Experimental investigations on the influence of molten-state duration time upon transmission characteristics of helical long-period fiber gratings

Lunlun Xian

doi:10.1117/12.2606833

1 November 2021 Experimental investigations on the influence of molten-state duration time upon transmission characteristics of helical long-period fiber gratings

Lunlun Xian

Author Affiliations +

Proceedings Volume 12057, Twelfth International Conference on Information Optics and Photonics; 1205746 (2021) https://doi.org/10.1117/12.2606833
Event: Twelfth International Conference on Information Optics and Photonics, 2021, Xi'an, China

Abstract

In this work we defined a simple and valid parameter as molten state duration time (MSDT) in the helical long-period grating (H-LPG) fabricating process. MSDT is the time when the single mode optical fiber (SMF) axially translating one grating pitch during the H-LPG fabricating process of twisting an axially translating molten SMF. The influence of MSDT on the transmission characteristics of the H-LPG is systematically and quantitatively investigated. We obtained a logarithmic function relationship between MSDT and the H-LPG resonant wavelength. As MSDT increases from 14.4 to 51.4 s, the resonant wavelength coupled between LP01 core mode and LP13 cladding mode gradually decreases from 1609.8 to 1573.36nm. By considering the MSDT parameter, the accurate control of H-LPG characteristic spectrum in the fabrication process is improved. The empirical studies, coupled with reasonable explanations, provide additional insight into this kind of H-LPG fabrication mechanism and lead to a more complete explanation of the grating transmission characteristics.

Citation Download Citation

Lunlun Xian "Experimental investigations on the influence of molten-state duration time upon transmission characteristics of helical long-period fiber gratings", Proc. SPIE 12057, Twelfth International Conference on Information Optics and Photonics, 1205746 (1 November 2021); https://doi.org/10.1117/12.2606833

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