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Low short-wavelength loss fiber Bragg gratings inscribed in a small-core fiber by femtosecond laser point-by-point technology.
Opt Lett. 2019 Nov 01; 44(21):5121-5124.OL

Abstract

A femtosecond-laser-induced fiber Bragg grating (FBG) usually has a higher insertion loss at the shorter wavelength than at the reflection wavelength, i.e., so-called short-wavelength loss. High-quality FBGs are inscribed in different types of small-core single-mode fibers (SMFs) by the use of femtosecond laser point-by-point technology in order to investigate the effect of the fiber core diameter on the grating inscription efficiency and on the short-wavelength loss. A lower laser pulse energy is required to achieve the same grating reflectivity in a smaller-core fiber than in a large-core fiber. The short-wavelength loss of the small-core FBG is lower than that of the large-core FBG with the same reflectivity. Furthermore, a series of FBGs with a low short-wavelength loss are inscribed in a small-core SMF along the fiber axis to achieve so-called series-integrated FBGs (SI-FBGs). Finally, the effect of the input light direction on the reflection peak of the SI-FBGs is investigated to reduce the influence of the grating short-wavelength loss in the sensing and communication applications.

Authors

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Pub Type(s)

Journal Article

Language

eng

PubMed ID

31674946

Citation

Liu, Xueya, et al. "Low Short-wavelength Loss Fiber Bragg Gratings Inscribed in a Small-core Fiber By Femtosecond Laser Point-by-point Technology." Optics Letters, vol. 44, no. 21, 2019, pp. 5121-5124.
Liu X, Wang Y, Li Z, et al. Low short-wavelength loss fiber Bragg gratings inscribed in a small-core fiber by femtosecond laser point-by-point technology. Opt Lett. 2019;44(21):5121-5124.
Liu, X., Wang, Y., Li, Z., Liu, S., Wang, Y., Fu, C., Liao, C., Bai, Z., He, J., Li, Z., & Shao, L. (2019). Low short-wavelength loss fiber Bragg gratings inscribed in a small-core fiber by femtosecond laser point-by-point technology. Optics Letters, 44(21), 5121-5124. https://doi.org/10.1364/OL.44.005121
Liu X, et al. Low Short-wavelength Loss Fiber Bragg Gratings Inscribed in a Small-core Fiber By Femtosecond Laser Point-by-point Technology. Opt Lett. 2019 Nov 1;44(21):5121-5124. PubMed PMID: 31674946.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - Low short-wavelength loss fiber Bragg gratings inscribed in a small-core fiber by femtosecond laser point-by-point technology. AU - Liu,Xueya, AU - Wang,Yiping, AU - Li,Ziliang, AU - Liu,Shen, AU - Wang,Ying, AU - Fu,Cailing, AU - Liao,Changrui, AU - Bai,Zhiyong, AU - He,Jun, AU - Li,Zhengyong, AU - Shao,Laipeng, PY - 2019/11/2/entrez PY - 2019/11/2/pubmed PY - 2019/11/2/medline SP - 5121 EP - 5124 JF - Optics letters JO - Opt Lett VL - 44 IS - 21 N2 - A femtosecond-laser-induced fiber Bragg grating (FBG) usually has a higher insertion loss at the shorter wavelength than at the reflection wavelength, i.e., so-called short-wavelength loss. High-quality FBGs are inscribed in different types of small-core single-mode fibers (SMFs) by the use of femtosecond laser point-by-point technology in order to investigate the effect of the fiber core diameter on the grating inscription efficiency and on the short-wavelength loss. A lower laser pulse energy is required to achieve the same grating reflectivity in a smaller-core fiber than in a large-core fiber. The short-wavelength loss of the small-core FBG is lower than that of the large-core FBG with the same reflectivity. Furthermore, a series of FBGs with a low short-wavelength loss are inscribed in a small-core SMF along the fiber axis to achieve so-called series-integrated FBGs (SI-FBGs). Finally, the effect of the input light direction on the reflection peak of the SI-FBGs is investigated to reduce the influence of the grating short-wavelength loss in the sensing and communication applications. SN - 1539-4794 UR - https://www.unboundmedicine.com/medline/citation/31674946/Low_short_wavelength_loss_fiber_Bragg_gratings_inscribed_in_a_small_core_fiber_by_femtosecond_laser_point_by_point_technology_ DB - PRIME DP - Unbound Medicine ER -
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