Miroslav Karsek

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

• Miroslav Karásek
• Jirí Kanka
• Pavel Honzátko
• Josef Vojtech
• Jan Radil

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

• Motivation
• Experimental results
• Conclusions

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

• 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

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

• 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

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40 Gb/s Multi-Wavelength Conversion Based on
Nonlinear Effects in HNLF
Autocorrelation traces before and after filtering
Supercontinuum generated by propagating
expanded pulses through 1500m of HNLF
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40 Gb/s Multi-Wavelength Conversion Based on
Nonlinear Effects in HNLF
Optical power of the SC sliced at 1558.3 nm
Eye diagram of the SC sliced at 1558.3 nm
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40 Gb/s Multi-Wavelength Conversion Based on
Nonlinear Effects in HNLF
Results of numerical simulations
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40 Gb/s Multi-Wavelength Conversion Based on
Nonlinear Effects in HNLF
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40 Gb/s Multi-Wavelength Conversion Based on
Nonlinear Effects in HNLF
Autocorrelation trace at the HNLF input
SC spectra for different HNLFs
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40 Gb/s Multi-Wavelength Conversion Based on
Nonlinear Effects in HNLF
Optical power of the slice at 1548.5 nm
Autocorrelation trace of the slice at 1548.5 nm
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40 Gb/s Multi-Wavelength Conversion Based on
Nonlinear Effects in HNLF
SC spectrum for different HNLFs simulation
Sliced SC after demultiplexing/ multiplexing of
11 ITU channels
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40 Gb/s Multi-Wavelength Conversion Based on
Nonlinear Effects in HNLF Conclusions

• 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

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40 Gb/s Multi-Wavelength Conversion Based on
Nonlinear Effects in HNLF Thank you for your
attention!