Innovative Devices for Dark Fibre Networks

1. Innovative Devices for Dark Fibre Networks Jan Radil, Josef Vojtěch, Miroslav Karásek www.ces.net

2. Innovative devices for dark fibre networksOutline • Motivations • Results • Conclusions 4th CEF Workshop Praha, Czech Republic

3. Innovative devices for dark fibre networksMotivations • 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 4th CEF Workshop Praha, Czech Republic

4. Innovative devices for dark fibre networksWhat is done • 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 4th CEF Workshop Praha, Czech Republic

5. Innovative devices for dark fibre networksNew equipment • 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 4th CEF Workshop Praha, Czech Republic

6. Innovative devices for dark fibre networksNew equipment – tuneable FBGs • 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 4th CEF Workshop Praha, Czech Republic

7. Innovative devices for dark fibre networksNew equipment – Gires-Tournois etalons • Not so known as FBGs or DCFs • Very low insertion loss • Commercial availability limited • Important for higher speeds and lightpaths 4th CEF Workshop Praha, Czech Republic

8. Innovative devices for dark fibre networksNew equipment – Optical crossconnect • 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 design • Web 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 4th CEF Workshop Praha, Czech Republic

9. Innovative devices for dark fibre networksNew equipment – Optical crossconnect 4th CEF Workshop Praha, Czech Republic

10. Innovative devices for dark fibre networksNew equipment – Optical multicast • 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 to1:4 • Again, the basic idea from the CLA design • Web based management • User accounts with different privileges (configure/check) • AAA if needed, LDAP • Time scheduler for sharing of expensive resources 4th CEF Workshop Praha, Czech Republic

11. Innovative devices for dark fibre networksNew equipment – Optical multicast 4th CEF Workshop Praha, Czech Republic

12. Innovative devices for dark fibre networksNew equipment – Optical multicast 4th CEF Workshop Praha, Czech Republic

13. Innovative devices for dark fibre networksNew equipment – Conversions/Regenerations • Based on SOAs • Can be done with HNLF but high optical powers necessary • 10 Gb/s, tested up to 40 Gb/s RZ signals • Tested in our lab, more difficult to make a ‚black box‘ ready for deployment (polarization sensitive, more control elements) 4th CEF Workshop Praha, Czech Republic

14. Innovative devices for dark fibre networksConclusions I. • 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 Conclusions 4th CEF Workshop Praha, Czech Republic

15. Innovative devices for dark fibre networksConclusions II. • 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 4th CEF Workshop Praha, Czech Republic

16. Innovative devices for dark fibre networksReferences • [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. 4th CEF Workshop Praha, Czech Republic

17. Innovative devices for dark fibre networksAcknowledgements • Lada Altmanová, Jan Gruntorád, Martin Míchal, Václav Novák, Stanislav Šíma • And our new colleagues Jan Nejman and Miloslav Hůla for all SW related work 4th CEF Workshop Praha, Czech Republic

18. Innovative devices for dark fibre networks Q &A Thank you for your attention! 4th CEF Workshop Praha, Czech Republic

19. Innovative devices for dark fibre networks 4th CEF Workshop Praha, Czech Republic