photonics-oriented data transmission network for the km3net prototype detector
DESCRIPTION
Photonics-oriented data transmission network for the KM3NeT prototype detector. Jelle Hogenbirk , Nikhef )* On behalf of the KM3NeT consortium. - PowerPoint PPT PresentationTRANSCRIPT
electronic department
Photonics-oriented data transmission network for the KM3NeT prototype detector
Jelle Hogenbirk, Nikhef )*On behalf of the KM3NeT consortium
1VLVnT workshop Erlangen 11-10-2011 Jelle Hogenbirk et.al.
)* Nikhef Electronics departement: Mar van der Hoek, Sander Mos, Jan Willem Schmelling, Jelle Hogenbirk, Gerard Kieft, Henk Peek, Peter Janswijer, Paul Timmer, Albert Zwart, Deepak Gajanana, Ad Berkien, Jan Koopstra., Eric Heine
electronic department
Presentation Lay-out
2VLVnT workshop Erlangen 11-10-2011 Jelle Hogenbirk et.al.
• Description of the prototype KM3NeT detection unit
• Network block diagram of the optical network
• Optical Test bench
• Results
• Next steps
electronic department
Configuration prototype KM3NeT detection unit
3VLVnT workshop Erlangen 11-10-2011 Jelle Hogenbirk et.al.
• 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
electronic department
Optical Network data flow
4VLVnT workshop Erlangen 11-10-2011 Jelle Hogenbirk et.al.
CW laser array
clock/data modulation
Optical Amp.
Clock/data detect
Wavelength Demux
Reflective modulator
Serialised PMT data
λ1 data detect
Pout,i = A(λi) Pin (λi)
Optical Power Splitting
1
N
Pout = Pin /N 1 →i: Wavelength #i
Drop
i → 1: Wavelength #i
Add
1
Downstream/Upstream split
Clock/ Data gen.
1 →i: Wavelength #i
Drop
Sub SeaShore Station
timewavelength
1
Wavelength Demux
i=1
i=M
i=1
i=MλM data
detect
λ1 λM
i=1
i=M
wavelength wavelength wavelength
P(t) per λ
time
POPT Optical module
# i
Optical module
# M
Wavelength mux
(no timing circuitry)
P(t) per λ
electronic department
Optical Test Bench
5VLVnT workshop Erlangen 11-10-2011 Jelle Hogenbirk et.al.
λ1
λ7
100 km
DOM #2
Shore Station
MOD
λ8
λ1
REAM
8λ ([email protected])
2xCu
2xCuDC+AC
1% TAP
Timing Calib.on/off
50/50 coupler
AC/DC ratio monitor (optional)
DWDM modules 16 channels, 100 GHz spacing, only 8 channels are used
EDFA
DOM #1
DU-base
OFM 2
DOM #3
DOM #4
EDFA
??
PIN
Laser
λ8
λ1??
λ4
λ8
DU-base control
A2
PIN
PIN
VOA
8 x
8 x
A1
Driver
Internal Power Supply always on
Oclaro - PT10XGC
Modified - EAM-R-10-C-7S-FCA
Oclaro -TL5000VCJ
λ8
Mirror
C1
C3 C2
OFM 1
FDK
– Y
S-50
0-15
5
LiNbO3
Junc
tion
Box
D2
D3
Optical network for KM3Net PPM structure
Foci - M-DT-1-I-L-H-R-10-AP/AP-1
Foci
- M
-DT-
1-I-L
-H-R
-10-
AP/
AP-
1
Foci
- E-
PR-4
IVA
PATB
NXX
100-
4A-0
PM-DWDM
Ethernet control
Raman pump laser
λ8
D1
PMDWDMM-D-8-1-30-1-L-H-F
DOMs
Enabling Signal Propagation Time Measurements
electronic departmentErlangen 11-10-2011 Jelle Hogenbirk et.al. 6
d1
d3d2
d4
B C
d1
d3d2
d4
B C
A
A
Total time Tp1=d1+d2+d4+d2+d3
Total time Tp2=d3+d2+d4+d2+d3
CW x
t= dN/dλT=(ℓn)/CdT= (ℓ(dN/dλ)Δλ))/C
λ1
n1
n2
λ2
ℓ = lengthC = speed of lightN = numerical apertureT = time
1310?
