Radiation Resistance of Ge-doped Multi-Mode Fiber for Optical Links in Collider Experiments
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| Main Authors: | , , , , , , , , |
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| Format: | Preprint |
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2026
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| _version_ | 1866918533008457728 |
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| author | Gong, Datao Hou, Suen Juang, Bo-Jing Liu, Chonghan Liu, Tiankuan Qi, Ming Ye, Jingbo Zhang, Lei Zhang, Li |
| author_facet | Gong, Datao Hou, Suen Juang, Bo-Jing Liu, Chonghan Liu, Tiankuan Qi, Ming Ye, Jingbo Zhang, Lei Zhang, Li |
| contents | The applications of optical links in collider experiments provide the advantage of high-speed data transmission with low mass fibers over distances of a few hundred meters. Ge-doped multi-mode fibers are evaluated for radiation tolerance in ionizing doses of Co-60 gamma rays. The Radiation-Induced Attenuation (RIA) varies significantly depending on doping substances and fabrication technologies. A type of telecom-grade fiber has demonstrated an RIA of 0.05 dB/m under a total ionizing dose of 300 kGy(SiO2). The dependence on dose rate is compared in the range between 5 Gy/hr and 1.4 kGy/hr, and the annealing recovery is observed after the Co-60 source is shielded. The temperature dependence is investigated across a range of -15 oC to room temperature. At cold temperatures, stagnant annealing leads to a substantially higher RIA during irradiation. The recovery of radiation-induced defects is typically within a few hours, resulting in similar RIA levels regardless of the dose rate and temperature during exposure. Ge-doped fibers of chosen fabrication methods are capable of enduring high ionizing doses for use in high-energy physics experiments. |
| format | Preprint |
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arxiv_https___arxiv_org_abs_2601_06822 |
| institution | arXiv |
| publishDate | 2026 |
| record_format | arxiv |
| spellingShingle | Radiation Resistance of Ge-doped Multi-Mode Fiber for Optical Links in Collider Experiments Gong, Datao Hou, Suen Juang, Bo-Jing Liu, Chonghan Liu, Tiankuan Qi, Ming Ye, Jingbo Zhang, Lei Zhang, Li High Energy Physics - Experiment The applications of optical links in collider experiments provide the advantage of high-speed data transmission with low mass fibers over distances of a few hundred meters. Ge-doped multi-mode fibers are evaluated for radiation tolerance in ionizing doses of Co-60 gamma rays. The Radiation-Induced Attenuation (RIA) varies significantly depending on doping substances and fabrication technologies. A type of telecom-grade fiber has demonstrated an RIA of 0.05 dB/m under a total ionizing dose of 300 kGy(SiO2). The dependence on dose rate is compared in the range between 5 Gy/hr and 1.4 kGy/hr, and the annealing recovery is observed after the Co-60 source is shielded. The temperature dependence is investigated across a range of -15 oC to room temperature. At cold temperatures, stagnant annealing leads to a substantially higher RIA during irradiation. The recovery of radiation-induced defects is typically within a few hours, resulting in similar RIA levels regardless of the dose rate and temperature during exposure. Ge-doped fibers of chosen fabrication methods are capable of enduring high ionizing doses for use in high-energy physics experiments. |
| title | Radiation Resistance of Ge-doped Multi-Mode Fiber for Optical Links in Collider Experiments |
| topic | High Energy Physics - Experiment |
| url | https://arxiv.org/abs/2601.06822 |