Supercontinuum generation in suspended core microstructured tellurite optical fibers

Savelii, iI.; Jules, Jean‐Charles; Gadret, Grégory; Kibler, Bertrand; Fatome, Julien; El-Amraoui, Mohammed; Dudley, John M.; Troles, J.; Brilland, Laurent; Renversez, Gilles; Smektala, Frédéric

doi:10.1117/12.886414

Cited by 5 publications

(4 citation statements)

References 22 publications

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“…In recent years, several experimental and theoretical investigations on mid-infrared SC generation were reported in ChG planar waveguides [13][14][15], ChG fibers [16][17][18][19][20][21][22][23][24][25][26][27][28], single crystal sapphire fibers [29], silicon-on-insulator (SOI) wire waveguides [30], ZBLAN fiber [31], fluoride glass [32] and germano-silicate fibers [33]. Gai et al [13] reported SC generation from 2.9 µm to 4.2 µm in dispersion-engineered As 2 S 3 glass rib waveguide (6.6 cm long) pumped with 7.5 ps duration pulses at a wavelength of 3.26 µm with a pulse peak power of around 2 kW.…”

Section: Introductionmentioning

confidence: 99%

Mid-infrared supercontinuum generation using dispersion-engineered Ge_115As_24Se_645 chalcogenide channel waveguide

Karim¹,

Rahman²,

Agrawal³

2015

Opt. Express

112

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This is the accepted version of the paper.This version of the publication may differ from the final published version. Permanent repository link Abstract:We numerically investigate mid-infrared supercontinuum (SC) generation in dispersion-engineered, air-clad, Ge 11.5 As 24 Se 64.5 chalcogenide-glass channel waveguides employing two different materials, Ge 11.5 As 24 S 64.5 or MgF 2 glass for their lower cladding. We study the effect of waveguide parameters on the bandwidth of the SC at the output of 1-cm-long waveguide. Our results show that output can vary over a wide range depending on its design and the pump wavelength employed. At the pump wavelength of 2 µm the SC never extended beyond 4.5 µm for any of our designs. However, supercontinuum could be extended to beyond 5 µm for a pump wavelength of 3.1 µm. A broadband SC spanning from 2 µm to 6 µm and extending over 1.5 octave could be generated with a moderate peak power of 500 W at a pump wavelength of 3.1 µm using an air-clad, all-chalcogenide, channel waveguide. We show that SC can be extended even further when MgF 2 glass is used for the lower cladding of chalcogenide waveguide. Our numerical simulations produced SC spectra covering the wavelength range 1.8-7.7 µm (> two octaves) by using this geometry. Both ranges exceed the broadest SC bandwidths reported so far. Moreover, we realize it using 3.1 µm pump source and relatively low peak power pulses. By employing the same pump source, we show that SC spectra can cover a wavelength range of 1.8-11 µm (> 2.5 octaves) in a channel waveguide employing MgF 2 glass for its lower cladding with a moderate peak power of 3000 W.

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Section: Introductionmentioning

confidence: 99%

Mid-infrared supercontinuum generation using dispersion-engineered Ge_115As_24Se_645 chalcogenide channel waveguide

Karim¹,

Rahman²,

Agrawal³

2015

Opt. Express

112

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“…SEM images of various tellurite glass micro structured fibers (a) core diameters varying from 1.6 to 2.2 µm. (b) the same fiber at different scales [70]. …”

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confidence: 99%

Springer Handbook of Glass

2019

Springer Handbooks

177

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Numerous innovations in photonics were realized on the base of nonlinear optical properties and notably in information technologies. To take advantage of nonlinear optical properties of glass, multidisciplinary research efforts were necessary combining optics, glass chemistry, material science as well as development of optical or electrical polarizations processes. This chapter addresses both fundamental aspects of the nonlinear optical responses, but also the exploitation of nonlinear optical phenomena in glassy material. It starts by a general introduction on nonlinear optical phenomena and concepts. Then, the specific cases of second and third optical responses in glasses are treated separately and described in details as a function of the corresponding optical phenomena, the different glass families and the applications.

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“…However, the enormous design flexibility to tailor the nonlinearity and the dispersion profile comes along with a limited spectral coverage of the wavelength region above 3 µm. [11][12][13][14] This is due to increased absorption related to…”

Section: Introductionmentioning

confidence: 99%

“…Most reports about tellurite glass fibers in the literature have been based on microstructured optical fibers pumped in the near-IR. [11][12][13][14][15] These fibers show enhanced nonlinearities due to the small core sizes and engineered zero dispersion wavelengths (ZDWs) below 2 µm, allowing for anomalous dispersion pumping with conventional laser systems. However, the enormous design flexibility to tailor the nonlinearity and the dispersion profile comes along with a limited spectral coverage of the wavelength region above 3 µm.…”

Section: Introductionmentioning

confidence: 99%

Solitonic supercontinuum of femtosecond mid-IR pulses in W-type index tellurite fibers with two zero dispersion wavelengths

et al. 2016

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We present a detailed experimental parameter study on mid-IR supercontinuum generation in W-type index tellurite fibers, which reveals how the core diameter, pump wavelength, fiber length, and pump power dramatically influence the spectral broadening. As pump source, we use femtosecond mid-IR pulses from a post-amplified optical parametric oscillator tunable between 1.7 μm and 4.1 μm at 43 MHz repetition rate. We are able to generate red-shifted dispersive waves up to a wavelength of 5.1 μm by pumping a tellurite fiber in the anomalous dispersion regime between its two zero dispersion wavelengths. Distinctive soliton dynamics can be identified as the main broadening mechanism resulting in a maximum spectral width of over 2000 nm with output powers of up to 160 mW. We experimentally demonstrated that efficient spectral broadening with considerably improved power proportion in the important first atmospheric transmission window between 3 and 5 μm can be achieved in robust W-type tellurite fibers pumped at long wavelengths by ultra-fast lasers.

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Supercontinuum generation in suspended core microstructured tellurite optical fibers

Cited by 5 publications

References 22 publications

Mid-infrared supercontinuum generation using dispersion-engineered Ge_115As_24Se_645 chalcogenide channel waveguide

Mid-infrared supercontinuum generation using dispersion-engineered Ge_115As_24Se_645 chalcogenide channel waveguide

Springer Handbook of Glass

Solitonic supercontinuum of femtosecond mid-IR pulses in W-type index tellurite fibers with two zero dispersion wavelengths

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