Mid-infrared supercontinuum generation in a suspended-core As_2S_3 chalcogenide microstructured optical fiber

Gao, Weiqing; Amraoui, Mohammed El; Liao, Meisong; Kawashima, Hiroki; Duan, Zhongchao; Deng, Dinghuan; Cheng, Tonglei; Suzuki, Takenobu; Messaddeq, Younès; Ohishi, Yasutake

doi:10.1364/oe.21.009573

Cited by 138 publications

(57 citation statements)

References 42 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

109

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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

109

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“…A fabricação relativamente fácil de fibra óptica a partir de vidros calcogenetos permite o confinamento da luz necessário para que a soma dos diferentes efeitos não lineares resultem num supercontínuo de luz. [94][95][96] Recentemente, a geração de um supercontínuo de luz cobrindo a faixa 1,4 -13,3 µm foi obtida numa fibra de calcogeneto. 97 A alta não linearidade dos vidros calcogenetos, como o deslocamento Raman, também pode ser usado para a emissão de luz no infravermelho.…”

Section: Emissão Da Luz No Infravermelhounclassified

“…Assim foi obtido um efeito laser em 3,77 μm em uma fibra calcogeneto através da combinação da não linearidade do material de calcogeneto e a emissão em 3,0 μm obtida numa fibra de fluoreto dopada com érbio Er 3+ . 93,94 A dopagem de vidros calcogenetos com íons de terras raras no intuito de obter emissão no infravermelho também é um domínio muito explorado por vários grupos de pesquisa. [98][99][100] Devido ao seu alto índice de refração e sua baixa energia de fônon, altas seções eficazes de absorção (absorption cross-section) e emissão, assim como baixas relaxações multifonon (e, consequentemente, alto rendimento quântico de luminescência) são esperadas nos vidros calcogenetos.…”

Section: Emissão Da Luz No Infravermelhounclassified

Glassy Materials and Light: Part 1

et al. 2016

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publicado na web em 05/02/2016 GLASSY MATERIALS AND LIGHT: PART 1. 2015 is the Year of Light, according to UNESCO. Chemistry has a close relationship with light and one of the materials that allows such synergy is glass. Depending on the chemical composition of the glass, it is possible to achieve technological applications for the whole range of wavelengths extending from the region of the microwave to gamma rays. This diversity of applications opens a large range of research where chemistry, as a central science, overlaps the fields of physics, engineering, medicine, etc., generating a huge amount of knowledge and technological products used for humanity. This review article aimed at discussing some families of glasses, illustrating some applications. Due to the extension of the theme, and all points raised, we thought it would be good to divide the article into two parts. In the first part we focus on the properties of heavy metal oxide glasses, fluoride glasses and chalcogenide glasses. In the second part we emphasize the properties of glassy thin films prepared by sol-gel methodology and some applications, of both glasses as the films in photonics, and more attention was given to the nonlinear properties and uses of photonic fibers.

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“…Dispersion of the waveguide plays an important role in determining the supercontinuum spectrum. Ideally dispersion near the pump wavelength should be small in magnitude as well as relatively flat in nature [26]. Chalcogenide glasses generally have smaller material dispersion than silicon.…”

Section: Theorymentioning

confidence: 99%

Dispersion engineered Ge_115As_24Se_645 nanowire for supercontinuum generation: A parametric study

Karim¹,

Rahman²,

Agrawal³

2014

Opt. Express

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Abstract:A promising design of Ge 11.5 As 24 Se 64.5 nanowires for supercontinuum generation is proposed through numerical simulations. It can be used for generating a supercontinuum with 1300-nm bandwidth. The dispersion parameters upto eighth-order are obtained by calculating the effective mode index with the finite-element method. We have investigated dispersion curves for a number of nanowire geometries. Through dispersion engineering and by varying dimensions of the nanowires we have identified a promising structure that shows possibility of realizing a wideband supercontinuum. We have found significant variations in its bandwidth with the inclusion of higher-order dispersion coefficients and indicated the possibility of obtaining spurious results if the adequate number of dispersion coefficients is not considered. To confirm the accuracy of dispersion coefficients obtained through numerical computations, we have shown that a data-fitting procedure based on the Taylor series expansion provides good agreement with the actual group velocity dispersion curve obtained by using a full-vectorial finite-element mode-solver.

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Mid-infrared supercontinuum generation in a suspended-core As_2S_3 chalcogenide microstructured optical fiber

Cited by 138 publications

References 42 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

Glassy Materials and Light: Part 1

Dispersion engineered Ge_115As_24Se_645 nanowire for supercontinuum generation: A parametric study

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