Post on 19-Jan-2016
May 16, 2006
TERENA Networking Conference 2006, Catania, Italy 1
Parametric Amplification and Multiple Wavelength Conversion in
HNLF: Experimentation and Modelling
Miroslav KARÁSEK,Jiří Kaňka, Jan Radil
Josef Vojtěch
experimentation modelling
May 16, 2006
TERENA Networking Conference 2006, Catania, Italy 2
Parametric Amplification and Wavelength Conversion in HNLF
third- order parametric processes involve non-linear interactions among 4 optical waves and include 3rd harmonic generation, FWM and parametric amplification3rd - order non-linear polarization PNL=ε0χ(3):EEE
χ(3)…. tensor of 3rd – order susceptibilitysignificant FWM occurs only if the phase mismatch Θ=(k1+k2-k3-k4)z-(ω1+ ω2- ω3- ω4)t vanishes, or when Δk=k3+k4-k1-k2= (n3ω3+n4ω4- n1ω1- n2ω2)/c≈0
May 16, 2006
TERENA Networking Conference 2006, Catania, Italy 3
Parametric Amplification and Wavelength Conversion in HNLF
frequency
am
plit
ude
ω1ω331ω221
ω113
ω321ω3ω2ω231
ω223 ω332
ω332
ω112ω223
ω231 ω321
ω123 ω132ω221
ω331
ω113 ω112
strong pumps
signal
idler
May 16, 2006
TERENA Networking Conference 2006, Catania, Italy 4
Parametric Amplification and Wavelength Conversion in HNLF
λp1
EDFA
RFG1
PC
OBPF
λp2
λs
phase modul.
(λp1+ λp2)/2
OSA
RFG2
PC
HNLF
PM
OSC
DEMUX
10%
95%
5%
90%
1%
May 16, 2006
TERENA Networking Conference 2006, Catania, Italy 5
Parametric Amplification and Wavelength Conversion in HNLF
experiment
4 spools of HNLF, λ0=1532nm, 1546nm, 1560nm, and 1560nm, length 500m, 500m, 1000m, and 1500m, D’=0.019-0.021ps/(nm2km), =10.5 W-1 km-1
2 RF generators Agilent HP E8257D and E4436BRF power combiners and RF amplifier, Mini-Circuits: ZFSC-2-2500, ZHL-42WOscilloscope Infinniun 86100C 10 Gbit/s multipurpose platform Cisco 15454Pump seeds: LC25W WDM LDsEDFA Keopsys
May 16, 2006
TERENA Networking Conference 2006, Catania, Italy 6
Parametric Amplification and Wavelength Conversion in HNLF
experiment
1545 1550 1555 1560 1565 1570 1575
-60
-40
-20
0
po
we
r, d
Bm
wavelength, nm
amplification of 4 WDM channels#31 - #34
signals
pump
idlers
May 16, 2006
TERENA Networking Conference 2006, Catania, Italy 7
Parametric Amplification and Wavelength Conversion in HNLF
experiment
1545 1550 1555 1560 1565 1570 1575
-60
-40
-20
0
po
we
r, d
Bm
wavelength, nm
signals idlers
pump
amplification of 4 WDM channels#35 - #38
May 16, 2006
TERENA Networking Conference 2006, Catania, Italy 8
Parametric Amplification and Wavelength Conversion in HNLF
experiment
1540 1545 1550 1555 1560 1565 1570 1575 1580 1585
-60
-50
-40
-30
-20
-10
0
10
20
Po
we
r (d
B)
Wavelength (nm)
Pump OFF Pump ON
p1
= 1562.20 nm
p2
= 1563.00 nm
s = 1549.32 nm
SignalsPump
Idlers
Fiber OPA@WC
-12.55
0.0
Pin,avg
pump ~ 400 mW
May 16, 2006
TERENA Networking Conference 2006, Catania, Italy 9
Parametric Amplification and Wavelength Conversion in HNLF
experiment
signal #35 (1549.32nm)
copy #37 (1547.72nm)
May 16, 2006
TERENA Networking Conference 2006, Catania, Italy 10
Parametric Amplification and Wavelength Conversion in HNLF
experiment
Copy #33 (1550.92 nm)
copy #31 (1552.52nm)
May 16, 2006
TERENA Networking Conference 2006, Catania, Italy 11
1520 1540 1560 1580 1600 1620-70
-60
-50
-40
-30
-20
-10
0
10
p1
= 1562.20 nm
p2
= 1563.00 nm
Pin,avg
pump :
Po
we
r (d
B)
wavelength, nm
89 mW 182 mW 252 mW 362 mW 534 mW
