Electronic department Photonics-oriented data transmission network for the KM3NeT prototype detector...

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


Presentation Lay-out


• Description of the prototype KM3NeT detection unit

• Network block diagram of the optical network

• Optical Test bench

• Results

• Next steps


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


Optical Network data flow


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


Optical Test Bench


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

FD

K –

YS

-500

-15

5

LiNbO3

Jun

ctio

n B

ox

D2

D3

Optical network for KM3Net PPM structure

Foci - M-DT-1-I-L-H-R-10-AP/AP-1

Fo

ci

- M

-DT-

1-I

-L-H

-R-1

0-A

P/A

P-

1

Fo

ci -

E-P

R-4

IVA

PA

TB

NX

X10

0-4A

-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)/C

dT= (ℓ(dN/dλ)Δλ))/Cλ1

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


2xCu

2xCu1% TAP

Timing Calib.on/off

50/50 coupler



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


Oclaro - PT10XGC


Oclaro -TL5000VCJ

λ8

Mirror

C1

C3 C2

OFM 1

FD

K –

YS

-500

-15

5

LiNbO3

Jun

ctio

n B

ox

D2

D3



Fo

ci

- M

-DT-

1-I

-L-H

-R-1

0-A

P/A

P-

1

Fo

ci -

E-P

R-4

IVA

PA

TB

NX

X10

0-4A

-0

PM-DWDM

Ethernet control

Raman pump laser

λ8

D1


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


Signal Propagation Time measurement step 2


λ1

λ7

100 km

DOM #2

Shore Station

MOD

λ8

λ1


2xCu

2xCu1% TAP

Timing Calib.on/off

50/50 coupler



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


Oclaro - PT10XGC


Oclaro -TL5000VCJ

λ8

Mirror

C1

C3 C2

OFM 1

FD

K –

YS

-500

-15

5

LiNbO3

Jun

ctio

n B

ox

D2

D3



Fo

ci

- M

-DT-

1-I

-L-H

-R-1

0-A

P/A

P-

1

Fo

ci -

E-P

R-4

IVA

PA

TB

NX

X10

0-4A

-0

PM-DWDM

Ethernet control

Raman pump laser

λ8

D1


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

reflected

R-EAM

Δt⇉ signal path length


Switch for Propagation Timing


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

FD

K –

YS

-500

-15

5

Optical fibre

Variable Optical Attenuator


Determination of the Optical signal levels


λ1

λ7

100 km

DOM #2

Shore Station

MOD

λ8

λ1

REAM


2xCu

2xCuDC+AC

1% TAP

Timing Calib.on/off

50/50 coupler



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


Oclaro - PT10XGC


Oclaro -TL5000VCJ

λ8

Mirror

C1

C3 C2

OFM 1

FD

K –

YS

-500

-15

5

LiNbO3

Jun

ctio

n B

ox

D2

D3



Fo

ci

- M

-DT-

1-I

-L-H

-R-1

0-A

P/A

P-

1

Fo

ci -

E-P

R-4

IVA

PA

TB

NX

X10

0-4A

-0

PM-DWDM

Ethernet control

Raman pump laser

λ8

D1


1

3

2

Sequence measurements for optical signal level determination


Attended Spread Sheet Overlay for design control


Functional blocsMain sheet

DATA to main sheet

Conclusions with

error detectsupport

( e.g. min/max values)

Pin_TIA

amplifierCW Laser channelPassive components

1

Approachand

Formula depiction


Test Bench @ Nikhef


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


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 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.


Optical Communication Setup


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


Component Inventory for prototype optical network


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


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.

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


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 ZwartMechanics,Gertjan Mul, Auke Korporaal, Edward Berbee, Hans Kok, Rene de Boer, Herman Boer RookhuizenCoordination, Eric Heine


RAMS


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 .

. .

Electronic department Photonics-oriented data transmission network for the KM3NeT prototype detector...

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Transcript of Electronic department Photonics-oriented data transmission network for the KM3NeT prototype detector...