1. Coherent Alien Waves over a DCM-compensated DWDM network WHY – WHAT – HOW – WHEN … of … a study of performances and possible limitations of the coherent alien wavelengths transport on a DCM based optical network Gloria Vuagnin TNC15 | Porto, June 15 th 2015

2. Why to study Alien wavelengths TNC15 | Porto, June 15 th 2015Gloria Vuagnin #2 Older platform (2011) 1GE and 10GE clients 10Gb/s and 40Gb/s IM-DD* DCM**-based infrastructure Newer platform (2015) 10GE – 40GE - 100 GE clients 500Gb/s coherent SuperChannel DCM**-free infrastructure From South the Alien waves technology should invade the Central-North infrastructure to bring there the 100GE client opportunity Smooth migration (@ first: main nodes only, later amplifiers) * Intensity Modulation Direct Detection **Dispersion Compensation Module

3. Where: RM2-NA1: 300 km – 1 Raman, 4 ROADMs RM2 – BA1: 700 km – 2Ramans, 8 ROADMs Where and what we planned to test TNC15 | Porto, June 15 th 2015Gloria Vuagnin #3 What we plan to study: Over the DCM-based infrastructure Performance of the coherent optical super-channel @ 500Gb/s (10 carriers) in QPSK and BPSK modulation scenario BER –pre/post-FEC, OSNR, Q value, Optical power, reach Performance of the optical native 10Gb/s channels coexisting with coherent alien wavelenths of higher bit rate Trial runs

4. How the test will be done TNC15 | Porto, June 15 th 2015Gloria Vuagnin #4 5 native 10Gb/s optical channels single 500Gb/s superchannel (OCG: 5x100Gb/s dual carrier) made by 10 carriers, 50Gb/s@200 GHz spacing How many 100GE client s? How far? 25Ghz 50Ghz

5. How does the integration work? TNC15 | Porto, June 15 th 2015Gloria Vuagnin #5 Existing waves 3 rd Party Mux Infinera DTN-X Mix and Match 3 rd party and Infinera Waves Mix and Match 3 rd party and Infinera Waves OCG-8,1 : Ch. 40 OFM-40 : Passive 1RU Filter Booster amp / OCG – 3RU C8, OCG 8 OCG-8,8 : Ch. 12 OCG-8,9 : Ch. 8 OCG-8,10: Ch. 4 Ch. 6 Ch.11 Ch.38 Ch.39 Ch. 5 3 rd Party Amplifier chain OCG 1-16 Infinera : 191,725 – 195,925 THz Channel 1-80 Huawei : 196,05 – 192, 10 THz

6. First plan When TNC15 | Porto, June 15 th 2015Gloria Vuagnin #6 Apr 2015 Jul 2015 Jun 2015 Sep 2015 END 2015 Oct 2015 Executive doc ready Equipment order Delivery & Set-up Early results Final results

7. To study alien wavelengths on GARR infrastructure is extremely interesting and usefull. If Aliens are: Conclusions TNC15 | Porto, June 15 th 2015Gloria Vuagnin #7 nice and friendly (they come in peace!) Smooth migration between platforms And much more...plans, projects and tests to do entirely dangerous What a shame! however it is definitely worth to know it manageable but tricky mission: define strict operational procedures

8. Questions ? … Remember they are watching us… TNC15 | Porto, June 15 th 2015 Gloria Vuagnin #8

9. DWDM: Dense Wavelength Division Multiplexing DCM: Dispersion Compensation Module IM-DD: Intensity Modulation Direct Detection RAMAN pump: amplificator based on Raman effect ROADM: Reconfigurable Optical Add Drop Multiplexers BER: Bit Error Rate FEC: Forward Error Correction OSNR: Optical Signal Noise Ratio Q value: QPSK: Quadrature Phase Shift Keying BPSQ: Binary Phase Shift Keying OCG: Optical Carrier Group OFM: Optical Filter Module GMPLS: Generalized Multi-Protocol Label Switching acronyms Evento | Luogo, data >> “intestazione e pié di pagina” Nome Cognome >> “intestazione e pié di pagina” #9