© 2015 Xtera Communications, Inc. Proprietary & Confidential 1
Massimo Leo – Director Technical Sales EMEA & Sales Europe – Xtera Communications
26 March 2015
TransNet 2015 (Moscow, Russia)
Maximizing Capacity Over Long-Distance Optical Networks Over Land, Under Water
© 2015 Xtera Communications, Inc. Proprietary & Confidential 2
A History of Innovation and Leadership
First and only to deploy 100nm
with SD-FEC in Terrestrial Networks (2011) and in Submarine Networks (2012)
First to deploy advanced 100G
240 x 10G channels (2004) using Raman technology
Both “active” and “passive” Line Monitoring for subsea repeaters (2007)
First to upgrade SLTE systems
World first wideband repeater
55nm / 130+ channels (2015) using Raman technology
World record 150 x 100Gb/s Unrepeatered over 410 km (2014)
World record unrepeatered capacity
© 2015 Xtera Communications, Inc. Proprietary & Confidential 3
Maximizing Capacity AND Reach
More symbols per second
Better SD-FEC (coding gain)
More bits per symbol
I
Q
1101
1100
1110
1111
1001
1000
1010
1011
0001
0000
0010
0011
0101
0001
0110
0111
Multiple carriers
More Spectral Efficiency (b/s/Hz)
Raman Photonics • More Bandwidth (up to 100nm) • More Reach
• Less noise • Less nonlinear effects
More Spectrum & Reach (nm & Km)
Higher Speed Silicon 100G, 400G & beyond
© 2015 Xtera Communications, Inc. Proprietary & Confidential 4
More Capacity in Long Haul applications for 100G, 400G and Beyond
Mastering Raman Amplification
Spectrum/ Capacity
Reach
3
2
240 channels
150 channels
80 channels
Up to 6 Times Better Tbps x Km
© 2015 Xtera Communications, Inc. Proprietary & Confidential 5
Raman control fully integrated, from
ground up
Unique, full in-house design and patented control algorithms
EDFA, EDFA/Raman, Raman
Unique Expertise
Largest Raman IP base since 1998: operations,
safety, design
Most advanced global engineering team
Seamless, Safe Applicability
Seamless & safe operations, no manual
intervention
Any aged fiber plant with standard
connectors
Xtera’s Wise RamanTM
Xtera’s Raman – Highest Optical Performance, Simple to Operate
Adding third-party Raman pump
modules to an existing EDFA DWDM control system cannot not
provide performance and efficiency
© 2015 Xtera Communications, Inc. Proprietary & Confidential 6
Wise RamanTM World Records – Unrepeatered Transmission
100G Unrepeatered Transmission across 100dB Loss Fiber
© 2015 Xtera Communications, Inc. Proprietary & Confidential 7
Wise RamanTM [Capacity – Reach] Metric in Terrestrial Networks
240 x 100G • 100nm spectrum • 50GHz channel spacing • 2 bit/s/Hz spectral efficiency
120 x 400G • 100nm spectrum • 16QAM 200G carriers
spaced 50 GHz apart • 4 bit/s/Hz spectral efficiency
160 x 400G • 100nm spectrum • 16QAM 200G carriers
spaced 37.5 GHz apart • 5.3 bit/s/Hz spectral efficiency
16QAM on more than 2,000 km of aged fiber (0.28 dB/km)
© 2015 Xtera Communications, Inc. Proprietary & Confidential 8
Wise RamanTM [Capacity – Reach] Metric in Terrestrial Networks
© 2015 Xtera Communications, Inc. Proprietary & Confidential 9
Raman Optical Repeater for Subsea Cable Systems
Innovation: Mechanical Marine grade titanium. Compact, light and strong.
Electrical Improved powering enabling Raman amplification.
Optical Modular optical design. Optical bandwidth increased by 50%.
Manufacturability Flexible and simplified manufacturing process.
Xtera repeater deployment
© 2015 Xtera Communications, Inc. Proprietary & Confidential 10
Ultra-Long Spans in 2,266 km OPGW (Amazonas) (Highest Span Loss: 63 dB)
ROADM
43 km
13.9 dB
237 km
53.8 dB
278 km 63.1 dB
ILA ILA ROADM
142 km
34.6 dB
ILA
138 km
33.1 dB
235 km
53.5 dB
ILA Villa
Camburão
ROADM
183 km
46.1 dB
141 km
33.9 dB
157 km
37.2 dB
ILA ILA ILA
91 km
23.8 dB
ILA
229 km
52.8 dB
ROADM
239 km
54.2 dB
110 km
27.2 dB
ROADM
ILA ILA
43 km
13.9 dB
Manaus TIM
Terra Santa Manaus Rod Lexuga
Silves Oriximiná
Macapá TIM
Jurupari
Macapá Sub Laranjal do Jari
Gopa Xingu Tucuruí Pacaja Vitória do Xingu
Core amplifier
Backward span extension module
Forward span extension module
G.652 fiber span
© 2015 Xtera Communications, Inc. Proprietary & Confidential 11
• OSNR requirements mandate Raman amplification for 100G/100G+ in long-haul applications
• Wise RamanTM minimizes the number of ILAs and regeneration sites over long optical data paths.
Wise RamanTM Benefits for Backbone Networks in Russia
Channel rate M
inim
um
required
OSN
R
10G 100G 200G
EDFA design
Raman design
More Capacity, More Distance Less Cost/Bit