膨張する幹線トラフィックに対応する超高速トランスポート
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1 Ultra-High-Speed Core Transport to Handle Rapid Growth in Traffic 塩田昌宏 横田泉 菅谷靖 斉藤成明 荻原裕史 あらまし 40 Gbps100 Gbps FLASHWAVE 9500FLASHWAVE S660 Abstract There has recently been a speed up of mobile traffic, spread of optical access, and increase in speed and capacity of communication between data centers for purposes such as cloud services. This has caused a rapid increase in traffic in the core transport network and handling it is becoming an urgent challenge. Including international submarine networks, the core transport network is transitioning from 40 Gb/s to 100 Gb/s WDM. In these circumstances, Fujitsu has successfully developed digital coherent technology which is expected to dramatically improve the efficiency of wavelength usage compared to existing technology. This new technology has been applied to an optical transport system for terrestrial FLASHWAVE 9500 and submarine FLASHWAVE S660, and released as a product. This paper gives an overview of technology that is expected to help solve problems caused by the continuous increase in the amount of traffic. 698 FUJITSU. 63, 6, p , 2012
2 まえがき LTE Long Term Evolution GbE Tbps 40 Gbps Tbps 10 Gbps 120 DWDM Dense Wavelength Division Multiplexing FLASHWAVE 9500 FLASHWAVE S660 技術パラダイムシフト 40 Gbps100 Gbps 4 db 1 DP-QPSK Dual Polarization-Quadrature Phase Shift Keying 図 -1 2 DP-QPSK Gbps 25 Gbps framer/ FEC encoder 32 Gbps data 2 QPSK QPSK 32 Gbps data 2 フ ー 90 Hybrid 90 Hybrid 32 Gbps data 4 ADC/ DSP Q framer/ FEC encoder I t t Q I t t Q I -1 FUJITSU. 63, 6 11,
3 50 GHzWDM CMOS 3 khz 4 40 Gbps 1 ps/nm デジタルコヒーレント技術がもたらす効果 Tbps 100 Gbps Tbps 40 Gbps 90 ms 図 -2 ートA 2span 200 km ps/nm 10 ps ンストー ートB 5span 500 km ps/nm 50 ps ート に る ms FUJITSU. 63, 6 11, 2012
4 製品開発 メトロネットワーク向けFLASHWAVE 9500 FLASHWAVE 9500 図 -3 IP Internet Protocol SONET/SDH Synchronous Optical NETwork/Synchronous Digital Hierarchy DWDM IP SONET/SDH DWDM DWDM 88 Add/DropROADM Reconfigurable Optical Add/Drop Multiplexer km SONET/SDHTDM Time Division Multiplex IPL2 2 SONET/SDH IP Ethernet EoS Ethernet over SONET DWDM LTE 10 Gbps DWDM Gbps 2012 FLASHWAVE Gbps ラ ROADM ット DWDM ン フ ース TDM DWDM ン フ ース ン ー ーク ー ット /TDM ー ス ッ フック 100 G トランスポン ー ックスポン ー DWDM ン フ ース ー ット TDM ン フ ース ン フ ース FLASHWAVE 9500 High Density Shelf ット ーク ット ス に応 ック る ス する FLASHWAVE 9500 トランスポン ー 100 G ー ット OTU4 に対応 ックスポン ー 1010 Gbps 10 G ー ット に対応 -3 FLASHWAVE 9500 FUJITSU. 63, 6 11,
5 100 Gbps TDM IP OTN Optical Transport Network TDM 960 G Packet 1.2 T OTN 2.4 T 海底長距離伝送向けFLASHWAVE S660 FLASHWAVE S660 FLASHWAVE S km 40 Gbps Tbps 90 WDM 1 Dummy Light 9000 km WDM Pre-Emphasis OTN IP SONET/SDH FLASHWAVE 9500 図 -4 今後の展望 図 -5 DP-QPSK 24 16QAM 100 Gbps 4 ch 400 Gbps200 Gbps 5 ch 1 Tbps 4 OADM 702 FUJITSU. 63, 6 11, 2012
6 ット ーク ー ン ン ー NOC NETSMART 1500 ス ー ー ン ット ーク 線 ット ーク FR FR FR ト ット ーク トット ーク 線 ット ーク ット ーク 100 G OTN ト S660 ット ーク FR E-Band E-Band ット ーク E-Band ンク 10G-EPON S660 L2 SW OEM 線 ク ス FEMTO ONU FEMTO Gbps DP-QPSK 400 Gbps 2 DP-16QAM 400 Gbps 4 DP-QPSK 1 Tbps 5 DP-16QAM 50 GHz 100 GHz 200 GHz 250 GHz a50 GHz 100 Gbps DP-QPSK 400 Gbps 2 DP-16QAM 400 Gbps 4 DP-QPSK 1 Tbps 5 DP-16QAM スー ー 20% 50 GHz 75 GHz 150 GHz GHz b Gbps FUJITSU. 63, 6 11,
7 むすび 100 Gbps40 Gbps 100 G 400 G/1 Tbps 参考文献 1 K. Kikuchi Phase-Diversity Homodyne Detection of Multilevel Optical Modulation With Digital Carrier Phase Estimation IEEE JOURNAL OF SELECTED TOPICS IN QUANTUM ELECTRONICS Vol.12 No.4 p H. Nakashima et al. Novel Wide-range Frequency Offset Compensator Demonstrated with Real-time Digital Coherent Receiver 34th European Conference on Optical Communication ECOC2008Mo.3 D.4 September E. amazaki et al. Fast Optical Channel Recovery in Field Demonstration of 100-Gbit/s Ethernet over OTN Using Real-time DSP OPTICS EPRESS Vol.19 No.14 p M. Jinno et al. Spectrum-Efficient and Scalable Elastic Optical Path Network: Architecture, Benefits, and Enabling Technologies IEEE Communications Magazine Vol.47 No.11 p H. Takara et al Pb/s 12 SDM/222 WDM/ 456 Gb/s Crosstalk-managed Transmission with 91.4-b/s/Hz Aggregate Spectral Efficiency 38th European Conference and Exhibition on Optical Communication ECOC2012Th.3 C.1 September FUJITSU. 63, 6 11, 2012
8 著者紹介 塩田昌宏 ( しおだまさひろ ) 100 G/400 G 斉藤成明 ( さいとうしげあき ) 横田泉 ( よこたいずみ ) 100 G 荻原裕史 ( おぎわらひろし ) 菅谷靖 ( すがややすし ) FUJITSU. 63, 6 11,
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