Collapsed optical fiber: A novel method for improving thermoluminescence response of optical fiber
A new technique is shown to provide improved thermoluminescence (TL) response from optical fibers, based on collapsing down hollow capillary optical fibers (COF) into flat fibers (FF), producing fused inner walls and consequent defects generation. Four different fused silica preform tubes are used t...
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| Format: | Article |
| Language: | English |
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Elsevier
2015
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| Online Access: | http://eprints.um.edu.my/15782/1/Collapsed_optical_fiber_A_novel_method_for_improving_thermoluminescence_response.pdf |
| _version_ | 1825720734000873472 |
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| author | Mahdiraji, G.A. Adikan, Faisal Rafiq Mahamd Bradley, D.A. |
| author_facet | Mahdiraji, G.A. Adikan, Faisal Rafiq Mahamd Bradley, D.A. |
| author_sort | Mahdiraji, G.A. |
| collection | UM |
| description | A new technique is shown to provide improved thermoluminescence (TL) response from optical fibers, based on collapsing down hollow capillary optical fibers (COF) into flat fibers (FF), producing fused inner walls and consequent defects generation. Four different fused silica preform tubes are used to fabricate in-house COFs and FFs, i.e., ultra-pure (F300), relatively pure silica (PS), germanium-doped (Ge), and Ge-Boron-doped (GeB). The optical fibers are then subjected to 6 MeV electron irradiation. While the results show similar TL response from F300-COF and -FF, the TL response of PS-COF is improved by a factor of 6 by collapsing it down to a FF. By doping Ge into the F300 tube, the U response of the resultant Ge-COF shows an improvement of 3 times over that of F300-COF, while an improvement of a factor of 12 is obtained by producing a Ge-FF. In GeB preform, by collapsing the capillary fiber into a FF, an improvement in TL response of 31 times that of GeB-COF is obtained. U glow curve analysis shows an additional peak to be generated in the FFs compared to that observed in the COFs. The TL intensity value of the new peak is significantly increased in the doped FFs compared to the undoped FFs. The results suggest that defects generation occurs as a result of the fusing/collapsing technique, providing a TL response from the optical fibers that can substantially improve upon that of existing TL system sensitivities. (C) 2015 Elsevier B.V. All rights reserved. |
| first_indexed | 2024-03-06T05:39:38Z |
| format | Article |
| id | um.eprints-15782 |
| institution | Universiti Malaya |
| language | English |
| last_indexed | 2024-03-06T05:39:38Z |
| publishDate | 2015 |
| publisher | Elsevier |
| record_format | dspace |
| spelling | um.eprints-157822018-10-11T01:57:33Z http://eprints.um.edu.my/15782/ Collapsed optical fiber: A novel method for improving thermoluminescence response of optical fiber Mahdiraji, G.A. Adikan, Faisal Rafiq Mahamd Bradley, D.A. T Technology (General) TK Electrical engineering. Electronics Nuclear engineering A new technique is shown to provide improved thermoluminescence (TL) response from optical fibers, based on collapsing down hollow capillary optical fibers (COF) into flat fibers (FF), producing fused inner walls and consequent defects generation. Four different fused silica preform tubes are used to fabricate in-house COFs and FFs, i.e., ultra-pure (F300), relatively pure silica (PS), germanium-doped (Ge), and Ge-Boron-doped (GeB). The optical fibers are then subjected to 6 MeV electron irradiation. While the results show similar TL response from F300-COF and -FF, the TL response of PS-COF is improved by a factor of 6 by collapsing it down to a FF. By doping Ge into the F300 tube, the U response of the resultant Ge-COF shows an improvement of 3 times over that of F300-COF, while an improvement of a factor of 12 is obtained by producing a Ge-FF. In GeB preform, by collapsing the capillary fiber into a FF, an improvement in TL response of 31 times that of GeB-COF is obtained. U glow curve analysis shows an additional peak to be generated in the FFs compared to that observed in the COFs. The TL intensity value of the new peak is significantly increased in the doped FFs compared to the undoped FFs. The results suggest that defects generation occurs as a result of the fusing/collapsing technique, providing a TL response from the optical fibers that can substantially improve upon that of existing TL system sensitivities. (C) 2015 Elsevier B.V. All rights reserved. Elsevier 2015-05 Article PeerReviewed application/pdf en http://eprints.um.edu.my/15782/1/Collapsed_optical_fiber_A_novel_method_for_improving_thermoluminescence_response.pdf Mahdiraji, G.A. and Adikan, Faisal Rafiq Mahamd and Bradley, D.A. (2015) Collapsed optical fiber: A novel method for improving thermoluminescence response of optical fiber. Journal of Luminescence, 161. pp. 442-447. ISSN 0022-2313, DOI https://doi.org/10.1016/j.jlumin.2015.01.021 <https://doi.org/10.1016/j.jlumin.2015.01.021>. http://www.sciencedirect.com/science/article/pii/S0022231315000241 10.1016/j.jlumin.2015.01.021 |
| spellingShingle | T Technology (General) TK Electrical engineering. Electronics Nuclear engineering Mahdiraji, G.A. Adikan, Faisal Rafiq Mahamd Bradley, D.A. Collapsed optical fiber: A novel method for improving thermoluminescence response of optical fiber |
| title | Collapsed optical fiber: A novel method for improving thermoluminescence response of optical fiber |
| title_full | Collapsed optical fiber: A novel method for improving thermoluminescence response of optical fiber |
| title_fullStr | Collapsed optical fiber: A novel method for improving thermoluminescence response of optical fiber |
| title_full_unstemmed | Collapsed optical fiber: A novel method for improving thermoluminescence response of optical fiber |
| title_short | Collapsed optical fiber: A novel method for improving thermoluminescence response of optical fiber |
| title_sort | collapsed optical fiber a novel method for improving thermoluminescence response of optical fiber |
| topic | T Technology (General) TK Electrical engineering. Electronics Nuclear engineering |
| url | http://eprints.um.edu.my/15782/1/Collapsed_optical_fiber_A_novel_method_for_improving_thermoluminescence_response.pdf |
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