W-type silica fiber with all normal dispersion for high-power coherent supercontinuum generation

Yu Li; Meisong Liao; Jianjun Han; Jie Luo; Yue Meng; Zuying Xu

doi:10.1117/12.3040187

16 August 2024 W-type silica fiber with all normal dispersion for high-power coherent supercontinuum generation

Yu Li, Meisong Liao, Jianjun Han, Jie Luo, Yue Meng, Zuying Xu

Proceedings Volume 13231, 4th International Conference on Laser, Optics, and Optoelectronic Technology (LOPET 2024); 1323121 (2024) https://doi.org/10.1117/12.3040187
Event: 4th International Conference on Laser, Optics, and Optoelectronic Technology (LOPET 2024), 2024, Chongqing, China

Abstract

Concept of utilizing W-type GeO2-doped silica fiber for high power coherent supercontinuum (SC) is firstly proposed. We reveal how the core diameter, inner cladding diameter and GeO₂ doped content of outer cladding dramatically influence dispersion characteristics of W-type fibers. W-type fiber with outer cladding of 80 % GeO2 doped silica and 5 μm core diameter can achieve all normal dispersion (ANDi) from 1.2 to 2.8 μm, and the fiber with such large core diameter can withstand high power SC. SC are numerically simulated in the W-type fiber pumped with femtosecond pulse at 1960 and 1560 nm. The results suggest that the fiber can produce SC with high coherence spanning from 1020 to 2530 nm. The Wtype silica fiber not only enables high power coherent SC generation in the near-infrared range but also facilitates the implementation of an all-fiber system.

(2024) Published by SPIE. Downloading of the abstract is permitted for personal use only.

Citation Download Citation

Yu Li, Meisong Liao, Jianjun Han, Jie Luo, Yue Meng, and Zuying Xu "W-type silica fiber with all normal dispersion for high-power coherent supercontinuum generation", Proc. SPIE 13231, 4th International Conference on Laser, Optics, and Optoelectronic Technology (LOPET 2024), 1323121 (16 August 2024); https://doi.org/10.1117/12.3040187

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KEYWORDS

Optical fibers

Silica

Physical coherence

Supercontinuum generation

Dispersion

Refractive index

Simulations

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