FEUP, Porto, Portugal, December 2009 Design and ...maptele/workshop-map-tele... · 3 Motivations...
Transcript of FEUP, Porto, Portugal, December 2009 Design and ...maptele/workshop-map-tele... · 3 Motivations...
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Jacklyn D. Reis
António L. Teixeira
Universidade de Aveiro, Institituto de
Telecomunicações
Design and Optimization Next
Generation Passive All-Optical
Networks
2009 MAP-Tele Workshop
FEUP, Porto, Portugal, December 2009
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Outline
Introduction
Motivations
Achieved Results– GA based FWM-Minimization Algorithm
– MGA based Kerr-Minimization Algorithm
– Nonlinear analysis for Ultra-Dense WDM transmission
Future Works
Conclusions
References
2009 MAP-Tele Workshop
December 2009 | FEUP, Porto, Portugal
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Motivations
All-Optical Networks– Provide tens of Tb/s up to thousands of km;
– Dense WDM (Wavelength-Division Multiplexing) Systems
– Optical TDM (Time-Division Multiplexing) Systems
Limited Bandwidth– Optical Amplifiers (EDFA): ~25nm (3THz)
Increase the channel density for increasing the transmission capacity– Higher number of channels: >10
– Decrease the channel separation: <50GHz, 100GHz (ITU)
– Increase the bit rate per channel: >10Gb/s, 40Gb/s (ITU)
2009 MAP-Tele Workshop
December 2009 | FEUP, Porto, Portugal
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Motivations
Drawbacks– Optical Filtering
– Laser requirements: line-width, phase noise etc
– Existence of fiber nonlinear effects impairs the performance transmission
. Intra-Channel distortion: Self-phase modulation
. Inter-Channel crosstalk: cross-phase modulation and four-wave mixing
Solution– Optimize input transmitter parameters
2009 MAP-Tele Workshop
December 2009 | FEUP, Porto, Portugal
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Motivations
All-Optical Access Networks
Architecture– WDM Ring + TDM Trees deliver information down ONU (users)
. Wavelength planning
. Power budged
. Optimization of input transmitter parameters
2009 MAP-Tele Workshop
December 2009 | FEUP, Porto, Portugal
SARDANA: Scalable Advanced
Ring-based Passive Dense
Access Network Architecture
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Contributions
1. Nonlinear crosstalk minimization
algorithm– OFC’09, MOTL’09, OFC’10 (Sub.)
2. Analysis of fiber nonlinear effects– ICTON’09, ConTEL’09
3. Performance of Ultra-Dense
Transmission– OFC’10 (Sub.)
4. Wavelength Conversion: joint work– EL’09, PIS’09, OFC’10 (Sub.)
2009 MAP-Tele Workshop
December 2009 | FEUP, Porto, Portugal
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Achieved Results
1- FWM Crosstalk Minimization
Algorithm– Allocate input power per channel considering total transmitted
power constraint
– Small frequency tuning among channels
2009 MAP-Tele Workshop
December 2009 | FEUP, Porto, Portugal
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Achieved Results
2 - Nonlinear Crosstalk Minimization Algorithm– VTSF: Volterra Series Transfer Function Method
– MGA: Multi-objective Genetic Algorithm
2009 MAP-Tele Workshop
December 2009 | FEUP, Porto, Portugal
1. 1st Gen. MGA
2. Constraints
3. Update Tx
4. Transmission
5. Detection
6. Noise Estimation
7. Obj. Function
8. Solution
9. 2nd Gen. MGA
10. so on…
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Achieved Results
2 - Nonlinear Crosstalk
Minimization Algorithm– Experimental Demonstration: 16x10Gb/s at 50GHz;
– Optimization algorithm improved by 1dB;
2009 MAP-Tele Workshop
December 2009 | FEUP, Porto, Portugal
PC: polarization controller; MZM: Mach-Zehnder modulator; PRBS: pseudo-random binary
sequence; EDFA: erbium-doped fiber amplifier; OSA: Optical Spectrum Analyzer; OPAR:
optically pre-amplified receiver; BERT: BER tester.
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Achieved Results
3 – Performance of Ultra-Dense
Transmission (Nx1Gb/s)– Analyze the impact of inter-channel crosstalk in Ultra-
Dense transmission at 1Gb/s per channel
. Channel separation: < 25GHz
. Number of channels: > 50
2009 MAP-Tele Workshop
December 2009 | FEUP, Porto, Portugal
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Future Works
Long-Haul Coherent Optical
Transmission– Single-channel multi-level modulation formats (QPSK,
8PSK, 16QAM)
– Multi-channel multi-level modulation formats (QPSK,
8PSK, 16QAM)
– Single-channel OFDM
Objective– Developing a nonlinear-compensator scheme to
optimize the transmission performance
– Validate through experiments
2009 MAP-Tele Workshop
December 2009 | FEUP, Porto, Portugal
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Conclusions
1. Optimization of Passive All-Optical
Networks based on WDM ring +
TDM Trees
2. Analysis of Fiber Nonlinear Crosstalk
3. Ultra-Dense multi-channel
transmission
4. Coherent Optical Transmission
2009 MAP-Tele Workshop
December 2009 | FEUP, Porto, Portugal
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Acknowledgement
Collaborators– António Teixeira, Berta Neto, Miguel Drummond,
Cláudia Reis, Liliana Costa, Paulo André, RogérioNogueira, N. Wada, S. Shinada.
Projects: EURO-FOS, SARDANA, BONE
Partners: FCT, NiCT
Thank you!
2009 MAP-Tele Workshop
December 2009 | FEUP, Porto, Portugal