Jan Radil, Josef Vojtěch, Miroslav Karásek
www.ces.net
Innovative Devices for Dark Fibre Networks
September 19, 2007
4th CEF WorkshopPraha, Czech Republic 2
Innovative devices for dark fibre networks
Outline
Motivations
Results
Conclusions
September 19, 2007
4th CEF WorkshopPraha, Czech Republic 3
The same old story:-) Utilization of dark fibres – CEF networks (the first DF line lighted in 1999,
2.5 Gb/s PoS)
National Research and Educational Networks (NRENs) rely on leased dark fibres and prefer to have no active components between the transmitter and the receiver
Repeater-less or better Nothing-in-line (NIL) approach
Cost effective deployment of multi-gigabit lines (N x 1 GE, N x 10 GE)
Single fibre bidirectional N x 10 GE transmission
It is time to start to seriously talk about 40 G or even higher speeds (GN2-JRA4, a new NGN workshop, and of course HSSG)
To make these innovative devices ready for deployment
Innovative devices for dark fibre networks
Motivations
September 19, 2007
4th CEF WorkshopPraha, Czech Republic 4
Optical amplifiers EDFAs
boosters, preamps, inlines, 2in1 Raman
amplification only – extending reach TDM pumped Ramans to suppress transient effects in long
haul DWDM networks
Deployment since May 2004
Innovative devices for dark fibre networks
What is done
September 19, 2007
4th CEF WorkshopPraha, Czech Republic 5
Tuneable compensators of chromatic dispersion Not only FBG but Gires-Tournois etalons FBG for speeds above 10 Gb/s Up to 160 Gb/s optical signals
Optical crossconnects or switches Clever patchpannels
8 x 8 matrix (1 to 1) With additional features
multicasting (1 to many)
Wavelength convertors and 2R regenerators SOA based
Innovative devices for dark fibre networks
New equipment
September 19, 2007
4th CEF WorkshopPraha, Czech Republic 6
Based on the CLA design Seems to be a good idea and decision ‚A new peripheral device only‘ Modular, management capabilities, upgrades, redundant
Important for higher speeds and lightpaths
Innovative devices for dark fibre networks
New equipment – tuneable FBGs
September 19, 2007
4th CEF WorkshopPraha, Czech Republic 7
Not so known as FBGs or DCFs Very low insertion loss Commercial availability limited
Important for higher speeds and lightpaths
Innovative devices for dark fibre networks
New equipment – Gires-Tournois etalons
September 19, 2007
4th CEF WorkshopPraha, Czech Republic 8
8 x 8 switching matrix (from a commercial vendor) Pretty raw, some interface for NOC folks really needed
Again, the basic idea from the CLA designWeb based management - GUI
User accounts with different privileges (configure/check) AAA if needed, LDAP Time scheduler for sharing of expensive resources
International links (lambdas) Power PCs ‚I would like to get a 10G link from 2 a.m. to 6 a.m. for my
experiments‘ Perhaps the most important thing
Innovative devices for dark fibre networks
New equipment – Optical crossconnect
September 19, 2007
4th CEF WorkshopPraha, Czech Republic 9
Innovative devices for dark fibre networks
New equipment – Optical crossconnect
September 19, 2007
4th CEF WorkshopPraha, Czech Republic 10
Different requests GUI useful and perhaps needed
True optical multicast, not SONET/SDH drop and continue or port mirroring known from routers/switches
Protocol agnostic, 1 to many (limited by optical losses but can be compensated for by amplifiers)
Allows combinations of switching and multicasting from 1:1 to 1:4
Again, the basic idea from the CLA designWeb based management
User accounts with different privileges (configure/check) AAA if needed, LDAP Time scheduler for sharing of expensive resources
Innovative devices for dark fibre networks
New equipment – Optical multicast
September 19, 2007
4th CEF WorkshopPraha, Czech Republic 11
Innovative devices for dark fibre networks
New equipment – Optical multicast
September 19, 2007
4th CEF WorkshopPraha, Czech Republic 12
Innovative devices for dark fibre networks
New equipment – Optical multicast
September 19, 2007
4th CEF WorkshopPraha, Czech Republic 13
Based on SOAs Can be done with HNLF but high optical powers
necessary
10 Gb/s, tested up to 40 Gb/s RZ signalsTested in our lab, more difficult to make a ‚black box‘ ready for deployment (polarization sensitive, more control elements)
Innovative devices for dark fibre networks
New equipment – Conversions/Regenerations
September 19, 2007
4th CEF WorkshopPraha, Czech Republic 14
As with static DWDM multigigabit links (Brno-Bratislava, Brno-Vienna) you can start to deploy new innovative devices
Our presentation with photos from CEF 2006
It is not fantasy
Used during demos@GLIF yesterday and the day before yesterday
And in CESNET experimental facility CzechLight and network CESNET2
Innovative devices for dark fibre networks
Conclusions I.
Conclusions
September 19, 2007
4th CEF WorkshopPraha, Czech Republic 15
These innovative devices must be ready for deployment, in other words NOC folks should find most of ‚standard‘ features
If anybody is interested please let us know
Innovative devices for dark fibre networks
Conclusions II.
September 19, 2007
4th CEF WorkshopPraha, Czech Republic 16
[1] Vojtěch, J. - Karásek, M. - Radil, J. , „All-Optical Chromatic Dispersion Compensation In Long-Haul Transmission Over 225km – With No Inline Amplification “, In: CSN 2007.[2] Petr Holub, Josef Vojtech, Jan Radil, et. al, „ Pure Optical (Photonic) Multicast“, GLIF 2007 Demo, Praha, 2007.
[3] Vojtěch, J. „CzechLight and CzechLight Amplifiers “, In: 17th TF-NGN Zurich, 2005.
Innovative devices for dark fibre networks
References
September 19, 2007
4th CEF WorkshopPraha, Czech Republic 17
Lada Altmanová, Jan Gruntorád, Martin Míchal, Václav Novák, Stanislav Šíma
And our new colleagues Jan Nejman and Miloslav Hůla for all SW related work
Innovative devices for dark fibre networks
Acknowledgements
September 19, 2007
4th CEF WorkshopPraha, Czech Republic 18
Innovative devices for dark fibre networks
Thank you for your attention!
Q & A
September 19, 2007
4th CEF WorkshopPraha, Czech Republic 19
Innovative devices for dark fibre networks