Parametric Amplification and Wavelength Conversion in HNLF
experiment parametric amplified spontaneous emissioneffect of pump power
May 16, 2006
TERENA Networking Conference 2006, Catania, Italy 12
Parametric Amplification and Wavelength Conversion in HNLF
experiment
1540 1550 1560
-40
-20
0
20
0=1546nm, L
HNLF=500m,
p1=1548.51nm,
p2=1549.32nm, P
edfa=29.4dBm,
s=1554.94nm, f
m1=100MHz(-10dBm), f
m2=420MHz (-10dBm)
po
we
r, d
Bm
wavelength, nm
signal in anomalous dispersion region
May 16, 2006
TERENA Networking Conference 2006, Catania, Italy 13
Parametric Amplification and Wavelength Conversion in HNLF
simulations
Parametric amplification and single wavelength conversion have been simulated by numerical solution of coupled-wave equationsFor numerical simulations of Multiple Wavelength Conversion we have used commercial packages, OptSim 3.5 (ARTIS) and OptiSystem 4.0 (Optiwave)
May 16, 2006
TERENA Networking Conference 2006, Catania, Italy 14
Parametric Amplification and Wavelength Conversion in HNLF
simulations
2 1/ 2
2 1/ 2
2 1/ 2
2 1/ 2 2 1/ 2
4 ( ) sin
2 ( ) sin
2 ( ) sin (1)
(2 ) ( / ) ( / )
pp s i
sp s i
ip s i
p s i p i s p s i
dPP PP
dzdP
P PPdzdP
P PPdzd
P P P P P P P P Pdz
1/ 24( ) cos ,
( ) ( ) 2 ( ), ( ) ( ) 2 ( )
s i
s i p s i p
PP
z z z
May 16, 2006
TERENA Networking Conference 2006, Catania, Italy 15
Parametric Amplification and Wavelength Conversion in HNLF
simulations
1530 1540 1550 1560 1570 1580
0
5
10
15
ga
in, d
Bwavelength, nm
Pp=200mW
300mW 500mW 700mW
p=1561nm, P
s=1mW
1530 1540 1550 1560 1570 1580 1590-30
-20
-10
0
10
p=1561nm, P
s=1mW
con
vers
ion
ga
in, d
B
idler wavelength, nm
Pp=200mW
300mW 700mW effect of pump power
signal gainparametricconversion
gain
May 16, 2006
TERENA Networking Conference 2006, Catania, Italy 16
Parametric Amplification and Wavelength Conversion in HNLF
simulations
1530 1540 1550 1560 1570 1580
0
5
10
15
ga
in, d
Bm
wavelength, nm
p=1561nm
1562nm 1563nm 1564nm
Pp=500mW, P
s=1mW
effect of pump wavelength off-set
from zero dispersion wavelength
May 16, 2006
TERENA Networking Conference 2006, Catania, Italy 17
Parametric Amplification and Wavelength Conversion in HNLF
simulations
1530 1540 1550 1560 1570 1580
0
5
10
15
20
gain
, dB
wavelength, nm
Ps
in= -10dBm
-3dBm 0dBm 10dBm
effect of signal power on
spectral dependence of gain
May 16, 2006
TERENA Networking Conference 2006, Catania, Italy 18
Parametric Amplification and Wavelength Conversion in HNLF
simulations
1530 1540 1550 1560 1570 1580 1590
-40
-30
-20
-10
0
10
20
po
we
r, d
Bm
wavelength, nm
PpumpEDFA
=350mW, Psignal
=1mW
SPM split of pumps
May 16, 2006
TERENA Networking Conference 2006, Catania, Italy 19
Parametric Amplification and Wavelength Conversion in HNLF
simulation
1530 1540 1550 1560 1570 1580 1590-40
-30
-20
-10
0
10
20
po
we
r, d
Bm
wavelength, nm
PpumpEDFA
= 350mW
400mW 500mW 600mW
parametric amplified spontaneous emissioneffect of pump power
May 16, 2006
TERENA Networking Conference 2006, Catania, Italy 20
Parametric Amplification and Wavelength Conversion in HNLF
Conclusions
We have verified that simulation results based on numerical solution of coupled-wave equations and commercial simulation packages are in qualitative agreement with experiments of parametric amplification and wavelength conversion in HNL fibresProblems to be solved:
suppression of SBS ASE elimination