Mid-infrared 2000-nm bandwidth supercontinuum generation in suspended-core microstructured Sulfide and Tellurite optical fibers

Savelli, I.; Mouawad, O.; Fatome, Julien; Kibler, Bertrand; Desevedavy, Frédéric; Gadret, Grégory; Jules, Jean‐Charles; Bony, Pierre-Yves; Kawashima, Hiroki; Gao, Weiqing; Kohoutek, T.; Suzuki, Takenobu; Ohishi, Yasutake; Smektala, F.

doi:10.1364/oe.20.027083

Cited by 100 publications

(71 citation statements)

References 44 publications

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“…Finally, as chalcogenide glasses can be drawn in fibers and owing to the recent progress in fabrication techniques, long interaction length and very low propagation losses can be relied upon. Demonstration of FWM and Raman gain in the telecom band has already been shown in [13][14][15], together with Raman scattering at 2 µm [16] and supercontinuum generation in the MIR [17][18][19]. Recently we observed preliminary results on FWM at 2 µm in an AsSe PCF [20].…”

Section: Introductionmentioning

confidence: 60%

Characterization and modeling of microstructured chalcogenide fibers for efficient mid-infrared wavelength conversion

Xing¹,

Grassani²,

Kharitonov³

et al. 2016

Opt. Express

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We experimentally demonstrate wavelength conversion in the 2 µm region by four-wave mixing in an AsSe and a GeAsSe chalcogenide photonic crystal fibers. A maximum conversion efficiency of −25.4 dB is measured for 112 mW of coupled continuous wave pump in a 27 cm long fiber. We estimate the dispersion parameters and the nonlinear refractive indexes of the chalcogenide PCFs, establishing a good agreement with the values expected from simulations. The different fiber geometries and glass compositions are compared in terms of performance, showing that GeAsSe is a more suited candidate for nonlinear optics at 2 µm. Building from the fitted parameters we then propose a new tapered GeAsSe PCF geometry to tailor the waveguide dispersion and lower the zero dispersion wavelength (ZDW) closer to the 2 µm pump wavelength. Numerical simulations shows that the new design allows both an increased conversion efficiency and bandwidth, and the generation of idler waves further in the mid-IR regions, by tuning the pump wavelength in the vicinity of the fiber ZDW.

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Section: Introductionmentioning

confidence: 60%

Characterization and modeling of microstructured chalcogenide fibers for efficient mid-infrared wavelength conversion

Xing¹,

Grassani²,

Kharitonov³

et al. 2016

Opt. Express

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show abstract

“…They are due to either sidewall scattering/surface smoothness and multiphonon absorption [1,12] or absorption in the polymer coating [14,19], significantly impacting their FOM. Soft glass suspended core fibers (SCFs) with low loss have been fabricated in recent years [16,20,21]. Due to the large refractive index difference, such SCFs are highly multimode, which both limits the amount of power effectively coupled to the fundamental mode and affects the phase matching condition of the parametric process [20].…”

Section: Introductionmentioning

confidence: 99%

Mid-infrared continuous-wave parametric amplification in chalcogenide microstructured fibers

Xing¹,

Grassani²,

Kharitonov³

et al. 2017

Optica

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The persistent growth of interest in the middle infrared (MIR) is stimulating the development of sources and components. Novel waveguides and fibers for the efficient use of nonlinear effects in the MIR are being intensively studied. Highly nonlinear silica fibers have enabled record performances of highly versatile parametric processes in the telecommunication band. However, no waveguiding platforms (to our knowledge) have yet solved the trade-off among high nonlinearity, low propagation losses and dispersion in the MIR. As single waveguide designs have not yet hit this particular optimal point, only pulsed-pumped demonstrations have been carried out, hindering any application requiring narrow linewidth, continuous-wave (c.w.) operation, or signal modulation. Here, we show MIR c.w. parametric amplification in a Ge 10 As 22 Se 68 tapered fiber. Leveraging state-of-the-art fabrication techniques, we use a photonic crystal fiber (PCF) geometry combining high nonlinearity and low dispersion, while maintaining single mode and low losses in the short-wave IR and MIR. We experimentally demonstrate 5 dB signal amplification and 3 dB idler conversion efficiency using only 125 mW of pump in the 2 μm wavelength range. Our result is not only the first c.w. parametric amplification measured at 2 μm in any waveguide, but it also establishes GeAsSe PCF tapers as the most promising all-fibered, high-efficiency parametric converter for advanced applications in the MIR.

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“…Also in silica suspended core PCFs, Mergo et al obtained nearly octave spanning supercontinua using as pump various wavelengths between 740 and 880 nm (Mergo et al 2008). More recent reports were focused on suspended core PCFs drawn from different non-silica glasses, with transmission windows enabling midinfrared generation (Domachuk et al 2008;El-Amraoui et al 2010;Savelii et al 2011Savelii et al , 2012. It is to be noted, that for photonic crystal fibers drawn from soft glasses, suspended core geometry enables reduction of thermal processing steps to the minimum, thus helping to avoid recrystallization of glass.…”

Section: Introductionmentioning

confidence: 99%

Mid-infrared supercontinuum generation in soft-glass suspended core photonic crystal fiber

et al. 2013

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Supercontinuum from 800 to 2,600 nm has been obtained in a soft glass suspendedcore photonic crystal fiber. The fiber has been fabricated using an in-house synthesized, lead-bismuth-galate oxide glass (PBG-08), which has a transmission window from 500 nm to 4,500 nm. Dispersion characteristic has been designed to enable efficient pumping in the anomalous regime, using typical telecommunication wavelengths and influence of discrepancy between design and physical dispersion profile of fiber is discussed. An optical parametric amplifier system seeded with a Ti:Sapphire oscillator has been used as a light source (70 fs pulses with 100 kHz repetition rate). Supercontinuum bandwidth on the midinfrared side is limited by OH − absorption of the glass and presence of second zero-dispersion wavelength in the spectral area of interest. Flatness the spectrum remains under 7 dB from roughly 1,800 nm to about 2,500 nm.

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Mid-infrared 2000-nm bandwidth supercontinuum generation in suspended-core microstructured Sulfide and Tellurite optical fibers

Cited by 100 publications

References 44 publications

Characterization and modeling of microstructured chalcogenide fibers for efficient mid-infrared wavelength conversion

Characterization and modeling of microstructured chalcogenide fibers for efficient mid-infrared wavelength conversion

Mid-infrared continuous-wave parametric amplification in chalcogenide microstructured fibers

Mid-infrared supercontinuum generation in soft-glass suspended core photonic crystal fiber

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