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Josef Vojtěch, Miroslav Karásek, Jan Radil

Field and lab experiences with deployment of optical amplifiers and FBGs. Josef Vojtěch, Miroslav Karásek, Jan Radil. www.ces . net. Field and lab experiences with optical amplifiers and FBGs Outline. Motivations Laboratory experiments Field Deployment (+ planned) Conclusions. Warning

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Josef Vojtěch, Miroslav Karásek, Jan Radil

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  1. Field and lab experiences with deployment of optical amplifiers and FBGs Josef Vojtěch, Miroslav Karásek, Jan Radil www.ces.net

  2. Field and lab experiences with optical amplifiers and FBGsOutline • Motivations • Laboratory experiments • Field Deployment (+ planned) • Conclusions Warning Presented ideas are of authors and do not necessarily reflect an official opinion of the CESNET or any other institution or project, and are opened to improvement. CEF Workshop Praha, Czech Republic

  3. Field and lab experiences with optical amplifiers and FBGsMotivations • Utilization of dark fibres – CEF networks (the first DF line lighted by CESNET 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 10 GE) • Single fibre bidirectional N x 10 GE transmission CEF Workshop Praha, Czech Republic

  4. Field and lab experiences with optical amplifiers and FBGsLaboratory Experiments I • 1GE NIL • 300 km G.652 (EDFAonly) • 325 km G.652 (EDFA + Raman) • 10GE NIL • 2x10G+2x1G WDM 202km G.652 (EDFA + DCF) • 2x10G WDM 250km G.652 (EDFA + Raman + DCF) • 10G DWDM 302 km G.655+652 (EDFA + Raman) CEF Workshop Praha, Czech Republic

  5. Field and lab experiences with optical amplifiers and FBGs2 x 10G + 2 x 1G NIL WDM 200km G.652 CEF Workshop Praha, Czech Republic

  6. Field and lab experiences with optical amplifiers and FBGs2 x 10G WDM NIL 250km G.652 CEF Workshop Praha, Czech Republic

  7. 227 km G.655 + 75 km G.652 10GE 1550,12 nm Tx Rx Rx Tx OF1 OF2 EDFA 1 EDFA 2 Raman pump Field and lab experiences with optical amplifiers and FBGs10G DWDM NIL 302km G.655+G.652 • Simulation of real line • No CD compensation at all due to NZDSF CEF Workshop Praha, Czech Republic

  8. Field and lab experiences with optical amplifiers and FBGsLaboratory Experiments II • 10GE NIL • 8x10G DWDM 250km G.652 (EDFA + FBGs) • 10GE NIL bidirectional (single fibre) transmission • 2x4x10G 210km G.652 (EDFA + FBGs) CEF Workshop Praha, Czech Republic

  9. Tx1 Tx8 Rx1 Rx8 250 km G.652 . . . . EDFA 1 EDFA 2 MUX FBG DEMUX Field and lab experiences with optical amplifiers and FBGs8 x 10G DWDM 250km G.652 Optical spectrum of multiplexed channels before amplification Input spectrum and „eye“ diagram at Rx 7 input CEF Workshop Praha, Czech Republic

  10. Rx1 Rx4 Tx1 Rx5 Tx4 Tx5 Tx8 Rx8 210 km G.652 EDFA 1 EDFA 2 λ1+λ2+λ3+λ4 λ5+λ6+λ7+λ8 λ5+λ6+λ7+λ8 λ1+λ2+λ3+λ4 MUX 1 EDFA 3 EDFA 4 MUX 2 FBG 1 FBG 2 λ5+λ6+λ7+λ8 λ1+λ2+λ3+λ4 DEMUX 1 DEMUX 2 Field and lab experiences with optical amplifiers and FBGs2 x 4 x 10G DWDM 210km G.652 CEF Workshop Praha, Czech Republic

  11. Field and lab experiences with optical amplifiers and FBGs2 x 4 x 10G DWDM 210km G.652 Optical power at the output of MUX 1 Optical power at the output of MUX 2 CEF Workshop Praha, Czech Republic

