CPqD’s optical network - Miquel Garrich

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CPqD’s optical network - Miquel Garrich

  1. 1. CPqD’s optical network activities and collaboration opportunities Miquel Garrich – miquel@cpqd.com.br Futurenets workshop – 24th February – Campinas, Brasil
  2. 2. Optical networks and amplifiers team Júlio C. R. F. Oliveira: Head of Optical Technology Division Neil Guerrero: Lead of High Speed Optical Networks group Juliano R. F. Oliveira: Technical coordinator Uiara Moura Anderson Bravalheri André Rolim 2 André Rolim Camila de Araujo Eduardo Magalhães Heitor Carvalho Bruno Angeli Israel Jacob João Januário Miquel Garrich Francisco Helder
  3. 3. Outline • Optical amplification • WSS-based ROADM 3 • Optical SDN controller • Add/drop on demand for ROADMs • (raw) Collaboration opportunities
  4. 4. EDFA: Motivation • EDFAs are key components in optical links/networks • EDFAs perform nice regeneration of signal power • However: 4 • Source of system noise • Gain depends on wavelength • Thus, when choosing the (set/operating point) gain: • Choice on the Noise Figure (NF) • Choice on the Gain Flatness (GF)
  5. 5. EDFA: Characterization • Preamplifier 5 • Booster
  6. 6. EDFA: Fitness function 6
  7. 7. EDFA: Results Juliano, Eduardo, Uiara, Giovanni, Alberto, Luis Hecker, Edson, Júlio, J. Maranhão (Padtec), collaboration with DTU in OFC 2013 7
  8. 8. EDFA: Results 8 Uiara C Moura, Juliano R F Oliveira, Júlio C R F Oliveira, Amílcar C Cesar in SBMO/IEEE International Microwave Optoelectronics Conference (IMOC), 2013
  9. 9. Outline • Optical amplification • WSS-based ROADM 9 • Optical SDN controller • Add/drop on demand for ROADMs • (raw) Collaboration opportunities
  10. 10. WSS: Motivation • Constrained choices on the EDFA gain (NF,GF) • WSS equalization for spectrum flatness ROADM 10 EDFA WSS
  11. 11. WSS: Characterization (local equalization) 11
  12. 12. WSS: Results (global equalization) 12 Eduardo Magalhães, Juliano, Heitor Carvalho, Matheus Magalhães, Miquel Garrich, Marcos Siqueira, Aldário Bordonalli (Unicamp), Júlio, “Global ROADM-Based Spectrum Equalizer in SDN Architecture for QoT Optimization at DWDM Networks” W2A.35 in OFC 2014
  13. 13. Outline • Optical amplification • WSS-based ROADM 13 • Optical SDN controller • Add/drop on demand for ROADMs • (raw) Collaboration opportunities
  14. 14. O-SDN in CPqD • Specialized HW • Network operating system communication • Network functions and services • Communication interfaces 14 interfaces • Graph network abstraction • Legacy control plane virtualized (GMPLS) • Global network monitoring • Adaptive, cognitive and autonomous performance optimization
  15. 15. O-SDN: YANG modeling for O-NE-OS • NETCONF-modeling language YANG models ROADM building blocks and its interconnections. • Eases Optical-Network Elements-Operating System (O-NE-OS) • The YANG model can be transformed ROADM with 15 in a Multi-graph = (nodes, edges) • Allows creating a ROADM abstraction • Supports Intra-node, constraint-based path computation using graph traversal 3 WSS KEY: Black nodes: Chassis system (model) NE Black Edges: NE interfaces Red nodes: Input interfaces Red edges: Connectivity NE (ACTIVE) Blue nodes: Output interfaces Blue edges: Connectivity NE (PASSIVE) Orange edges: Fibers connecting OUT -> IN interfaces
  16. 16. O-SDN: Automatic VON instantiation • Optical network virtualization: • HS-VON (High Speed Virtual Optical Network): Optical network for 100Gbps channels and beyond • Aims to avoid excessive signal degradation • Main-VON: Legacy optical network for signals with rate lower than 100 Gbps 16 LSP Creation Marcos Siqueira, Juliano, Giovanni Curiel, Alberto Hirata, Fabian van ’t Hooft, Marcelo Nascimento, Christian Rothenberg and Julio “An Optical SDN Controller for Transport Network Virtualization and Autonomic Operation”, in GLOBECOM 2013
