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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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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
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

field and lab experiences with optical amplifiers and fbgs motivations
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

field and lab experiences with optical amplifiers and fbgs laboratory experiments i
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

field and lab experiences with optical amplifiers and fbgs 2 x 10g 2 x 1g nil wdm 200km g 652
Field and lab experiences with optical amplifiers and FBGs2 x 10G + 2 x 1G NIL WDM 200km G.652

CEF Workshop

Praha, Czech Republic

field and lab experiences with optical amplifiers and fbgs 2 x 10g wdm nil 250km g 652
Field and lab experiences with optical amplifiers and FBGs2 x 10G WDM NIL 250km G.652

CEF Workshop

Praha, Czech Republic

field and lab experiences with optical amplifiers and fbgs 10g dwdm nil 302km g 655 g 652

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

field and lab experiences with optical amplifiers and fbgs laboratory experiments ii
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

field and lab experiences with optical amplifiers and fbgs 8 x 10g dwdm 250km g 652

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

field and lab experiences with optical amplifiers and fbgs 2 x 4 x 10g dwdm 210km g 652

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

field and lab experiences with optical amplifiers and fbgs 2 x 4 x 10g dwdm 210km g 6521
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

field and lab experiences with optical amplifiers and fbgs 2 x 4 x 10g dwdm 210km g 6522
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

field and lab experiences with optical amplifiers and fbgs 2 x 4 x 10g dwdm 210km g 6523
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

field and lab experiences with optical amplifiers and fbgs field deployment
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

field and lab experiences with optical amplifiers and fbgs 4 x 10 ge dwdm cbf brno bratislava
Field and lab experiences with optical amplifiers and FBGs4 x 10 GE DWDM CBF Brno - Bratislava

CEF Workshop

Praha, Czech Republic

field and lab experiences with optical amplifiers and fbgs planned up to 8 x 10 ge dwdm brno vienna

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

field and lab experiences with optical amplifiers and fbgs conclusions i
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

field and lab experiences with optical amplifiers and fbgs conclusions i cont
Field and lab experiences with optical amplifiers and FBGsConclusions I cont.

CEF Workshop

Praha, Czech Republic

field and lab experiences with optical amplifiers and fbgs conclusions i cont1
Field and lab experiences with optical amplifiers and FBGsConclusions I cont.

CEF Workshop

Praha, Czech Republic

field and lab experiences with optical amplifiers and fbgs conclusions ii
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

field and lab experiences with optical amplifiers and fbgs references
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

field and lab experiences with optical amplifiers and fbgs acknowledgement
Field and lab experiences with optical amplifiers and FBGsAcknowledgement
  • Lada Altmanová, Jan Gruntorád, Martin Míchal, Václav Novák, Stanislav Šíma

CEF Workshop

Praha, Czech Republic

field and lab experiences with optical amplifiers and fbgs thank you for your attention q a
Field and lab experiences with optical amplifiers and FBGsThank you for your attention!Q&A

CEF Workshop

Praha, Czech Republic