Saidin, Norazlina and Baba, Tamana and Muzafar, Nurul Addeeni and Raja Ahmad Farid, Raja Zarith Batrisyia and Ahmad Shaharuddin, Siti Shafiqah and Sing, Lim Kok and Abdul Karim, Julia and Hasbullah, Nurul Fadzlin (2026) Comparative neutron irradiation effects on structural (B/Ge) and rare-earth (Er/Yb) doped silica fibers: Photoluminescence and application specific performance analysis. Comparative neutron irradiation effects on structural (B/Ge) and rare-earth (Er/Yb) doped silica fibers: Photoluminescence and application specific performance analysis, 248 (114037). pp. 1-14.
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Abstract
The resilience of optical fibers in radiation-rich environments is increasingly critical for applications in space communications, nuclear facilities, and high-power photonics. While extensive studies have been conducted on either structurally doped fibers or rare-earth doped fibers, comparative insights across these two fundamental classes remain limited. This work systematically investigates the effects of neutron irradiation on Boron- and Germanium-doped fibers (structural dopants) alongside Erbium- and Ytterbium-doped fibers (rare-earth dop ants). Photoluminescence (PL) spectroscopy was employed as a universal diagnostic probe to evaluate radiation- induced modifications in optical properties, while application-specific performance metrics were separately analyzed: reflectivity and Bragg wavelength shifts for Boron and Germanium, and the output power and amplified spontaneous emission (ASE) for Erbium and Ytterbium. The results reveal distinct radiation responses: Boron-doped fibers exhibit strong PL quenching and pronounced Bragg wavelength shifts, highlighting their potential as sensitive radiation dosimeters; Germanium-doped fibers display moderate PL variation and minimal wavelength shifts, underscoring their spectral stability; Erbium-doped fibers suffer severe ASE degradation (>40 dB loss), reflecting poor radiation tolerance; while Ytterbium-doped fibers retain emission stability with modest losses (15–20 dB), demonstrating structural resilience. By unifying the analysis of structural and rare- earth dopants, this study bridges a critical gap in fiber radiation research and provides a comprehensive framework for tailoring dopant selection according to both optical response and application-specific performance in harsh environments.
| Item Type: | Article (Journal) |
|---|---|
| Uncontrolled Keywords: | Boron Germanium Erbium-doped fiber Ytterbium-doped fiber Photoluminescence spectroscopy Neutron irradiation |
| Subjects: | T Technology > TK Electrical engineering. Electronics Nuclear engineering > TK9001 Nuclear engineering. Atomic power |
| Kulliyyahs/Centres/Divisions/Institutes (Can select more than one option. Press CONTROL button): | Kulliyyah of Engineering > Department of Electrical and Computer Engineering |
| Depositing User: | Norazlina Saidin |
| Date Deposited: | 10 Jul 2026 20:11 |
| Last Update: | 10 Jul 2026 20:11 |
| Queue Number: | 2026-07-Q4065 |
| URI: | http://irep.iium.edu.my/id/eprint/129835 |
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