  17. 17. Outline • Optical amplification • WSS-based ROADM 17 • Optical SDN controller • Add/drop on demand for ROADMs • (raw) Collaboration opportunities
  18. 18. ADoD: Motivation • CPqD is currently developing a ROADM-NG platform with express banks: • Broadcast and select • Route and select • Add/drop banks that support: Broadcast and Select Degree Inputs Degree Outputs 1 N 1 N Towards / from add/drop bank Developed 18 Coupler / splitter WSS KEY: • Colorless: Add/drop ports are not associated to a specific wavelength. • Directionless: Add/drop ports are not associated to a specific ROADM input or output port. • Contentionless: Wavelength repetition inside the same add/drop bank is allowed (up to ROADM degree size). • Flexible grid: Reconfigurable spectrum slots of 12,5 GHz add/drop bank Route and Select Degree Inputs Degree Outputs 1 N 1 N Towards / from add/drop bank Under development
  19. 19. ADoD: Motivation (2) Broadcast and Select Degree Inputs Degree Outputs 1 N 1 N Towards / from Route and Select Degree Inputs Degree Outputs 1 N 1 N Towards / from Under development 19 WSS-ADB MCS-ADB VS-MCS-ADB Possible wavelength contention Coupler / splitter (Variable-splitter) multicast switchKEY: (VS-)MCSWSSEDFA • Add/Drop Banks (ADBs) proposed in the literature: …k … m RxRx Rx … m RxRx Rx …k … m TxTx Tx … m TxTx Tx 1 N 1 N… … …k … m RxRx Rx 1 MCS … m RxRx Rx MCS N …k … m TxTx Tx 1 MCS … m TxTx Tx MCS N… … …k … m RxRx Rx 1 VS-MCS … m RxRx Rx VS-MCS N …k … m TxTx Tx 1 VS-MCS … m TxTx Tx VS-MCS N N-1… N-1 … … … Towards / from add/drop bank Towards / from add/drop bank
  20. 20. ADoD: Idea • Add/drop bank on demand (ADoD) consists of an optical backplane that interconnects fibers from/to each degree, different modules, transmitters and receivers. From degree 1 N 1 N Towards degree… … From degree 1 32 From degree 1 32 1 32 From degree i. ii. iii. 20 RxRxRx Optical Backplane … k×m Rx TxTxTx … k×m Tx …k … ADoD modules …k …k …k RxRxRxRxRxRxRxRxRxRxRxRx Backplane cross-connections TFA RxRxRxRxRxRxRxRxRxRxRxRx RxRxRxRxRxRxRxRxRxRxRxRx i. Example of a synthesized ADoD (only drop direction) ii. # signals from degrees 1 and 2 increase. Two modules of EDFA + splitter and a module of tunable filter array are shared. iii. # signals from 1 and 2 decrease (handled by direct backplane cross- connections). EDFA + WSS module for incoming signals from 3.
  21. 21. ADoD: Flexibility analysis WSS-ADB MCS-ADB VS-MCS-ADB • Flexibility and losses of Add/Drop Banks (ADBs) porposed in the literature: …k … m RxRx Rx … m RxRx Rx …k … m TxTx Tx … m TxTx Tx 1 N 1 N… … …k … m RxRx Rx 1 MCS … m RxRx Rx MCS N …k … m TxTx Tx 1 MCS … m TxTx Tx MCS N… … …k … m 1 VS-MCS … m VS-MCS N …k … m 1 VS-MCS … m VS-MCS N N-1… N-1 … … … 21 2 3 4 5 6 7 8 9 10 0 100 200 300 400 500 600 700 Node degree (N)Flexibilityindex ADoD VS-MCS-ADB MCS-ADB WSS-ADB • Flexibility and losses of Add/Drop on Demand: RxRxRx 1 Optical Backplane … k×m Rx N 1 N TxTxTx … k×m Tx …k … ADoD modules …k …k …k … … m RxRx Rx m RxRx Rx m TxTx Tx m TxTx Tx W1C.2 in OFC 2014 Miquel Garrich, Juliano, Marcos Siqueira, Norberto Amaya, Georgios Zervas, Dimitra Simeonidou, Júlio, “Flexibility of Programmable Add/Drop Architecture for ROADMs”
  22. 22. Outline • Optical amplification • WSS-based ROADM 22 • Add/drop on demand for ROADMs • Optical SDN controller • (raw) Collaboration opportunities
  23. 23. (raw) Collaboration opportunities 23 • Is there room for Impairment Aware – NFV / VON? • Network performance can be improved!
  24. 24. Thank you! Let’s collaborate! Thank you! Obrigado! www.cpqd.com.br miquel@cpqd.com.br

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