OFC’10 Summary
---Core Networks Part III
Avishek Nag
OFC’10 Technical Sessions on Core
Networks
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OMM: Path Computation and Routing I
OMU: Path Computation and Routing II
OThP: High Speed Routing
OTuG: Network Architecture and Control I
OWR: Network Architecture and Control II
OWH: Restoration and Protection
OTuK: Quantum Communication Symposium II: Networking
OWM: Advanced Networking Technologies
OWY: Energy Efficiency and Next-Generation Networks
OFC’10 Technical Sessions on Core
Networks
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OTuK: Quantum Communication Symposium II: Networking
OWM: Advanced Networking Technologies
OWY: Energy Efficiency and Next-Generation Networks
NFOEC’10 Technical Sessions on Core
Networks
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NTuA:
NThA:
NThE:
NMD:
NWA:
NThF:
NMB:
NTuB:
NWC:
Network Design
Network Restoration
Multi-Layer Networks
Converged Networks
Advanced Network Applications
Next Generation Optical Network Technology
Migrating to 100G
High Speed Network Technologies
Network Testing and Characterization
Quantum Communications Symposium II
Code
OTuK1
OTuK2
Title
Author/Affiliate
Quantum
Communications in
Reconfigurable
Optical
Networks: DWDM
QKD through a
ROADM
N. A. Peters et
al.;colaboration
between Telcordia
Tech., Los
Alamos Natl. Lab
and Laboratories
for Telecomm.
Science, USA
Quantum Key
Distribution on a
10Gb/s WDM-PON
I. P. S. Choi and
P. D. Townsend
University College
Cork, Ireland
Topic
Demonstrates coexistence
of classical and quantum
signals for
quantum key distribution in
a DWDM reconfigurable
networking environment
using a ROADM. shows
how the limiting noise
mechanism can depend on
the link configuration.
Trends
Efficient
methods of
quantum
key
distributions
Demonstrates the first 10GHz
in optical
clock-rate, differential-phasenetworks
shift-keyed quantum key
distribution system on a
10Gb/s multi-user WDM-PON
network. A dual feeder fiber
scheme is used to reduce
spontaneous Raman
scattering-induced interchannel cross-talk.
Quantum Communications Symposium II
Code
OTuK3
OTuK4
Title
Implementation of a
High-Speed Quantum
Key Distribution
System for
Metropolitan
Networks
An applicationoriented hierarchical
quantum
cryptography network
test bed
Author/Affiliate
Akihisa Tomita
et al.; NEC
Corporation,
Japan
Zheng-Fu Han et
al.; UST China
and
Information Engg.
Institute, China
Topic
A solution for high-speed
QKD system
equipped with low
loss receivers with high
visibility, highly efficient
photon detectors with small
dark count
probability, and a stable
clock synchronization
system is proposed.
A hierarchical metropolitan
quantum cryptography
network upon the inner-city
commercial telecom fiber
cables is reported in this
paper.
Trends
Efficient
methods of
quantum
key
distributions
in optical
networks
Quantum Communications Symposium II
Code
OTuK5
Title
Author/Affiliate
Topic
Passive Decoy State
Quantum Key
Distribution with
Coherent Light
Marcos Curty et
al.; Univ. of Vigo,
Spain, Univ. of
Waterloo, Canada,
University of
Toronto, Canada,
University of
ErlangenNürnberg, Max
Planck Institute
for the Science of
Light, Germany
Proposes a simple method
for passive preparation of
decoy states in quantum key
distribution with coherent
light. It involves linear optics
together with a photodetector. The
performance is comparable
to the active decoy schemes.
Trends
Efficient
methods of
quantum
key
distributions
in optical
networks
Advanced Networking Technologies
Code
Title
OWM1
Experimental demonstration
Chung-Yu Wu et of a novel sensing system
Ring Topology Based
based on FBG
Mesh Sensing System al.; National Tsing
Hua Univ. Taiwan, sensors with comprehensive
with Self-healing
self-healing capability in a
National Taipei
Function using FBGs
mesh-ring-based topology by
University of
and AWG
utilizing the
Technology
FSR and periodic filtering
Taiwan
characteristics of the AWG.
