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IIR’s WDM & Next-Generation Optical Networking conference
Nice 23 – 25 june 2009Asbjørn Klomstad, Telenor Operations Norway/IO
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Hovedpunkt
• Nye tjenester gir økt kapasitetsbehov• Status 40G og 100G• Neste Generasjon Optisk Nett
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WDM & Next Generation Optical Networking!
Acropolis Konferansesenter, NiceMed ca. 400 delegater registrertTidligere avholdt i Cannes.
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100G Field Trials
Comcast with Nortel OME 6500 for• 1 lambda at 100G, 50GHz, 335 km
(same network as 10G/40G) – live traffic• Verizon has done 3 trials, with
3 vendorsALU LambdaXtreme FioS video trial over live network, 273 milesNSN 111G over 1040kmNortel 92G over 73km with signal processing and correction• Deutsch Telekom with ALU 8x100G over 500km• SURFnet two 40G and one 100G wavelenghts over 1244km with
NortelEricsson with Deutsche Telekom• (1 lambda, 50GHz, 112G over 633km, 4 ROADMs inline on MHL 3K)
using DP-QPSK w/direct detection
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WDM NICE ROUGH TRAVEL GUIDE: AT THE 100G CAFE
04/07/2009So here we are at the must-attend 100G showcase, with no fewer than 7 vendors jostling for position on the stage in front of a baying crowd*. The only qualification? To have a published field trial with an operator. However, one does not! I leave as an exercise for the alert reader to discover which! I'll try to encapsulate each trial/vendor in a few highlights, which will doubtless cause trouble for omitting some important aspect - there's no substitute for being here! As the 100G alphabet soup is cooked, I suspect the session will run late. Alcatel-Lucent. 1st 100G trial with Verizon 16/11/07. 500km Tampa-Miami. DQPSK-NRZ/RZ modulation also with 10G channels. Has published 13 R&D papers since 2005. Conclusion: 100G PDM-QPSK (25 Gbaud) with coherent detection and digital post-processing, also compatible with 10G NRZ and 40G. Ciena. 100G trial with Caltech over 1500km. Agrees with Alcatel-Lucent on system technology - ADC plus DSP ASICs also Photonic Integration. 30-50% p.a. traffic growth means capacity exhaust, even 40G is insufficient in 2012. There will be much secret sauce from different vendors.Cisco. 1st 100GbE 802.3ba-based router demo with Comcast 6/08. Key requirement is compatibility with 10G links @ 50GHz. Conclusion: PM-QPSK modulation (25Gbaud). Sees 100G in routers for IPoWDM architectures, but also transponders. Vision shows 200G, 400G, 1T, CO-OFDM, software-defined optics.Ericsson. 112G trial with DTAG over 633km including 4x ROADM. PM-RZ-DQPSK modulation with fast LiNbO3 polarization tracking plus 10G and 40G neighbouring channels. Conclusion: PM RZ-DQPSK @ 50GHz needing no ADCs or DSP since polarization tracker is used for PMD tolerance. Investigating OFDM, SCM, nQAM.
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WDM NICE ROUGH TRAVEL GUIDE: AT THE 100G CAFE
Huawei. Several options available. OPFDM-DQPSK or OPDM-DQPSK - no ADC/DSP is needed so cost-effective. ePDM-DQPSK provides best performance, >1,000km but is more complex. Market timing is critical, as is ASIC complexity and availability. Sees a 5 year delay between 40G and 100G deployments.Nokia Siemens. 107G trial with AT&T in 2006, 2x 80km direct optical. 1st CP-QPSK in 2007. 111G trial with Verizon in 2008, 1040km and mixed 100G, 10G and 40G channels. Believes that coherent CP-DQPSK is the way forward, hero experiments are now finished, and need to make real commercial products.Nortel. 100G trial with Comcast 3/08, 335km link including ROADM. Many network demos 2008-09, including Verizon 73km link that could not carry standard 10G. Conclusion: coherent FDM-DP-QPSK (14Gbaud) @ 50GHz. Vision that coherent plus WDM gives next big jump in fibre capacity.I have the feeling of an industry - at least most of the vendor side - in a hurry, pushed by an invidious mix of public demand from a few high-profile carriers, the prospect of competitive IEEE interfaces, intense vendor competition plus a driving technological rivalry to scale the 100G mountain.I remain most concerned about gaining sufficient economy of scale, but despite appearances, the industry is largely converged on DP-QPSK with coherent detection. And whilst vendors may be reluctant to highlight it, the OIF's MSA functional standardisation is a critical first step towards economy.
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Orange UK:
Infrastructure fixed - mobile convergence is a realityThe optical layer offers a very cost effective solution for such infrastructure FMCStudy network traffic flows before selecting future network architecture and/or implementing capacity upgradesThe combination of Ethernet optimised PE routers, high speed core P routers and optimised optical infrastructure ensure the tools are available for cost-optimised core transport network evolution
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