pof system simulation- showing the real potential of pof links · 2010-01-21 · juri vinogradov 24...
TRANSCRIPT
Juri Vinogradov
24 March 2009
www.pofac.de
1
POF System Simulation-
Showing the real Potential
of POF links
J. Vinogradov, R. Kruglov, S. Loquai,
O. Ziemann, C.-A. Bunge,
Polymer Optical Fiber Application Center
University of Applied Sciences Nürnberg
Deutsche Telekom Hochschule für Telekommunikation Leipzig
(FH), University of Applied Sciences
Juri Vinogradov
24 March 2009
www.pofac.de
2
Mathematical and experimental based
models for different fibers
Using of different photo diodes
and optical sources
Changing of physical parameters in
simulation by user
Optimization of equalization techniques
Simulation of different modulation types
(e.g. PAM, DMT)
Simulation of eye diagrams, constellations
and BER calculation
Integration of fiber models with circuit simulation(e.g. PSpice)
Requirements on the simulation tool
Overview
PSpice
Simulink
Improvements
DMT Simulation
System
DFE Simulation
Juri Vinogradov
24 March 2009
www.pofac.de
3Fast SI-POF system overview
what‘s possible over 100 m standard POF
(step index, 1 mm, class A4a.2)
Siemens 2006: 1.00 Gbit/s over 100 m
SI-POF with DMT and FEC
POF-AC 2007: 1.39 Gbit/s over 100 m
SI-POF with passive equalizer
Siemens 2007: 1.51 Gbit/s over 100 m
SI-POF with DMT and FEC
TU Munich 2008: 2.00 Gbit/s over 100 m
SI-POF with FFE/DFE (BER < 10-3)
....
PSpice
Simulink
Improvements
DMT Simulation
Overview
what‘s possible over 100 m standard POF
(step index, 1 mm, class A4a.2)
Siemens 2006: 1.00 Gbit/s over 100 m
SI-POF with DMT and FEC
POF-AC 2007: 1.39 Gbit/s over 100 m
SI-POF with passive equalizer
Siemens 2007: 1.51 Gbit/s over 100 m
SI-POF with DMT and FEC
TU Munich 2008: 2.00 Gbit/s over 100 m
SI-POF with FFE/DFE (BER < 10-3)
....
System
DFE Simulation
Juri Vinogradov
24 March 2009
www.pofac.de
4
Mitsubishi GH-4001 100 m
Popt +6.7 dBm
S5052 800 µm
Received opt. Power -2.94 dBm
TIA Rx -15 dBm@650 nm
Passive Equalizer
1.39 Gbit/s over 100 m SI-POF
Our system (POF-AC 2007)
Tx Rx Equalizer Amplifier Low passPOF
PSpice
Improvements
DMT Simulation
System
Overview
Simulink
DFE Simulation
Juri Vinogradov
24 March 2009
www.pofac.de
5
1 10 100 1000-40
-30
-20
-10
0
Amplitude variation (experiment)Gaussian function
-2
0
2
el.Level [dB]
frequency [MHz]
SI-POF TORAY
PFU-CD1001:
Length - 50 m;
NA=0.46
Fiber modelling
PSpice
Simulink
Improvements
DMT Simulation
Overview
System
DFE Simulation
Juri Vinogradov
24 March 2009
www.pofac.de
6The optimized equalizer (hand made)
5 SMD resistors
(size 0805)
1 SMD capacitor (var)
f3dB :35 - 176 MHz
180
90
60 nH
90
60 nH
6.5 pFOverview
PSpice
Simulink
Improvements
DMT Simulation
System
DFE Simulation
Juri Vinogradov
24 March 2009
www.pofac.de
7Measurement and simulation
-18
-16
-14
-12
-10
-8
-6
-4
-2
0
1 10 100 1000 10000
Frequency [MHz]
P [dB]
16 dB equalizing
2.5 GHz bandwidth
only 1 dB insertion loss
Measurement
Simulation
Overview
PSpice
Simulink
Improvements
DMT Simulation
System
DFE Simulation
Juri Vinogradov
24 March 2009
www.pofac.de
8Simulation Tools
PSpice
Direct design for electrical circuits
Lot of electrical components available
(FET, OpAmp)
Analog Behavioral Modeling (ABM)
PRBS Sources, eye diagram, BER, I/Q
must be implemented
Simulink
Instrument for Eye, BER or I/Q Measurements RF toolbox
Better handling with mathematical expression and experimental data (e.g. Phase response)
Overview
Simulink
Improvements
DMT Simulation
