Miroslav KarásekJiří Kaňka

Pavel HonzátkoJosef Vojtěch

Jan Radil

40 Gb/s Multi-Wavelength Conversion Based on Nonlinear Effects in HNLF

May 30 , 2006 CEF workshop, Prague, Czech Republic 2

40 Gb/s Multi-Wavelength Conversion Based on Nonlinear Effects in HNLF

Outline

Motivation

Experimental results

Conclusions

May 30 , 2006 CEF workshop, Prague, Czech Republic 3

Current optical networks perform multicasting in network nodes in costly high-speed O-E-O transponders

All-optical wavelength conversion (WC) is an attractive technology for WDM multicasting

Optical multicasting is an important issue in optical grid networks

Several methods for all-optical WC has been demonstrated based on cross-absorption in EA modulators, delay interferometers in SOA, FWM in SOA, pulsed pumped parametric amplification and slicing of SC generated in HNLF

40 Gb/s Multi-Wavelength Conversion Based on Nonlinear Effects in HNLF

Motivation

May 30 , 2006 CEF workshop, Prague, Czech Republic 4

40 Gb/s Multi-Wavelength Conversion Based on Nonlinear Effects in HNLF

EDFA1

OBPF1

PM

PC1

HNLF

OSA OSC

10%

TMLL-1550

OBPF2

optical switch

10%1%

EDFA2

OBPF3 PC2

AC

May 30 , 2006 CEF workshop, Prague, Czech Republic 5

Signal source: passively mode-locked LD, PMLLD (with saturable absorber) generating sech2 shaped pulses with FWHM 3ps

AC autocorrelator

High-power EDFA1 and pre-amplifier EDFA2

Optical Time Domain Multiplexer (OTDM)

Digital sampling oscilloscope Infiniium 54855A with optical heads to 10 GHz

40 Gb/s Multi-Wavelength Conversion Based on Nonlinear Effects in HNLF

May 30 , 2006 CEF workshop, Prague, Czech Republic 6

40 Gb/s Multi-Wavelength Conversion Based on Nonlinear Effects in HNLF

0 20 40 60 80 100 120 140

0.0

0.2

0.4

0.6

0.8

1.0

pow

er,

arbi

trar

y un

its

time, ps

PMLLD filtered PMLLD

1545 1550 1555 1560 1565-70

-60

-50

-40

-30

-20

-10

po

we

r, d

Bm

wavelength, nm

PEDFA2

=21dBm

23dBm 24dBm 25dBm

input

Autocorrelation traces before and after filtering

Supercontinuum generatedby propagating expanded

pulses through 1500m of HNLF

May 30 , 2006 CEF workshop, Prague, Czech Republic 7

40 Gb/s Multi-Wavelength Conversion Based on Nonlinear Effects in HNLF

1556 1558 1560-70

-60

-50

-40

-30

-20

-10

0

po

we

r, d

Bm

wavelength, nm

Optical power of the SC sliced at 1558.3 nm

Eye diagram of the SC sliced at 1558.3 nm

May 30 , 2006 CEF workshop, Prague, Czech Republic 8

40 Gb/s Multi-Wavelength Conversion Based on Nonlinear Effects in HNLF

1545 1550 1555 1560 1565

-40

-30

-20

-10

0

10

pow

er,

dBm

wavelength, nm

HNLF input power PEDFA

=21dBm23dBm

25dBm

Results of numerical simulations

May 30 , 2006 CEF workshop, Prague, Czech Republic 9

40 Gb/s Multi-Wavelength Conversion Based on Nonlinear Effects in HNLF

EDFA1

OBPF2

PM

PC1

HNLF

OSA

OSC

1%

PMLLD

optical switch

1% 1%

EDFA2

PC2

AC

EDFA3

OTDM

1%

OBPF1

May 30 , 2006 CEF workshop, Prague, Czech Republic 10

40 Gb/s Multi-Wavelength Conversion Based on Nonlinear Effects in HNLF

1530 1540 1550 1560 1570-40

-30

-20

-10

pow

er,

dBm

wavelength, nm

HNLF1

HNLF2

HNLF3

0 20 40 60 80 100 120 140 160

0.00

0.05

0.10

0.15

0.20

0.25

0.30

po

wer

, a

rbitr

ary

un

its

time, ps

Autocorrelation trace at the HNLF input

SC spectra for different HNLFs

May 30 , 2006 CEF workshop, Prague, Czech Republic 11

40 Gb/s Multi-Wavelength Conversion Based on Nonlinear Effects in HNLF

1540 1542 1544 1546 1548 1550 1552 1554

-80

-70

-60

-50

-40

pow

er,

dBm

wavelength, nm

0 20 40 60 80 100 120 140 160

0.00

0.05

0.10

0.15

0.20

0.25

pow

er,

arbi

trar

y un

its

time, ps

Optical power of the slice at 1548.5 nm

Autocorrelation trace of the slice at 1548.5 nm

May 30 , 2006 CEF workshop, Prague, Czech Republic 12

40 Gb/s Multi-Wavelength Conversion Based on Nonlinear Effects in HNLF

1530 1540 1550 1560 1570

-30

-20

-10

0

pow

er,

dB

m

wavelength, nm

HNLF1

HNLF2

HNLF3

1540 1550 1560 1570-40

-30

-20

-10

0

pow

er,

dBm

wavelength, nm

SC spectrum for different HNLFssimulation

Sliced SC after demultiplexing/multiplexing of 11 ITU channels

May 30 , 2006 CEF workshop, Prague, Czech Republic 13

We investigated, both experimentally and by numerical simulation, all-optical multi-wavelength conversion of 10 Gb/s NRZ signals based on 2-pumps FWM

10 Gb/s and 40 Gb/s RZ all-optical multi-casting system was based on slicing the supercontinuum generated in HNLF.

Simulations were performed with OptSim 3.5 and reasonable quantitative agreement between experimental and numerical results was achieved using realistic data given by the HNLF manufacturer

40 Gb/s Multi-Wavelength Conversion Based on Nonlinear Effects in HNLF

Conclusions

May 30 , 2006 CEF workshop, Prague, Czech Republic 14

40 Gb/s Multi-Wavelength Conversion Based on Nonlinear Effects in HNLF

Thank you for your attention!