1. NEMO Fase1 OPTICAL DATA TRANSPORT F. Ameli, M. Bonori, I.N.F.N. Sez. Roma1. VLVυT - Amsterdam 5-8 October 20031 Architecture Working Group NEMO Phase 1 data transmission: considerations toward km3

2. NEMO Fase1 OPTICAL DATA TRANSPORT F. Ameli, M. Bonori, I.N.F.N. Sez. Roma1. VLVυT - Amsterdam 5-8 October 20032 NEMO KM3 EXPERIMENT LAYOUT Main electro optical cable Primary JB Secondary JB Tower 200 m 1400 m

3. NEMO Fase1 OPTICAL DATA TRANSPORT F. Ameli, M. Bonori, I.N.F.N. Sez. Roma1. VLVυT - Amsterdam 5-8 October 20033 TOWER BLOCK DIAGRAM Secondary Junction-Box Tower Junction-Box (Optical Interleaver) FCM (Floor Control Module) Benthosphere DAQ 19.44 Mbps STM-1 (155 Mbps) Data On Fiber 2.5 Gbps

4. NEMO Fase1 OPTICAL DATA TRANSPORT F. Ameli, M. Bonori, I.N.F.N. Sez. Roma1. VLVυT - Amsterdam 5-8 October 20034 FCM # 1 FCM # 16 TJB # 1 SJB # 1 1 X 155 Mbit/s FCM # 1 FCM # 16 TJB # 2 SJB # 2 1 X 155 Mbit/s PJB 4 X 2.5 Gbit/s + 2 spare Fibers TO LANDSIDE OPTICAL DATA TRANSPORT TOPOLOGY (SEASIDE) 2 X 2.5 Gbit/s

5. NEMO Fase1 OPTICAL DATA TRANSPORT F. Ameli, M. Bonori, I.N.F.N. Sez. Roma1. VLVυT - Amsterdam 5-8 October 20035 OPTICAL DATA TRANSPORT TOPOLOGY (LANDSIDE) MAIN OPTICAL BOX 155 Mbit/s from FCM # 1 155 Mbit/s from FCM # 16 FROM TJB # 1 155 Mbit/s from FCM # 1 155 Mbit/s from FCM # 16 FROM TJB # 2 4 X 2.5 Gbit/s + 2 spare Fibers FROM SEASIDE TWO AUXILIARY CHANNELS

6. NEMO Fase1 OPTICAL DATA TRANSPORT F. Ameli, M. Bonori, I.N.F.N. Sez. Roma1. VLVυT - Amsterdam 5-8 October 20036 FLOOR DATA TRANSPORT DWDM OPTICAL TRANSCEIVER To Tower JB 2/1 DWDM MUX

7. NEMO Fase1 OPTICAL DATA TRANSPORT F. Ameli, M. Bonori, I.N.F.N. Sez. Roma1. VLVυT - Amsterdam 5-8 October 20037 TJB DATA TRANSPORT FLOOR # 16 16/1 DWDM MUX FLOOR # 1 1/16 DWDM MUX 1/2 DWDM MUX 1/2 DWDM MUX 200/100 GHz INTER LEAVER POWER SPLITTER TJB X 16

8. NEMO Fase1 OPTICAL DATA TRANSPORT F. Ameli, M. Bonori, I.N.F.N. Sez. Roma1. VLVυT - Amsterdam 5-8 October 20038 SJB DATA TRANSPORT SJB

9. NEMO Fase1 OPTICAL DATA TRANSPORT F. Ameli, M. Bonori, I.N.F.N. Sez. Roma1. VLVυT - Amsterdam 5-8 October 20039 PJB DATA TRANSPORT 1300 1500 MUX 1300 1500 MUX 1300 1500 MUX 1300 1500 MUX Spare # 1 Spare # 2 Aux # 1 Aux # 2 Tower # 1 Main Tower # 1 Protection Tower # 2 Main Tower # 2 Protection Tower # 1 Main Tower # 1 Protection Tower # 2 Main Tower # 2 Protection To/From SJB To/From Land Side

10. NEMO Fase1 OPTICAL DATA TRANSPORT F. Ameli, M. Bonori, I.N.F.N. Sez. Roma1. VLVυT - Amsterdam 5-8 October 200310 MOB DATA TRANSPORT 1300 1500 MUX 1300 1500 MUX 1300 1500 MUX 1300 1500 MUX Aux # 1 Aux # 2 SW 1 SW 2 100/200 INTER LVR 100/200 INTER LVR 1/16 DWDM MUX 1/16 DWDM MUX 1/16 DWDM MUX 1/16 DWDM MUX Tower # 1 Floor # 1 Floor # 16 Tower # 1 Floor # 1 Floor # 16 EO CABLE

11. NEMO Fase1 OPTICAL DATA TRANSPORT F. Ameli, M. Bonori, I.N.F.N. Sez. Roma1. VLVυT - Amsterdam 5-8 October 200311 LABORATORY DATA TRANSPORT DWDM OPTICAL TRANSCEIVER TO/FROM MOB

12. NEMO Fase1 OPTICAL DATA TRANSPORT F. Ameli, M. Bonori, I.N.F.N. Sez. Roma1. VLVυT - Amsterdam 5-8 October 200312 POWER LOSS BUDGET 2:1 DWDM MUX (FCM) 2 dB 1:2 DWDM MUX (TJB) 2 dB 16:1 DWDM MUX (TJB) 2 dB 200:100 GHz INTERLEAVER (TJB) 3 dB 1:2 POWER DIVIDER (TJB) 3 dB 1.3 nm:1.5 nm CWDM MUX (PJB) 2 dB ELECTRO OPTICAL CABLE (~ 30 km) 9 dB 1.3 nm:1.5 nm CWDM MUX (MOB) 2 dB 100:200 GHz INTERLEAVER (MOB) 3 dB 1:16 DWDM MUX (MOB) 2 dB TOTAL POWER LOSS 30 dB

13. NEMO Fase1 OPTICAL DATA TRANSPORT F. Ameli, M. Bonori, I.N.F.N. Sez. Roma1. VLVυT - Amsterdam 5-8 October 200313 AGILENT DWDM TRANSCEIVER

14. NEMO Fase1 OPTICAL DATA TRANSPORT F. Ameli, M. Bonori, I.N.F.N. Sez. Roma1. VLVυT - Amsterdam 5-8 October 200314 SYSTEM BENEFITS NETWORK TOTALLY PASSIVE (but for the Transceivers) PROVIDES AN AUXILIARY CHANNEL FOR TOWER LEAVES TWO FIBERS FREE FOR FUTURE NEEDS USES ONLY ONE FIBER FROM EACH FLOOR TO TJB ACHIEVES 100 % FIBER REDUNDANCY FROM TJB TO MOB ALL REDUNDANCY SWITCHES ARE ONSHORE USES ONLY COMMERCIALLY AVAILABLE COMPONENTS LOW COST