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Article Dans Une Revue Optics Letters Année : 2018

Large Brillouin gain in Germania-doped core optical fibers up to a 98  mol% doping level

Résumé

Germanosilicate glasses are substantial materials in fiber optic technology that have allowed the control of optical properties such as numerical aperture, photosensitivity, dispersion, nonlinearity, and transparency toward mid-infrared. Here, we investigate stimulated Brillouin scattering in single-mode germanosilicate core fibers with increasing GeO2 content from 3.6 mol% up to 98 mol%. Our results reveal a wide Brillouin frequency shift tunability over more than 3 GHz with a strong decrease down to 7.7 GHz at high GeO2 content owing to the low acoustic velocity, while the Brillouin linewidth significantly broadens up to 100 MHz beyond 50 mol% of GeO2 content. In addition, large Brillouin gain up to 6.5 times larger than in standard silica fibers is also reported by means of a pump–probe experiment.
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hal-02300049 , version 1 (29-09-2019)

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Moïse Deroh, Bertrand Kibler, Hervé Maillotte, Thibaut Sylvestre, Jean Beugnot. Large Brillouin gain in Germania-doped core optical fibers up to a 98  mol% doping level. Optics Letters, 2018, 43 (16), pp.4005 - 4008. ⟨10.1364/OL.43.004005⟩. ⟨hal-02300049⟩
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