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May 16, 2006TERENA Networking Conference 2006, Catania, Italy1 Parametric Amplification and Multiple Wavelength Conversion in HNLF: Experimentation and Modelling Miroslav KARÁSEK, Jiří Kaňka, Jan Radil Josef Vojtěch experimentation modelling

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May 16, 2006TERENA Networking Conference 2006, Catania, Italy2 Parametric Amplification and Wavelength Conversion in HNLF third- order parametric processes involve non-linear interactions among 4 optical waves and include 3 rd harmonic generation, FWM and parametric amplification 3 rd - order non-linear polarization P NL =ε 0 χ (3) :EEE χ (3) …. tensor of 3 rd – order susceptibility significant FWM occurs only if the phase mismatch Θ=(k 1 +k 2 -k 3 -k 4 )z-(ω 1 + ω 2 - ω 3 - ω 4 )t vanishes, or when Δk=k 3 +k 4 -k 1 -k 2 = (n 3 ω 3 +n 4 ω 4 - n 1 ω 1 - n 2 ω 2 )/c≈0

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May 16, 2006TERENA Networking Conference 2006, Catania, Italy3 Parametric Amplification and Wavelength Conversion in HNLF frequency amplitude ω1ω1 ω 331 ω 221 ω 113 ω 321 ω3ω3 ω2ω2 ω 231 ω 223 ω 332 ω 112 ω 223 ω 231 ω 321 ω 123 ω 132 ω 221 ω 331 ω 113 ω 112 strong pumps signal idler

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May 16, 2006TERENA Networking Conference 2006, Catania, Italy4 Parametric Amplification and Wavelength Conversion in HNLF λ p1 EDFA RFG 1 PC OBPF λ p2 λsλs phase modul. (λ p1 + λ p2 )/2 OSA RFG 2 PC HNLF PM OSC DEMUX 10% 95% 5% 90% 1%

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May 16, 2006TERENA Networking Conference 2006, Catania, Italy5 Parametric Amplification and Wavelength Conversion in HNLF experiment 4 spools of HNLF, λ 0 =1532nm, 1546nm, 1560nm, and 1560nm, length 500m, 500m, 1000m, and 1500m, D’= ps/(nm 2 km), =10.5 W -1 km -1 2 RF generators Agilent HP E8257D and E4436B RF power combiners and RF amplifier, Mini-Circuits: ZFSC , ZHL-42W Oscilloscope Infinniun 86100C 10 Gbit/s multipurpose platform Cisco Pump seeds: LC25W WDM LDs EDFA Keopsys

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May 16, 2006TERENA Networking Conference 2006, Catania, Italy6 Parametric Amplification and Wavelength Conversion in HNLF experiment amplification of 4 WDM channels #31 - #34 signals pump idlers

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May 16, 2006TERENA Networking Conference 2006, Catania, Italy7 Parametric Amplification and Wavelength Conversion in HNLF experiment signals idlers pump amplification of 4 WDM channels #35 - #38

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May 16, 2006TERENA Networking Conference 2006, Catania, Italy8 Parametric Amplification and Wavelength Conversion in HNLF experiment

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May 16, 2006TERENA Networking Conference 2006, Catania, Italy9 Parametric Amplification and Wavelength Conversion in HNLF experiment signal #35 ( nm) copy #37 ( nm)

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May 16, 2006TERENA Networking Conference 2006, Catania, Italy10 Parametric Amplification and Wavelength Conversion in HNLF experiment Copy #33 ( nm) copy #31 ( nm)

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May 16, 2006TERENA Networking Conference 2006, Catania, Italy11 Parametric Amplification and Wavelength Conversion in HNLF experiment parametric amplified spontaneous emission effect of pump power

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May 16, 2006TERENA Networking Conference 2006, Catania, Italy12 Parametric Amplification and Wavelength Conversion in HNLF experiment signal in anomalous dispersion region

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May 16, 2006TERENA Networking Conference 2006, Catania, Italy13 Parametric Amplification and Wavelength Conversion in HNLF simulations Parametric amplification and single wavelength conversion have been simulated by numerical solution of coupled-wave equations For numerical simulations of Multiple Wavelength Conversion we have used commercial packages, OptSim 3.5 (ARTIS) and OptiSystem 4.0 (Optiwave)

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May 16, 2006TERENA Networking Conference 2006, Catania, Italy14 Parametric Amplification and Wavelength Conversion in HNLF simulations

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May 16, 2006TERENA Networking Conference 2006, Catania, Italy15 Parametric Amplification and Wavelength Conversion in HNLF simulations effect of pump power signal gain parametric conversion gain

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May 16, 2006TERENA Networking Conference 2006, Catania, Italy16 Parametric Amplification and Wavelength Conversion in HNLF simulations effect of pump wavelength off-set from zero dispersion wavelength

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May 16, 2006TERENA Networking Conference 2006, Catania, Italy17 Parametric Amplification and Wavelength Conversion in HNLF simulations effect of signal power on spectral dependence of gain

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May 16, 2006TERENA Networking Conference 2006, Catania, Italy18 Parametric Amplification and Wavelength Conversion in HNLF simulations SPM split of pumps

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May 16, 2006TERENA Networking Conference 2006, Catania, Italy19 Parametric Amplification and Wavelength Conversion in HNLF simulation parametric amplified spontaneous emission effect of pump power

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May 16, 2006TERENA Networking Conference 2006, Catania, Italy20 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 fibres Problems to be solved: suppression of SBS ASE elimination

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