| Autor: |
Kaiming Zhou, Adebayo Adedotun, Zhijun Yan, Lin Zhang |
| Přispěvatelé: |
Berghmans, Francis, Mignani, Anna G., de Moor, Piet |
| Jazyk: |
angličtina |
| Rok vydání: |
2012 |
| Předmět: |
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| Popis: |
We demonstrate highly sensitive temperature and strain sensors based on an all-fiber Lyot filter structure, which is formed by concatenating two 45°-TFGs (tilted fiber gratings) with a PM fiber cavity. The experiment results show the all-fiber 45°-TFG Lyot filter has very high sensitivity to strain and temperature. The 45°-TFG Lyot filters of two different cavity lengths (18cm and 40 cm) have been evaluated for temperature sensing by heating a section of the cavity from 10°C to 50°C. The experiment results have shown remarkably high temperature sensitivities of 0.616nm/°C for 18cm and 0.31nm/°C for 40cm long cavity filter, respectively. The 18cm long cavity filter has been subjected to strain variations up to around 550μ e and the filter has exhibited strain sensitivities of 0.02499nm/μ e and 0.012nm/μ e for two straining situations, where its cavity middle section of 18cm and 9cm were stretched, respectively. |
| Databáze: |
OpenAIRE |
| Externí odkaz: |
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