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Nonlinear optical properties of polycrystalline silicon core fibers from telecom wavelengths into the mid-infrared spectral region
Univ Southampton, Optoelect Res Ctr, Southampton SO17 1BJ, Hants, England..
Univ Southampton, Optoelect Res Ctr, Southampton SO17 1BJ, Hants, England.;Huazhong Univ Sci & Technol, Wuhan Natl Lab Optoelect, Sch Opt & Elect Informat, Wuhan 430074, Hubei, Peoples R China..
Univ Southampton, Optoelect Res Ctr, Southampton SO17 1BJ, Hants, England..
Univ Southampton, Optoelect Res Ctr, Southampton SO17 1BJ, Hants, England..
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2019 (English)In: Optical Materials Express, ISSN 2159-3930, E-ISSN 2159-3930, Vol. 9, no 3, p. 1271-1279Article in journal (Refereed) Published
Abstract [en]

Polycrystalline silicon core fibers (SCFs) fabricated via the molten core drawing (MCD) method are emerging as a flexible optoelectronic platform. Here, the optical transmission properties of MCD SCFs that have been tapered down to a few micrometer-sized core dimensions are characterized from the telecom band to the mid-infrared spectal regime. The SCFs exhibit low linear losses on the order of a few dB/cm over the entire wavelength range. Characterization of the two-photon absorption coefficient (beta(TPA)) and nonlinear refractive index (n(2)) of the SCFs reveals values consistent with previous measurements of single crystal silicon materials, indicating the high optical quality of the polysilicon core material. The high nonlinear figure of merit obtained for wavelengths above 2 mu m highlight the potential for these fibers to find application in infrared nonlinear photonics. Published by The Optical Society under the terms of the Creative Commons Attribution 4.0 License.

Place, publisher, year, edition, pages
OPTICAL SOC AMER , 2019. Vol. 9, no 3, p. 1271-1279
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Physical Sciences
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URN: urn:nbn:se:kth:diva-247832DOI: 10.1364/OME.9.001271ISI: 000460134500030Scopus ID: 2-s2.0-85071365505OAI: oai:DiVA.org:kth-247832DiVA, id: diva2:1299173
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QC 20190326

Available from: 2019-03-26 Created: 2019-03-26 Last updated: 2019-10-04Bibliographically approved

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Gibson, Ursula J.

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