1310? C-bandreply
C-bandreply
d1 d2
d3
VOA
C-band
PINFPGAR-EAM
PINFPGAR-EAM
Signal Propagation Time Measurement
CW xC-band
Assume fibre length: ℓ d1 < ℓ d3
Equally Tuned circuitries
electronic departmentErlangen 11-10-2011 Jelle Hogenbirk et.al. 7
λ1
λ7
100 km
DOM #2
Shore Station
MOD
λ8
λ1
8λ ([email protected])
2xCu
2xCu1% TAP
Timing Calib.on/off
50/50 coupler
AC/DC ratio monitor (optional)
DWDM modules 16 channels, 100 GHz spacing, only 8 channels are used
EDFA
DOM #1
DU-base
OFM 2
DOM #3
DOM #4
EDFA
PIN
Laser
λ8
λ1??
λ4
λ8
DU-base control
A2
PIN
PIN
VOA
8 x
8 x
A1
Driver
Internal Power Supply always on
Oclaro - PT10XGC
Modified - EAM-R-10-C-7S-FCA
Oclaro -TL5000VCJ
λ8
Mirror
C1
C3 C2
OFM 1
FDK
– Y
S-50
0-15
5
LiNbO3
Junc
tion
Box
D2
D3
Optical network for KM3Net PPM structure
Foci - M-DT-1-I-L-H-R-10-AP/AP-1
Foci
- M
-DT-
1-I-L
-H-R
-10-
AP/
AP-
1
Foci
- E-
PR-4
IVA
PATB
NXX
100-
4A-0
PM-DWDM
Ethernet control
Raman pump laser
λ8
D1
PMDWDMM-D-8-1-30-1-L-H-F
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.
wavelength
R-EAM
t0
ta
ta
t0
reflected
Signal Propagation Time measurement step 1
Δt⇉ signal path length
electronic department
Signal Propagation Time measurement step 2
8VLVnT workshop Erlangen 11-10-2011 Jelle Hogenbirk et.al.
λ1
λ7
100 km
DOM #2
Shore Station
MOD
λ8
λ1
8λ ([email protected])
2xCu
2xCu1% TAP
Timing Calib.on/off
50/50 coupler
AC/DC ratio monitor (optional)
DWDM modules 16 channels, 100 GHz spacing, only 8 channels are used
EDFA
DOM #1
DU-base
OFM 2
DOM #3
DOM #4
EDFA
??
PIN
Laser
λ8
λ1??
λ4
λ8
DU-base control
A2
PIN
PIN
VOA
8 x
8 x
A1
Driver
Internal Power Supply always on
Oclaro - PT10XGC
Modified - EAM-R-10-C-7S-FCA
Oclaro -TL5000VCJ
λ8
Mirror
C1
C3 C2
OFM 1
FDK
– Y
S-50
0-15
5
LiNbO3
Junc
tion
Box
D2
D3
Optical network for KM3Net PPM structure
Foci - M-DT-1-I-L-H-R-10-AP/AP-1
Foci
- M
-DT-
1-I-L
-H-R
-10-
AP/
AP-
1
Foci
- E-
PR-4
IVA
PATB
NXX
100-
4A-0
PM-DWDM
Ethernet control
Raman pump laser
λ8
D1
PMDWDMM-D-8-1-30-1-L-H-F
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
ta
t0
reflectedR-EAM
Δt⇉ signal path length
electronic department
Switch for Propagation Timing
9VLVnT workshop Erlangen 11-10-2011 Jelle Hogenbirk et.al.
PIN Lim.Amp Tone Decoder 80 kHz
Tone Decoder 100 kHz
Tone Decoder 130 kHz
VOA Driver VOA
LEDs for test bench
600V 0.05Ω Mosfet switch circuit. With
over current protection
Optional e.g. electrical power switch for DU
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.
λ8 PIN
VOA Driver
FDK
– Y
S-50
0-15
5
Optical fibre
Variable Optical Attenuator
electronic department
Determination of the Optical signal levels
10VLVnT workshop Erlangen 11-10-2011 Jelle Hogenbirk et.al.
λ1
λ7
100 km
DOM #2
Shore Station
MOD
λ8
λ1
REAM
8λ ([email protected])
2xCu
2xCuDC+AC
1% TAP
Timing Calib.on/off
50/50 coupler
AC/DC ratio monitor (optional)
DWDM modules 16 channels, 100 GHz spacing, only 8 channels are used
EDFA
DOM #1
DU-base
OFM 2
DOM #3
DOM #4
EDFA
??
PIN
Laser
λ8
λ1??
