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Photonics-oriented data transmission network for the KM3NeT prototype detector

Photonics-oriented data transmission network for the KM3NeT prototype detector. Jelle Hogenbirk , Nikhef )* On behalf of the KM3NeT consortium.

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Photonics-oriented data transmission network for the KM3NeT prototype detector

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  1. Photonics-oriented data transmission network for the KM3NeT prototype detector JelleHogenbirk, Nikhef )* On behalf of the KM3NeT consortium • )* Nikhef Electronics departement: Mar van der Hoek, Sander Mos, Jan Willem Schmelling, Jelle Hogenbirk, Gerard Kieft, Henk Peek, Peter Janswijer, Paul Timmer, Albert Zwart, DeepakGajanana, Ad Berkien, Jan Koopstra., Eric Heine VLVnT workshop Erlangen 11-10-2011 Jelle Hogenbirk et.al.

  2. Presentation Lay-out • Description of the prototype KM3NeT detection unit • Network block diagram of the optical network • Optical Test bench • Results • Next steps VLVnT workshop Erlangen 11-10-2011 Jelle Hogenbirk et.al.

  3. Configuration prototype KM3NeT detection unit • Detection unit with 20 storeys • Two storeys equipped with Digital Optical Modules (DOMs) •  In total 4 DOMs connected to shore The prototype optical network will provide unique point-to-point optical connections between the shore and each DOM VLVnT workshop Erlangen 11-10-2011 Jelle Hogenbirk et.al.

  4. wavelength i=1 i=M wavelength i=1 i=M Optical Network data flow Sub Sea Shore Station CW laser array Clock/ Data gen. Clock/data detect Optical Amp. Optical Power Splitting Downstream/Upstream split Wavelength Demux λ1 λM 1 i=1 1 clock/data modulation i=M N Pout,i = A(λi) Pin (λi) Pout = Pin /N 1 →i: Wavelength #i Drop i → 1: Wavelength #i Add Reflective modulator wavelength time Wavelength mux P(t) per λ wavelength Serialised PMT data POPT Optical module # i λ1 data detect Wavelength Demux 1 time Optical module # M P(t) per λ λM data detect 1 →i: Wavelength #i Drop (no timing circuitry) VLVnT workshop Erlangen 11-10-2011 Jelle Hogenbirk et.al.

  5. Optical Test Bench Laser Optical network for KM3Net PPM structure PM-DWDM Oclaro - PT10XGC 8λ(CW+AC @1.25Gbps) 50/50 coupler AC/DC ratio monitor (optional) PMDWDMM-D-8-1-30-1-L-H-F EDFA 8 x λ1 PIN A1 MOD DC+AC Modified - EAM-R-10-C-7S-FCA LiNbO3 D1 1% TAP PIN DOM #2 2xCu Oclaro - TL5000VCJ λ8 OFM 1 DOM #1 VOA Driver FDK – YS-500-155 λ1 Timing Calib. on/off ?? ?? DOM #3 Junction Box λ8 λ8 Foci - E-PR-4IVAPATBNXX100-4A-0 C1 Foci - M-DT-1-I-L-H-R-10-AP/AP-1 DOM #4 8 x Raman pump laser λ1 PIN D2 OFM 2 A2 λ4 C3 D3 C2 DWDM modules 16 channels, 100 GHz spacing, only 8 channels are used EDFA λ8 Foci - M-DT-1-I-L-H-R-10-AP/AP-1 2xCu λ7 DU-base control λ8 Ethernet control REAM Internal Power Supply always on Mirror 100 km DOMs Shore Station DU-base Enabling Signal Propagation Time Measurements VLVnT workshop Erlangen 11-10-2011 Jelle Hogenbirk et.al.

  6. Signal Propagation Time Measurement Assumefibrelength: ℓ d1 < ℓ d3 C-band d1 CW x A d4 1310? PIN FPGA R-EAM d2 d3 C B C-band reply Total time Tp1=d1+d2+d4+d2+d3 d1 A d4 PIN FPGA R-EAM d2 d3 C-band C B CW x 1310? C-band reply d1 d2 Total time Tp2=d3+d2+d4+d2+d3 n2 VOA t= dN/dλ ℓ = length C = speed of light N = numerical aperture T = time Equally Tuned circuitries T=(ℓn)/C n1 d3 dT= (ℓ(dN/dλ)Δλ))/C λ2 λ1 Erlangen 11-10-2011 Jelle Hogenbirk et.al.

