机构信息

KDDI R&D Laboratories Inc., Fujimino, Saitama, Japan.

出版信息

Opt Express. 2013 Jan 14;21(1):789-95. doi: 10.1364/OE.21.000789.

DOI:10.1364/OE.21.000789

PMID:23388971

Abstract

We demonstrate the first 7-core multicore erbium-doped fiber amplified (MC-EDFA) transmission of 40 x 128-Gbit/s PDM-QPSK signals over 6,160-km 7-core multicore fiber (MCF). The crosstalk (XT) from all of the other 6 cores of a MC-EDFA and a 55-km length MCF are about -46.5 dB and -45.6 dB at center core, respectively. The core-to-core rotation approach at every amplified span is used to average the XT of all cores. The averaged optical signal-to-noise ratio (OSNR) after 6,160-km transmission is 15.6 dB with 0.1 nm resolution bandwidth. The Q-factor of all 40 channels surpasses the threshold of the forward-error-correction of 6.4 dB with 1 dB margin after 6,160 km. The total net capacity is 28.8 Tbit/s per fiber and achieved capacity-distance product is 177 Pbit/s.km per fiber. We confirmed the feasibility of MC-EDFA repeatered systems for trans-oceanic transmission.

摘要

我们展示了在6160公里长的7芯多芯光纤（MCF）上首次实现40×128-Gbit/s偏振复用正交相移键控（PDM-QPSK）信号的7芯多芯掺铒光纤放大（MC-EDFA）传输。在中心芯处，MC-EDFA的其他6个芯以及55公里长的MCF的串扰（XT）分别约为-46.5 dB和-45.6 dB。在每个放大段采用芯间旋转方法来平均所有芯的XT。6160公里传输后的平均光信噪比（OSNR）为15.6 dB，分辨率带宽为0.1 nm。在6160公里后，所有40个通道的Q因子超过了前向纠错阈值6.4 dB，余量为1 dB。每根光纤的总净容量为28.8 Tbit/s，实现的容量距离积为每根光纤177 Pbit/s·km。我们证实了MC-EDFA中继系统用于跨洋传输的可行性。