λ4
λ8
DU-base control
A2
PIN
PIN
VOA
8 x
8 x
A1
Driver
Internal Power Supply always on
Oclaro - PT10XGC
Modified - EAM-R-10-C-7S-FCA
Oclaro -TL5000VCJ
λ8
Mirror
C1
C3 C2
OFM 1
FDK
– Y
S-50
0-15
5
LiNbO3
Junc
tion
Box
D2
D3
Optical network for KM3Net PPM structure
Foci - M-DT-1-I-L-H-R-10-AP/AP-1
Foci
- M
-DT-
1-I-L
-H-R
-10-
AP/
AP-
1
Foci
- E-
PR-4
IVA
PATB
NXX
100-
4A-0
PM-DWDM
Ethernet control
Raman pump laser
λ8
D1
PMDWDMM-D-8-1-30-1-L-H-F
1
3
2
Sequence measurements for optical signal level determination
electronic department
Attended Spread Sheet Overlay for design control
11VLVnT workshop Erlangen 11-10-2011 Jelle Hogenbirk et.al.
Functional blocsMain sheet
DATA to main sheet
Conclusions with
error detectsupport
( e.g. min/max values)
Pin_TIAamplifier
CW Laser channelPassive components
1
Approachand
Formula depiction
electronic department
Test Bench @ Nikhef
12VLVnT workshop Erlangen 11-10-2011 Jelle Hogenbirk et.al.
CW laser bankAmplifiers
100 km fibre
Shore station Subsea Station(DOM)
Joint forces with the engineers of LNS-INFN Catania
Optical Receiver
Signal pattern generator
BER tester
electronic department
Results
13VLVnT workshop Erlangen 11-10-2011 Jelle Hogenbirk et.al.
• 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 ETHERNET system 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.
electronic department
Optical Communication Setup
14VLVnT workshop Erlangen 11-10-2011 Jelle Hogenbirk et.al.
Bookham PT10XGC PIN/TIA &MAX3945EVKIT
Tx Agilent BER test setup. 1.25Gbps, 27-1
Rx
R.E.A.MCh 19
Spark ch17 CW ON
Spark ch18 CW OFF
Tunable lsr ch19 λ OFF
λxx
Los @ 18.2mVSquelch = ONRate = 1G/4G modeRx bandwidth = 1GHz
-7dBm
R.E.A.M.Vhi=-200mVVlo=-1200mVER==1,2
50km 50km
G
electronic department
Component Inventory for prototype optical network
15VLVnT workshop Erlangen 11-10-2011 Jelle Hogenbirk et.al.
For the PPM of KM3NeT sufficient optical parts available for at least 6 DOMs Present at Nikhef
8 Tunable Lasers Full C-Band with variable output power. Mounted in a case Yes
PM Patch cords Yes
Polarization Maintaining DWDM Yes
LiNbO3 modulator: currently only an old type available. New type in research/ordered Yes/ordered
Isolators Yes
Couplers Yes
Circulators Yes
DWDM: Subsea and shore station Ordered
VOA (Variable Optical Attenuator) Yes
R-EAMs Ordered/soon
PIN Diodes for DOM Yes
Add/Drop filter λ8 for timing circuit Yes
PCB: Timing Circuit with driver for VOA Yes
Optical Amplifiers to be ordered (industrial contacts are established) No
electronic department
Next steps
16VLVnT workshop Erlangen 11-10-2011 Jelle Hogenbirk et.al.
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.
electronic department17VLVnT workshop Erlangen 11-10-2011 Jelle Hogenbirk et.al.
To be continued
Steve Jobs saying:
I skate to where the puck goes
I don’t stay where the puck is
Thoughts
electronic department
DAQ optical network for KM3NeT
18VLVnT workshop Erlangen 11-10-2011 Jelle Hogenbirk et.al.
• 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 ZwartMechanics,Gertjan Mul, Auke Korporaal, Edward Berbee, Hans Kok, Rene de Boer, Herman Boer RookhuizenCoordination, Eric Heine
electronic department
RAMS
19VLVnT workshop Erlangen 11-10-2011 Jelle Hogenbirk et.al.
Evaluation of the RAMS criteria applied to the KM3NeT network
RELIABILITY AVAILABILITY MAINTAINABILITY SAFETYDuring 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
During construction:•Laser safety•High voltage safety•Optical sphere aspects
During deployment:•t.b.d (WP 5)
During operation•Environmental impact
These RAMS criteria are also applied to the related mechanics!
First
attempt .
. .