  7. Signal Propagation Time measurement step 1 Laser Optical network for KM3Net PPM structure PM-DWDM Oclaro - PT10XGC 8λ(CW+AC @1.25Gbps) AC/DC ratio monitor (optional) 50/50 coupler PMDWDMM-D-8-1-30-1-L-H-F EDFA 8 x λ1 PIN A1 MOD Modified - EAM-R-10-C-7S-FCA R-EAM LiNbO3 D1 1% TAP PIN DOM #2 2xCu Oclaro - TL5000VCJ λ8 OFM 1 DOM #1 VOA Driver t0 FDK – YS-500-155 wavelength λ1 Timing Calib. on/off ?? DOM #3 Junction Box λ8 λ8 Foci - E-PR-4IVAPATBNXX100-4A-0 C1 Foci - M-DT-1-I-L-H-R-10-AP/AP-1 DOM #4 8 x Raman pump laser λ1 PIN D2 OFM 2 A2 λ4 C3 D3 C2 DWDM modules 16 channels, 100 GHz spacing, only 8 channels are used EDFA ta λ8 Foci - M-DT-1-I-L-H-R-10-AP/AP-1 2xCu λ7 DU-base control λ8 Ethernet control Internal Power Supply always on Mirror reflected 100 km DU-base Shore Station Timing loop is activated via optical switch (shore) and via an e.g. 80 kHz modulated λ8, which activates the VOA (or switch power switch for PPM only) (sub-sea). Amplification of A1 needs to be the same as A2. t0 ta Δt⇉signal path length Erlangen 11-10-2011 Jelle Hogenbirk et.al.

  8. Signal Propagation Time measurement step 2 Laser Optical network for KM3Net PPM structure PM-DWDM Oclaro - PT10XGC 8λ(CW+AC @1.25Gbps) AC/DC ratio monitor (optional) 50/50 coupler PMDWDMM-D-8-1-30-1-L-H-F EDFA 8 x λ1 PIN A1 MOD Modified - EAM-R-10-C-7S-FCA R-EAM LiNbO3 D1 1% TAP PIN DOM #2 2xCu Oclaro - TL5000VCJ λ8 OFM 1 DOM #1 VOA Driver t0 FDK – YS-500-155 λ1 Timing Calib. on/off ?? ?? DOM #3 Junction Box λ8 λ8 Foci - E-PR-4IVAPATBNXX100-4A-0 C1 Foci - M-DT-1-I-L-H-R-10-AP/AP-1 DOM #4 8 x Raman pump laser λ1 PIN D2 OFM 2 A2 λ4 C3 D3 C2 DWDM modules 16 channels, 100 GHz spacing, only 8 channels are used EDFA ta λ8 Foci - M-DT-1-I-L-H-R-10-AP/AP-1 2xCu λ7 DU-base control λ8 Ethernet control reflected Internal Power Supply always on Mirror 100 km DU-base Shore Station Timing loop is activated via optical switch (shore) and via an e.g. 80 kHz modulated λ8, which activates the VOA (or switch power switch for PPM only) (sub-sea). Amplification of A1 needs to be the same as A2. t0 ta Δt⇉signal path length VLVnT workshop Erlangen 11-10-2011 Jelle Hogenbirk et.al.

  9. Switch for Propagation Timing LEDs for test bench Optical fibre PIN Lim.Amp Tone Decoder 80 kHz VOA Driver VOA PIN VOA Driver FDK – YS-500-155 Tone Decoder 100 kHz 600V 0.05ΩMosfet switch circuit. With over current protection λ8 Tone Decoder 130 kHz Optional e.g. electrical power switch for DU Variable Optical Attenuator The optical AM modulated signal on λ8 is converted by the PIN diode to an electrical signal and directed to the limiting amplifier. When the frequency of the original signal matches the adjusted tone decoder frequency the VOA (used as a switch) is activated or deactivated. Extra option: After power up the solid state switch is “on” after a minimum of 350 V. The switch is controlled by the 100kHz and 130 kHz tone decoders. A power switch with over current protection is included. VLVnT workshop Erlangen 11-10-2011 Jelle Hogenbirk et.al.

  10. Determination of the Optical signal levels Laser Optical network for KM3Net PPM structure PM-DWDM Oclaro - PT10XGC 8λ(CW+AC @1.25Gbps) AC/DC ratio monitor (optional) 50/50 coupler PMDWDMM-D-8-1-30-1-L-H-F EDFA 8 x λ1 PIN 1 A1 MOD DC+AC Modified - EAM-R-10-C-7S-FCA LiNbO3 D1 1% TAP PIN DOM #2 2xCu 2 Oclaro - TL5000VCJ λ8 OFM 1 DOM #1 VOA Driver FDK – YS-500-155 λ1 Timing Calib. on/off ?? ?? DOM #3 Junction Box λ8 λ8 Foci - E-PR-4IVAPATBNXX100-4A-0 C1 Foci - M-DT-1-I-L-H-R-10-AP/AP-1 DOM #4 8 x Raman pump laser λ1 PIN D2 OFM 2 A2 λ4 C3 D3 C2 3 DWDM modules 16 channels, 100 GHz spacing, only 8 channels are used EDFA λ8 Foci - M-DT-1-I-L-H-R-10-AP/AP-1 2xCu λ7 DU-base control λ8 Ethernet control REAM Internal Power Supply always on Mirror 100 km DU-base Shore Station Sequence measurements for optical signal level determination VLVnT workshop Erlangen 11-10-2011 Jelle Hogenbirk et.al.