System
PSpice
DFE Simulation
Juri Vinogradov
24 March 2009
www.pofac.de
9PSpice Model of S5052; 12 V; 650 nm
-30 -27 -24 -21 -18 -15 -12
-9 -6 -3 0
10 100 1000 10000 f [MHz]
rel. Ampl. [dB]
Simulation Measurement
LBOND
3.1nH
CDRIFT
321.3 p
CCASE
0.12p
RSUBSTRAT
3.36
CJUNC
3.32 p
REr
50 M
ZLOAD
+-
U/IRDRIFT
1
LDRIFT
125.6 pH
VAC
Electrons/Holes drift circuit Parasitic circuit
Overview
Simulink
Improvements
DMT Simulation
PSpice
System
DFE Simulation
Juri Vinogradov
24 March 2009
www.pofac.de
10Example 1.25 Gbit/s over 50 m SI-POF
-600 -400 -200 0 200 400 600 Time [ps]
100 50 0 -50 -100
Level [mV]
-600 -400 -200 0 200 400 600 Time [ps]
20 10 0 -10 -20
Level [mV]
-600 -400 -200 0 200 400 600 Time [ps]
100 50 0 -50 -100
Level [mV]
-600 -400 -200 0 200 400 600 Time [ps]
20 10 0 -10 -20
Level [mV]
without equalizer
with equalizer
Measurement and PSpice SimulationOverview
Simulink
Improvements
DMT Simulation
PSpice
System
DFE Simulation
Juri Vinogradov
24 March 2009
www.pofac.de
11Intermediate remarks
PSpice is suitable for the simulation of POF
transmission systems
POF transfer function can be implemented
as frequency, amplitude and phase
(network analyzer measurement data S21)
Implementation of Phase response is difficult
Non-Causality
PRBS signal, Eye diagram, BER calculation
are not included in PSpice
(made by self or application notes)
new approach: Simulink !
Overview
Simulink
Improvements
DMT Simulation
PSpice
System
DFE Simulation
Juri Vinogradov
24 March 2009
www.pofac.de
12Simulation with Simulink
PD
S5052 EqualizerSI-POF
100 m
Mitsubishi
LD Out
Out Out
Low pass
TIA
Dr. Roman Kruglov
bitdetector
RxOut
Out
Out
Rx
Tx
Error Rate
Calculation
Tx
Rx
Display
1.276 E8
Discrete Time
Eye Diagram
Scope
53
4.153 E9
Discrete Time
Eye Diagram
Scope
Overview
Simulink
Improvements
DMT Simulation
PSpice
System
DFE Simulation
Juri Vinogradov
24 March 2009
www.pofac.de
13
Parameters:
Photodiode material
Bulk dark current [A]
Surface dark current [A]
Bias voltage [V]
i-layer thickness [m]
Capacitance [F]
Inductance [H]
Series resistance [Ohm]
Diameter [m]
Samples per symbol [N]
Photo diode dialog box (example)
Overview
Simulink
Improvements
DMT Simulation
PSpice
System
DFE Simulation
Juri Vinogradov
24 March 2009
www.pofac.de
141.39 Gbit/s over 100 m Mitsubishi SI-POF
Measured and simulated eye diagram
Time [ns]
0.2 0.6 1.0 1.4 1.8
Time [ns]
0.2 0.6 1.0 1.4 1.8
650 nm LD, +6.5 dBm
received power: -11 dBm
BER 10-9
Overview
Simulink
Improvements
DMT Simulation
PSpice
System
DFE Simulation
Juri Vinogradov
24 March 2009
www.pofac.de
15
BER vs. bit rate
1.0E-09
1.0E-08
1.0E-07
1.0E-06
1.0E-05
1.0E-04
1.0E-03
1.0E-02
1400 1450 1500 1550 1600 1650 1700 1750 1800
BER
Bit rate [Mbit/s]
Measurement
Simulation
1.39 Gbit/s over 100 m Mitsubishi SI-POF
Overview
Simulink
Improvements
DMT Simulation
PSpice
System
DFE Simulation
Juri Vinogradov
24 March 2009
www.pofac.de
16
simulated system improvement with
optimized equalizer (ideal)
Time [ns]
0.2 0.6 1.0 1.4 1.8
Time [ns]
0.2 0.6 1.0 1.4 1.8
Better eye opening due to an ideal equalizer
Penalty 4.2 dB instead 9.1 dB
System improvement by optimized equalizer: 5.0 dB
1.39 Gbit/s over 100 m Mitsubishi SI-POF
Overview
Simulink
Improvements
DMT Simulation
PSpice
System
DFE Simulation
Juri Vinogradov
24 March 2009
www.pofac.de
17Improvements
Step 1: Laboratory
optimized equalizers (e.g. as FFE)
low noise receivers
fully integrated optical receivers
Step 2: real systems - is it possible with SI-POF ?
