Copyright©2014 NTT corp. All Rights Reserved.

SAFARI Project Scalable and Flexible optical Architecture for Reconfigurable Infrastructure

1

October 16th 2014

Technical University of Denmark Coordinator (EU) Toshio Morioka NTT Corporation Coordinator (JP) Yutaka Miyamoto

2 Copyright©2014 NTT corp. All Rights Reserved.

1980 1990 2000 2010 2020 Year

2030

：Research (without SDM) ★

：Commercial system in NTT

★ ：Research (with SDM)

★ ★ ★ ★

★ Electrical TDM

★

★ WDM & Optical Amplification

★ ★

★

100 M

1 G

10 G

100 G

1T

10 T

100 T

1 P

Cap

acity

per

fibr

e [b

/s]

10 P

10 M

Physical Limit of Conventional fibre

Fibre-Launched Power Limit Nonlinear Shannon Limit

★

★ ★ ★

Digital Coherent Transport

20 T/fibre

400G/ch.

Demand for Scalable Optical Transport Network

8T/fibre

100G/ch.

Scalable Technologies for future OTN needed

3 Copyright©2014 NTT corp. All Rights Reserved.

International standardisation of Flexible Grid and the first application to 400 Gbps transport over OTN

Japan has contributed significantly to the standardisation of flexible grid in ITU-T SG15

400G super channel (16QAM x 2subcarriers） High capacity based on multicarriers

（super channels） Variable bandwidth (Freq. Slot) ⇒N x 6.25 GHz The anchor frequency (the same) ⇒193.1 THz （1552.52 nm)

Future WDM network

68.75 GHz Freq.

50 GHz 25 GHz

100G 10G

4 slots 8 slots 11 slots

High speed single carrier signal Fixed Frequency Grid: ⇒N x 12.5 GHz The anchor frequency (the same) ⇒193.1 THz （1552.52 nm)

100G （QPSK）

50 GHz

10G

50 GHz 50 GHz

100G （QPSK） 40G

Today’s WDM network

Freq.

QAM: Quadrature Amplitude Modulation

4 Copyright©2014 NTT corp. All Rights Reserved.

Overview of the SAFARI project

SDN Controller

Openflow/SDN extension for novel programmability

Interface implementation for novel programmability EMS

Multicore Erbium-Doped Fibre Amplifier

(MC-EDFA)

High Core Count Single Mode Multicore Fibre

(HCC-SM-MCF)

High Core Count Single Mode Multicore Fibre

(HCC-SM-MCF)

DSP ・ ・ ・ ・ ・ ・ ・ ・ ・ Tx Rx DSP

Low-power pump

Multicore fibre

SMF

MMF

5 Copyright©2014 NTT corp. All Rights Reserved.

EU and Japan collaborations on the SAFARI project (Scalable and Flexible optical Architecture for Reconfigurable Infrastructure)

Space Division Multiplexing (SDM) (SDM multiplicity)

Programmable Signal Bandwidth (subcarrier numbers)

Scalable Optical Transport Network (OTN) with Manageable Flexibility Control

Programmable Spectral Efficiency (modulation formats)

EU team - Technical Univ. of Denmark (DTU) - Southampton Univ. (UOS) - Coriant R&D GmbH (COR)

Japan team - Nippon Telegraph and Telephone Corporation (NTT) - Fujikura Ltd. (FUJ)

Network control of programmable function Interworking functions for programmable control Design and verification of programmable function Design and system verification of SDM systems Detail design and fabrication of multicore fibre Design and fabrication of multicore fibre amplifiers Testbed verification

DTU UOS COR NTT FUJ

6 Copyright©2014 NTT corp. All Rights Reserved.

Working package structure

7 Copyright©2014 NTT corp. All Rights Reserved.

EMS

SDN Controller

Openflow/SDN extension for novel programmability

Interface implementation for novel programmability

WP3 Programmable optical hardware

Programmability utilization design for scalable network provisioning Scalable control of carrier network with an optimum degree of programmability

Interworking between SDN and Physical Layer Abstraction of information from programmable elements and the fiber links and implementation of intermediate layer

Programmable functions of L0/L1 Develop and verify various flexible features of programmable optical hardware including carrier-number, modulation format etc.

Verification and establishment of a control scheme for optical transport programmability beyond 400 Gb/s

8 Copyright©2014 NTT corp. All Rights Reserved.

WP4 Super capacity optical transport networks

TDM/WDM TDM/WDM/SDM

SDM-MUX

WDM-MUX

Multicore EDFA

SDM-DEMUX Ch.1

Ch.n

Ch.1

Ch.m

Ch.1

Ch.n

Multicore fibre

Txs Rxs

Sign

al

proc

essi

ng

Investigation and development of MCF-based SDM technologies with high core counts toward super-capacity optical transport networks

Single-mode multicore fibre

・ ・ ・

Multicore fibre

• Multicore fibres

• Multicore EDFA

• Signal processing for SDM

Sign

al

proc

essi

ng

9 Copyright©2014 NTT corp. All Rights Reserved.

WP3 Programmable Optical Hardware

WP4 Super high capacity OTN

SAFARI project

WP5 Testbed

2014 2015 2016 YEAR 2017 PJ Start PJ End

WP5 Testbed

Joint Testbed @ Coriant

MCF Testbed@NTT (test1) (test2)

Interwork Testbed ＠NTT / Coriant

The core technologies for future scalable Optical Transport Network in WP3 and WP4 are combined to be tested in the testbed of WP5

Oct. Sept.

Review Review Review

10 Copyright©2014 NTT corp. All Rights Reserved.

Summary

Impact on society (commercialisation and standardisation) ◆ High speed digital signal processing technologies at more than 400G and SDN- based control technologies offering flexible functionality is the key for future OTN ◆ Capacity scaling of super channels is expected through various combinations of wavelength division and space division multiplexing for channel capacities beyond 400 Gbps

Technical feasibility ◆ EU team is a world leader in SDN-controlled transport layer systems ◆ Japan team is a world leader in real-time high-speed DSP-ASICs ◆ Japan team has world leading expertise in MCF transmission technology ◆ EU team has world leading expertise in SDM optical amplification technology

Advantages of EU-Japan collaboration ◆ Sharing technical roadmap on the evolution for managing flexibility in future scalable OTN ◆ Proposal of international standards for future interoperability through wide-scope open innovation based on the world leading technologies from the EU and Japan

Significance of EU-Japan R&D collaboration

11 Copyright©2014 NTT corp. All Rights Reserved.

Reference

Cladding Pumped Fibre Devices