OWM2
Simultaneous 3 × 10Gbps Optical Data
Transmission
in 1-μm, C-, and Lwavebands Over a
Single Holey Fiber
for UltrabroadWaveband Photonic
Transport System
Author/Affiliate
Naokatsu
Yamamoto et al.;
NICT Japan,
Aoyama Gakuin
University Japan
Topic
Trends
Nonconventional,
off-the-shelf
Networking
Simultaneous 3 × 10-Gbps
Technologies;
error-free photonic
transmissions with clear eye- Hardware
Implementati
openings
are demonstrated in the 1-μm, on
C-, and L-wavebands by
using an ultrabroadwaveband photonic
transport system comprising a
3.3-km-long holey fiber
transmission line.
Advanced Networking Technologies
Code
OWM3
OWM4
Title
Author/Affiliate
Yixuan Qin et al.;
University of
Essex, UK,
Hardware Accelerated
Athens Institute of
Impairment Aware
Technology and
Control Plane
University of
Patras, Greece
Implementation of
High-speed Buffer
Management for
Asynchronous
Variable-length
Optical Packet Switch
Hideaki
Furukawa et al.;
NICT and Tokyo
Institute of
Technology,
Japan
Topic
A hardware accelerated QoT
estimation tool used in the
DICONET
impairment-aware optical
network. Performance
evaluation is given by
examining different network
scenarios in terms of network
size and number of
wavelengths.
An FPGA-based buffer
management hardware with 8
input ports, which
implements a parallel and
pipeline mechanism to support
over-200-Mpacket/s/port
asynchronous
variable-length optical packet
switching, is proposed.
Trends
Nonconventiona
l, off-theshelf
Networking
Technologie
s; Hardware
Implementa
tion
Advanced Networking Technologies
Code
Title
Author/Affiliate
Topic
OWM5
Recent Progress on
OTDM Terabit/s
Transmission and
Their Future
Toshihiko
OTDM transmission
Hirooka et al.;
experiments with 1.28Tb/s
Tohoku University,
signal over 70 km of fiber.
Japan
Trends
Energy Efficiency & Next Generation Networks
Code
OWY1
OWY2
Title
Advanced
Technologies for
Next-Generation
Fiber Networks
Energy Efficiency
Limits of Load
Adaptive Networks
Author/Affiliate
Milorad Cvijetic,
NEC Corporation
Christoph Lange
and Andreas
Gladisch,
Deutsche
Telekom
Laboratories,
Germany
Topic
Trends
Review of key advanced
technologies for nextgeneration optical networking.
Advanced physical layer
techniques for 100 Gb/s
transmission, packet-based
transport in core and metro
networks, and novel candidate Contribution
architectures for nexts towards
generation optical access.
energy
efficient
Network
Based on traffic models the
design
energy consumption of
adaptive networks is
compared to
networks with constant
power consumption.
Energy Efficiency & Next Generation Networks
Code
OWY3
OWY4
Title
On the Energy
Efficiency of MixedLine-Rate Networks
The role of Arrayed
Waveguide Gratings
in energy-efficient
optical switching
architectures
Author/Affiliate
Pulak
Chowdhury et al.;
UC Davis
E. Bonetto et al.;
Politecnico di
Torino, Italy
Topic
Evaluation of energy
efficiency of mixed-line-rate
(MLR)
optical networks. A
comparative study of energy
efficiency of MLR and singleline-rate (SLR)
networks shows that MLR is
more energy efficient than
SLR networks.
Proposes AWG based optical
switching fabric architectures
and demonstrates their
energy efficiency over
electronic backplanes and
interconnects
Trends
Contribution
s towards
energy
efficient
Network
design
Energy Efficiency & Next Generation Networks
Code
OWY5
OWY6
Title
Burst Switching for
Energy Efficiency in
Optical Networks
Energy-Awareness in
Dynamic Traffic
Grooming
Author/Affiliate
Topic
Shuping Peng
et al.; Peking
University, China
and University of
Melbourne,
Australia
Energy consumption of
electronic burst switching is
modeled and compared to
electronic packet switching
in the network core and
edge. It is shown that burst
switching
can
provide
significant energy savings
relative to packet switching.
