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

Xuewen Long 1, 2 Jing Bai 1 Zhao Wei 1 Razvan Stoian 3 Rongqing Hui 4 Guanghua Cheng 1
1 XIOPM - State Key Laboratory of Transient Optics and Photonics
2 Graduate University of Chinese Academy of Sciences
3 LHC - Laboratoire Hubert Curien [Saint Etienne]
4 Department of Electrical Engineering and Computer Science, University of Kansas
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.
Keywords : spatial shaping higher order Bessel beams tubular guides depressed cladding
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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 : Monday, January 13, 2020 - 5:46:02 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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