  12. Field and lab experiences with optical amplifiers and FBGs2 x 4 x 10G DWDM 210km G.652 Optical power at the output of EDFA3 Optical power at the output of MUX 2 CEF Workshop Praha, Czech Republic

  13. Field and lab experiences with optical amplifiers and FBGs2 x 4 x 10G DWDM 210km G.652 Eye diagram of the transmitter - DWDM XENPAK Eye diagram recorded at the input of Rx1 CEF Workshop Praha, Czech Republic

  14. Field and lab experiences with optical amplifiers and FBGsField deployment • 1GE NIL • 189 km G.652 Praha – Pardubice CESNET2 since May 2002 • 235 km G.652 Brno – Ostrava CESNET2 since June 2003 • 10GE • 1(8 ready) x 10G DWDM 298km G.655+652 Praha - Brno CzechLight (no CD comp.) since May 2005 • 1(4 ready) x 10G DWDM NIL 190 km G.652 CBF Brno-CESNET2 Bratislava-SANET (FBGs) since Feb 2006 CEF Workshop Praha, Czech Republic

  15. Field and lab experiences with optical amplifiers and FBGs4 x 10 GE DWDM CBF Brno - Bratislava CEF Workshop Praha, Czech Republic

  16. CESNET Brno 190 km 220 km SANET Bratislava ACONET Vienna 108 km Field and lab experiences with optical amplifiers and FBGsplanned up to 8 x 10 GE DWDM Brno – Vienna • CBF between Brno-CESNET2 and Vienna-ACONET (last side of triangle) • Approximate length over 220 km of G.652 fiber (attenuation about 65 dB) • Real challenge – NIL (Raman amplificationnecessary) Czech Rep. Slovakia Austria CEF Workshop Praha, Czech Republic

  17. Field and lab experiences with optical amplifiers and FBGsConclusions I • Thanks to persistent technology progress - lighting of dark fibers is getting easier and easier • If static DWDM multiplex at 10 G is enough – you need only: fibres, transceivers, (amplifiers) and passives • Note: Exact setup and component needs depend on parameters as transceivers, fibre types, attenuation, etc. CEF Workshop Praha, Czech Republic

  18. Field and lab experiences with optical amplifiers and FBGsConclusions I cont. CEF Workshop Praha, Czech Republic

  19. Field and lab experiences with optical amplifiers and FBGsConclusions I cont. CEF Workshop Praha, Czech Republic

  20. Field and lab experiences with optical amplifiers and FBGsConclusions II • Not only higher transmission speeds but reconfigurability and all-optical signal processing also becoming more important • Present generation of systems (ROADMs, WSSs, OXCs) • For next generation - deployment and development and of new components (wavelength and NRZ/RZ conversions, pure optical OOO regenerators) • Especially important (in our opinion) for academic and research community CEF Workshop Praha, Czech Republic

  21. Field and lab experiences with optical amplifiers and FBGsReferences • [1] Karásek, M. - Peterka, P. - Radil, J. , „202 km repeaterless transmission of 2 x 10 GE plus 2 x 1 GE channels over standard single mode fibre. “, In: Optics Communications 235, pp. 269-274., 2004. • [2] Karásek, M. - Peterka, P. - Radil, J. , „Repeaterless Transmission of 2 x 10 GE Channels over 252 km of Standard Single Mode Fibre without in-line EDFA “, In: IEEE J. on Selected Areas in Communications, sfp, 2004. • [3] Radil, J. - Karásek, M., „Experiments with 10 GE long-haul transmissions in academic and research networks.“, In: I2 member meeting, Arlington, VA, 2004. • [4] Altmanová L., Radil J., Šíma S., Vojtěch J., „CzechLight testbed“. In: GN2 APM meeting, Praha, Czech Republic, February 2005. CEF Workshop Praha, Czech Republic

  22. Field and lab experiences with optical amplifiers and FBGsAcknowledgement • Lada Altmanová, Jan Gruntorád, Martin Míchal, Václav Novák, Stanislav Šíma CEF Workshop Praha, Czech Republic

  23. Field and lab experiences with optical amplifiers and FBGsThank you for your attention!Q&A CEF Workshop Praha, Czech Republic

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