M. M. Hasan et
al.; UT Dallas
Energy-efficient traffic
grooming scheme for
promoting greener optical
networks. The scheme
considers a modular node
architecture, reuses already
active components
during request allocations,
and conserves total energy
consumption in the network.
Trends
Contributions
towards
energy
efficient
Network
design
Migration to 100G
Code
NMB1
NMB2
Title
107Gb/s DPSK-3ASK
Optical Transmission
over SSMF
Economics of
100Gb/s Transport
Author/Affiliate
Topic
Brian T. Teipen
and Michael H.
Eiselt; ADVA AG
Optical
Networking,
Germany
Report on the transmission
of a 107Gb/s DPSK-3ASK
optical channel over 335km
fiber (SSMF). DPSK-3ASK
is targeted to meet the
requirements of a metro
network.
R. Saunders et
al.; Opnext Inc.,
USA
Spectrally-efficient 100Gb/s
coherent transponder
technology in carrier
networks can yield
substantial CAPEX and
OPEX savings. This paper
discusses these economic
gains and how a carrier can
maximize their return on
optical transport investment.
Trends
100G:
Solutions and
Economics
Migration to 100G
Code
NMB3
NMB4
Title
Reach-Optimized
Design for ULH Mesh
Networks
Network Innovations
Brought by Digital
Coherent Receivers
Author/Affiliate
Topic
Propose an approach that
first designs each ROADM-toROADM section independently
to minimize the OSNR penalty
Dah-Min Hwang; in each section. Then the whole
network is examined to see if
AT&T Labs, NJ,
adding ROADM sites to long
USA
sections would be beneficial for
reducing the
number of regenerations in all
possible paths.
Operational efficiency
improvements of optical
networks enabled by digital
Takeshi
coherent receivers are
Hoshida et al.;
discussed in view of reliability,
Fujitsu Limited,
agility, performance and
Japan and China reduced operational complexity.
Several specific
technologies are briefly
introduced to deliver some
more insight.
Trends
100G:
Solutions
and
Economics
High Speed Network Technologies
Code
NTuB1
NTuB2
Title
High Bit-Error
Tolerant Frame/Lane
Alignment
for 100 Gb/s MultiLane Transmission
Mapping and
Transport Standard
for OTU4
Author/Affiliate
Topic
Trends
Study of high bit-error
tolerant frame/lane alignment
for 100 Gb/s multi-lane
Takuya Ohara et transmission with
al.; NTT Network advanced modulation
formats. Bit-error
Innovation Lab.
allowance/correction for
Japan
frame/lane alignment
improves
Standards
the bit-error tolerance up to
and
BER of 10^-2
techniques
for high-bitRecently revised ITU-T
G.709 defines a container for rate transport
100 Gbps signals called an
OTU4. This
Mark Loyd
paper highlights some of the
Jones, Tellabs
reasons the OTU4 bit rate,
frame structure, and
mapping scheme were
chosen.
High Speed Network Technologies
Code
NTuB3
NTuB4
Title
ContinuouslyInterleaved BCH (CIBCH) FEC delivers
best
in class NECG for
40G and 100G metro
applications
Continuous Phase
Modulation as an
Alternative to QPSK
for
100 Gb/s Optical
Links
Author/Affiliate
Michael
Scholten et al.;
Vitesse
Semiconductor
Corp. USA
Thomas F.
Detwiler et al.;
Georgia Institute
of Technology
and Verizon Inc.,
USA
Topic
Trends
40G OTU3 performance
results for ContinuouslyInterleaved concatenated
BCH (CI-BCH) FEC,
demonstrating best-in-class
performance for a 7%
overhead hard-decision
FEC and offers option to
tradeoff coding gain for
Standards
reduced FEC decode latency. and
Constant envelope formats
techniques
including CPM may reduce
for high-bitthe impact of nonlinear
rate transport
impairments arising from
intensity variations and the
associated nonlinear phase
noise. The advantages of
CPM versus QPSK are
quantified and possible
deployment opportunities
are identified.
