Citation

Chen, Zirui and Wen, Jianxiang and Wang, Bo and Abdul Rashid, Hairul Azhar and Luo, Yanhua and Pang, Fufei and Peng, Gang Ding and Wang, Tingyun (2025) Improving the Radiation Resistance of the Fiber via Bismuth Depositing. IEEE Transactions on Nuclear Science, 72 (5). pp. 1779-1789. ISSN 0018-9499

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Abstract

Erbium-doped fiber (EDF), bismuth-erbium co-doped fiber (BEDF) without bismuth deposited bismuth on the fiber surface (BEDF1), and BEDF with bismuth deposited on the fiber surface (BEDF2) were fabricated. Leveraging the Geant4 toolkit, the theoretical models of BEDFs are established. When the thickness of the bismuth deposited layer is 5~\mu m, the energy deposited in the core is reduced by 49.66% (5.91 MeV). The energy deposited in the core is reduced by 19.7% (1.06 MeV) when Bi3+ ions’ concentration is 10 wt%. EDF, BEDF1, and BEDF2 were irradiated with 0.3-, 0.5-, 0.8-, and 1.5-kGy doses of Co60 source. After radiation with 1.5 kGy, radiation-induced absorption (RIA) of BEDF2 at 1300 nm is 20.31% (1.01 dB/m) lower than that of BEDF1. The radiation induced gain variation (RIGV) and fluorescence lifetime of EDF are decreased with the increase in irradiation dose, while the RIGV and lifetime of BEDF1 and BEDF2 both increased initially and then decreased linearly. The normalized gain of BEDF2 is increased by up to 1.08 dB/m after 0.5-kGy radiation. Bismuth ions in the fiber core improve the radiation resistance of the fiber, and those deposited on the fiber surface further improve the radiation resistance. The research results have reference value and application potential in radiation environment detection and space satellite positioning.

Item Type:	Article
Uncontrolled Keywords:	Optical fiber networks
Subjects:	T Technology > TK Electrical engineering. Electronics Nuclear engineering > TK5101-6720 Telecommunication. Including telegraphy, telephone, radio, radar, television
Divisions:	Faculty of Engineering (FOE)
Depositing User:	Ms Rosnani Abd Wahab
Date Deposited:	30 May 2025 01:23
Last Modified:	30 May 2025 01:23
URII:	http://shdl.mmu.edu.my/id/eprint/13877

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