  11. Attended Spread Sheet Overlay for designcontrol Passive components CW Laser channel Conclusions with error detect support ( e.g. min/max values) amplifier Pin_TIA Approach and Formula depiction DATA to main sheet 1 Main sheet Functional blocs VLVnT workshop Erlangen 11-10-2011 Jelle Hogenbirk et.al.

  12. Test Bench @ Nikhef CW laser bank Amplifiers Optical Receiver Signal pattern generator BER tester 100 km fibre Shore station Subsea Station (DOM) Joint forces with the engineers of LNS-INFN Catania VLVnT workshop Erlangen 11-10-2011 Jelle Hogenbirk et.al.

  13. Results • The basic optical test bench setup compliant to a bidirectional data communication • has been realized for 1 optical channel with an extinction ratio of 5% at the receiver. • (Over a span of 100 km using optical amplifiers and the receiver is a PIN diode) • The engineers from IRFU (Saclay) tested their standard 1000BASE-X ETHERNETsystem • over a bidirectional span of 100 km over this test bench successfully. (however with a higher E.R.) • Test bench is ready for “Synchronous command insertion and extraction” that • can be implemented for accurate signal propagation time measurements • The Raman Amplifier, EDFA and optical fibre, supplied by INFN Catania are successfully tested over a span of 100km. Some amplifier parameters are still to be optimized. VLVnT workshop Erlangen 11-10-2011 Jelle Hogenbirk et.al.

  14. OpticalCommunicationSetup -7dBm Bookham PT10XGC PIN/TIA & MAX3945EVKIT 50km 50km Spark ch17 CW ON G Spark ch18 CW OFF λxx Tunable lsr ch19 λ OFF Los @ 18.2mV Squelch = ON Rate = 1G/4G mode Rx bandwidth = 1GHz R.E.A.M Ch 19 R.E.A.M. Vhi=-200mV Vlo=-1200mV ER==1,2 Tx Rx Agilent BER test setup. 1.25Gbps, 27-1 VLVnT workshop Erlangen 11-10-2011 Jelle Hogenbirk et.al.

  15. Component Inventoryfor prototype opticalnetwork VLVnT workshop Erlangen 11-10-2011 Jelle Hogenbirk et.al.

  16. Next steps • Test bench to be extended with the 8 channel laser bank and • Tests of the individual optical channels. E.g. influences of crosstalk etc. • Implementation and tests of the Timing Switch. • The configuration control in the system and repeating the • “Synchronous command insertion and extraction” • When the functionality of the system is proven system reliability to be reviewed. VLVnT workshop Erlangen 11-10-2011 Jelle Hogenbirk et.al.

  17. To be continued Thoughts Steve Jobs saying: I skate to where the puck goes I don’t stay where the puck is VLVnT workshop Erlangen 11-10-2011 Jelle Hogenbirk et.al.

  18. DAQ optical network for KM3NeT • Subsea compatible (subsea reliable design = position of active and passive components, single point failures etc.) RAMS criteria (additional ongoing benefits of this system: among DWDM colorless connections of DU’s • Top Overlay bidi data communication circuitry (system modules in scientific notation) • Work document schematics + timing circuitry (the golden circuitry) • Showcase Test Data and tested components • Inventory of components at Nikhef (laser bank), ordered, to determinate (contacts with industries) • Next steps, planning Electronic and photonics, Mar van der Hoek, Sander Mos, Jan Willem Schmelling, Jelle Hogenbirk, Gerard Kieft, Henk Peek, Peter Janswijer, Paul Timmer, Albert Zwart Mechanics, Gertjan Mul, Auke Korporaal, Edward Berbee, Hans Kok, Rene de Boer, Herman Boer Rookhuizen Coordination, Eric Heine VLVnT workshop Erlangen 11-10-2011 Jelle Hogenbirk et.al.

  19. RAMS Evaluation of the RAMS criteria applied to the KM3NeT network RELIABILITY AVAILABILITY SAFETY MAINTAINABILITY • During construction: • Laser safety • High voltage safety • Optical sphere aspects • During deployment: • t.b.d (WP 5) • During operation • Environmental impact • During design: • Perform fault tree analyses • Perform MTBF calculations • Single point failures • During construction: • Stringent QA program • Test systems • During deployment • Monitoring assistance • e.g. deploying the MEOC • During operation: • Monitoring • During construction: • Purchase of components • Availability of components • Second source suppliers • During deployment: • Monitoring assisted deployment • During operation: • Observation time versus Calibration time • Response time to failures • Time to Repair • Spare parts • Reduce the number of sub-sea components • Modularity of design • Implementation of monitoring functions First attempt . . . These RAMS criteria are also applied to the related mechanics! VLVnT workshop Erlangen 11-10-2011 Jelle Hogenbirk et.al.

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