High Speed Network Technologies
Code
NTuB5
Title
Transparent WDM
Network with Bitrate
Tunable Optical
OFDM Transponders
Author/Affiliate
Topic
Trends
Axel Klekamp et
al.; Alcatel Lucent
Germany and
Alcatel Lucent
France
Reach estimations for
several variable-bitrate
OFDM schemes are
presented and
discussed in the framework
of a transparent EU core
network scenario. 44%
reduction on OE
interfaces is found
compared to a fixed-bitrate
40Gb/s network.
Standards
and
techniques
for high-bitrate
transport
Network Testing and Characterization
Code
NWC1
NWC2
Title
In-Service Chromatic
Dispersion and PassBand Shape
Measurements for
Light Path with
Modulated ASE
Source
In-Service OTDR for
Passive Optical
Networks
Author/Affiliate
Topic
A tunable modulated
broadband source and
narrow-bandwidth filter are
G. Wellbrock et used to
al.; Verizon and
measure chromatic
EXFO Electrodispersion, group-delay
Optical Engg. Inc. ripple, and pass-band shape
Canada
of DWDM-network light
paths. This new method is
simple and suitable for inservice measurements.
Y. Takushima
and Y. C. Chung
et al.; KAIST,
Korea
Proposes a novel in-service
optical reflectometry based
on the correlation detection
using a pseudo-noise signal
superimposed on the
downstream signal.
Using the proposed
technique, in-service
monitoring of TDM and WDM
PONs is demonstrated
Trends
Performance
Monitoring of
Networks
Network Testing and Characterization
Code
NWC3
NWC4
Title
Author/Affiliate
Determination of
Localized Loss in
Cabled Fiber Using
OTDR Measurements
of Relative Mode
Field Diameter
Demonstration of enhanced
sensitivity of a commercial
OTDR by employing novel
J. A. Nagel and bidirectional
S. L. Woodward; analysis techniques. The
AT&T Labs, NJ,
method is applicable to
USA
measurements of cabled
fiber where fluctuations
in local mode field diameter
are due to factory variations.
Optically Powered
Low-Energy
Demarcation Device
for Monitoring FTTx
Networks
Topic
Demonstration of an energyM. Roeger et al.;
autarkic FTTx monitor. A
Karlsruhe
special protocol and sophistiInstitute of
cated hardware reduce the
Technology and electrical operating power to
0.7μW, which can be
Alcatel Lucent
delivered by an optical
Germany
supply signal of only
5μW/monitor at a separate
wavelength.
Trends
Performance
Monitoring of
Networks
Network Testing and Characterization
Code
NWC5
NWC6
Title
Area-efficient 100G+
EFEC calculation with
Xilinx FPGAs
Intra-Channel
Chromatic Dispersion
Measurements with
Live Neighboring
Signals in a Long
Haul DWDM System
Author/Affiliate
Topic
Trends
This paper presents areaoptimized implementations of
Galois Field multipliers that
Michael Baxter
exploit the unique
and Gordon
programmable logic cells in
Brebner; Xilinix
the Xilinx FPGA, enabling a
Research Labs,
100 Gb/s EFEC block
USA
with significantly lower
footprint within an optical
transport FPGA.
Performance
Monitoring of
A novel four-tone probe
Networks
signal is used to measure
end-to-end residual
T. J. Xia et al.;
chromatic
JDSU Reasearch dispersion in single 50-GHz
Labs, USA
DWDM channels of a longhaul ROADM network while
transmitting
more than 30 live signals in
neighboring channels.
Conclusion
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Trends…
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Quantum key distribution in optical networks
Green networks
Advanced networking paradigms
Migration towards high bit rates and associated
technologies viz., OFDM, coherent receiver…
Real time performance monitoring