Stressed waveguides with tubular depressed-cladding inscribed in phosphate glasses by femtosecond hollow laser beams

Abstract : We report on the single-step fabrication of stressed optical waveguides with tubular depressed-refractive-index cladding in phosphate glasses by the use of focused femtosecond hollow laser beams. Tubelike low index regions appear under direct exposure due to material rarefaction following expansion. Strained compacted zones emerged in domains neighboring the tubular track of lower refractive index, and waveguiding occurs mainly within the tube core fabricated by the engineered femtosecond laser beam. The refractive index profile of the optical waveguide was reconstructed from the measured transmitted near-field intensity.
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https://hal-ujm.archives-ouvertes.fr/ujm-00719775
Contributor : Razvan Stoian <>
Submitted on : Friday, July 20, 2012 - 6:15:33 PM
Last modification on : Wednesday, July 25, 2018 - 2:05:30 PM

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  • HAL Id : ujm-00719775, version 1

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Xuewen Long, Jing Bai, Zhao Wei, Razvan Stoian, Rongqing Hui, et al.. Stressed waveguides with tubular depressed-cladding inscribed in phosphate glasses by femtosecond hollow laser beams. Optics Letters, Optical Society of America, 2012, 37 (15), pp.3138. ⟨ujm-00719775⟩

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