stabilized, long life transmitter
50 m transmission link with connectors, bends, fiber ageing…
Overview
Improvements
DMT Simulation
PSpice
Simulink
System
DFE Simulation
Juri Vinogradov
24 March 2009
www.pofac.de
181.25 Gbit/s over 50 m POF
Time [ns]
0.2 0.6 1.0 1.4 1.8
Measured and simulated eye diagrams
650 nm laser diode
+6 dBm
sensitivity: -16 dBm
(BER 10-9)
POF loss: 8 dB
margin: 14 dB
Time [ns]
0.2 0.6 1.0 1.4 1.8
Overview
Improvements
DMT Simulation
PSpice
Simulink
System
DFE Simulation
Juri Vinogradov
24 March 2009
www.pofac.de
19optimized 50 m system (simulation)
650 nm laser diode
0 dBm fiber coupled power
optimized equalizer (ideal), low noise receiver
sensitivity approx.: -18 dBm (BER 10-9)
POF loss: 8 dB
margin: 10 dB
Time [ns]
0.0 0.6 1.2 1.8 2.6
Overview
Improvements
DMT Simulation
PSpice
Simulink
System
DFE Simulation
Juri Vinogradov
24 March 2009
www.pofac.de
20Outlook and conclusion
Gigabit Ethernet over 50 m SI-POF is
possible (with huge power margin)
how to realize the optimized equalizer ?
- adaptive analog
- DMT
- FFE/DFE
Simulink is a possible design tool
not only for NRZ
- DMT system (Siemens)
- DFE/FFE system (TU Munich)
Overview
Improvements
PSpice
Simulink
System
DFE Simulation
DMT Simulation
Juri Vinogradov
24 March 2009
www.pofac.de
21DMT over SI-POF
S. C. Jeffrey Lee, F. Breyer, S. Randel, R. Gaudino, G.
Bosco, A. Bluschke, M. Matthews, P. Rietzsch, R.
Steglich, H. P. A. van den Boom and A. M. J. Koonen:
“Discrete Multitone Modulation for Maximizing
Transmission Rate in Step-Index Plastic Optical
Fibres”, to be published in JLT
100 m SI-POF Mitsubishi
650 nm Laser diode
TZA 3023 TIA; 600 µm PD
1.62 Gbit/s
256 Subchannels
Average BER 1 10-3 (FEC-limit)
Bandwidth 312.5 MHz
Overview
DMT simulation
PSpice
Simulink
Improvements
System
DFE Simulation
Juri Vinogradov
24 March 2009
www.pofac.de
22
1.0E-05
1.0E-04
1.0E-03
1.0E-02
0 50 100 150 200 250 300 350 400
0
1
2
3
4
5
6
7
8
allocated bitsBER
Channels
Bit allocation and simulated BER
Total BER 3 10-3
DMT over SI-POF
Overview
DMT simulation
PSpice
Simulink
Improvements
System
DFE Simulation
Juri Vinogradov
24 March 2009
www.pofac.de
23
QAM 128 QAM 4
DMT over SI-POF
Overview
DMT simulation
PSpice
Simulink
Improvements
System
DFE Simulation
Juri Vinogradov
24 March 2009
www.pofac.de
24
-6
-5
-4
-3
-2
-1
0
-16 -15 -14 -13 -12 -11 -10 -9
log (BER)
received power [dBm]
2.00 Gbit/s over 100 m SI-POF with DFE
Overview
PSpice
Simulink
Simulation
Improvements
System
DFE Simulation
DMT Simulation
Juri Vinogradov
24 March 2009
www.pofac.de
25
See more results on the POF conference
presented by Dr. Roman Kruglov Sydney,
09.-11. Sept. 2009
Overview
PSpice
Simulink
Improvements
System
DMT Simulation
DFE Simulation
Juri Vinogradov
24 March 2009
www.pofac.de
26
POF System Simulation-
Showing the real Potential
of POF links
J. Vinogradov, R. Kruglov, S. Loquai,
O. Ziemann, C. A. Bunge,
Polymer Optical Fiber Application Center
University of Applied Sciences Nürnberg
Deutsche Telekom Hochschule für Telekommunikation Leipzig
(FH), University of Applied Sciences
Juri Vinogradov
24 March 2009
www.pofac.de
27optimized 50 m system
-12
-11
-10
-9
-8
-7
-6
-5
-4
-3
-2
-22 -21 -20 -19 -18 -17 -16
log (BER)
received power [dBm]
Measurement
Simulation
Overview
Improvements
DMT Simulation
Analog equalizer
PSpice
Simulink