Design of optical fiber delay line with large delay range and low insertion loss
For the application of continuously adjustable optical fiber delay lines, a large delay range can increase the instrument’s measurement range. Increased insertion loss of components will reduce the signal-to-noise ratio of the collected signal, ultimately limiting the measurement accuracy of the ins...
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| Format: | Article |
| Language: | English |
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Frontiers Media S.A.
2024-02-01
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| Series: | Frontiers in Physics |
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| Online Access: | https://www.frontiersin.org/articles/10.3389/fphy.2024.1362101/full |
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| _version_ | 1841560969830989824 |
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| author | Kai Wang Kai Wang Anqi Liu Xinxin Kong Zhou Wu Rui Zhang Wenxi Zhang |
| author_facet | Kai Wang Kai Wang Anqi Liu Xinxin Kong Zhou Wu Rui Zhang Wenxi Zhang |
| author_sort | Kai Wang |
| collection | DOAJ |
| description | For the application of continuously adjustable optical fiber delay lines, a large delay range can increase the instrument’s measurement range. Increased insertion loss of components will reduce the signal-to-noise ratio of the collected signal, ultimately limiting the measurement accuracy of the instrument. In order to take into account both large delay range and low insertion loss in design, a spatial light transmission and fiber coupling model based on scalar diffraction theory was established and the insertion loss was equivalently calculated through the coupling efficiency of the coupling lens. Then, we analyze the impact of optical fiber delay line’s structural parameters and adjustment errors on coupling efficiency. By optimizing lens group parameters and limiting adjustment tolerances, we can reduce the insertion loss of optical fiber delay lines in a large delay range and conduct experimental verification. Considering various influencing factors, we use a lens group with a focal length of 12 mm, achieving a coupling efficiency of no less than 92.7% within the delay range of 0–1 m. This theoretical model provides a new quantitative analysis method for improving the performance of the optical fiber delay line. |
| format | Article |
| id | doaj-art-73be0c088cfa42698bf1458401947c7b |
| institution | Kabale University |
| issn | 2296-424X |
| language | English |
| publishDate | 2024-02-01 |
| publisher | Frontiers Media S.A. |
| record_format | Article |
| series | Frontiers in Physics |
| spelling | doaj-art-73be0c088cfa42698bf1458401947c7b2025-01-03T09:13:02ZengFrontiers Media S.A.Frontiers in Physics2296-424X2024-02-011210.3389/fphy.2024.13621011362101Design of optical fiber delay line with large delay range and low insertion lossKai Wang0Kai Wang1Anqi Liu2Xinxin Kong3Zhou Wu4Rui Zhang5Wenxi Zhang6Aerospace Information Research Institute, Chinese Academy of Sciences, Beijing, ChinaSchool of Optoelectronics, University of Chinese Academy of Sciences, Beijing, ChinaAerospace Information Research Institute, Chinese Academy of Sciences, Beijing, ChinaAerospace Information Research Institute, Chinese Academy of Sciences, Beijing, ChinaAerospace Information Research Institute, Chinese Academy of Sciences, Beijing, ChinaAerospace Information Research Institute, Chinese Academy of Sciences, Beijing, ChinaAerospace Information Research Institute, Chinese Academy of Sciences, Beijing, ChinaFor the application of continuously adjustable optical fiber delay lines, a large delay range can increase the instrument’s measurement range. Increased insertion loss of components will reduce the signal-to-noise ratio of the collected signal, ultimately limiting the measurement accuracy of the instrument. In order to take into account both large delay range and low insertion loss in design, a spatial light transmission and fiber coupling model based on scalar diffraction theory was established and the insertion loss was equivalently calculated through the coupling efficiency of the coupling lens. Then, we analyze the impact of optical fiber delay line’s structural parameters and adjustment errors on coupling efficiency. By optimizing lens group parameters and limiting adjustment tolerances, we can reduce the insertion loss of optical fiber delay lines in a large delay range and conduct experimental verification. Considering various influencing factors, we use a lens group with a focal length of 12 mm, achieving a coupling efficiency of no less than 92.7% within the delay range of 0–1 m. This theoretical model provides a new quantitative analysis method for improving the performance of the optical fiber delay line.https://www.frontiersin.org/articles/10.3389/fphy.2024.1362101/fullfiber delay linescalar diffractionfiber couplinginsertion losslens group |
| spellingShingle | Kai Wang Kai Wang Anqi Liu Xinxin Kong Zhou Wu Rui Zhang Wenxi Zhang Design of optical fiber delay line with large delay range and low insertion loss Frontiers in Physics fiber delay line scalar diffraction fiber coupling insertion loss lens group |
| title | Design of optical fiber delay line with large delay range and low insertion loss |
| title_full | Design of optical fiber delay line with large delay range and low insertion loss |
| title_fullStr | Design of optical fiber delay line with large delay range and low insertion loss |
| title_full_unstemmed | Design of optical fiber delay line with large delay range and low insertion loss |
| title_short | Design of optical fiber delay line with large delay range and low insertion loss |
| title_sort | design of optical fiber delay line with large delay range and low insertion loss |
| topic | fiber delay line scalar diffraction fiber coupling insertion loss lens group |
| url | https://www.frontiersin.org/articles/10.3389/fphy.2024.1362101/full |
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