Temperature Sensor Based on Periodically Tapered Optical Fibers
In this paper, the fabrication and characterization of a temperature sensor based on periodically tapered optical fibers (PTOF) are presented. The relation between the geometry of the sensors and sensing ability was investigated in order to find the relatively simple structure of a sensor. Four type...
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| Format: | Article |
| Language: | English |
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MDPI AG
2021-12-01
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| Series: | Sensors |
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| Online Access: | https://www.mdpi.com/1424-8220/21/24/8358 |
| _version_ | 1797500760282365952 |
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| author | Bartlomiej Guzowski Mateusz Łakomski |
| author_facet | Bartlomiej Guzowski Mateusz Łakomski |
| author_sort | Bartlomiej Guzowski |
| collection | DOAJ |
| description | In this paper, the fabrication and characterization of a temperature sensor based on periodically tapered optical fibers (PTOF) are presented. The relation between the geometry of the sensors and sensing ability was investigated in order to find the relatively simple structure of a sensor. Four types of PTOF structures with two, four, six and eight waists were manufactured with the fusion splicer. For each PTOF type, the theoretical free spectral range (FSR) was calculated and compared with measurements. The experiments were conducted for a temperature range of 20–70 °C. The results proved that the number of the tapered regions in PTOF is crucial, because some of the investigated structures did not exhibit the temperature response. The interference occurring inside the structures with two and four waists was found be too weak and, therefore, the transmission dip was hardly visible. We proved that sensors with a low number of tapered regions cannot be considered as a temperature sensor. Sufficiently more valuable results were obtained for the last two types of PTOF, where the sensor’s sensitivity was equal to 0.07 dB/°C with an excellent linear fitting (<i>R</i><sup>2</sup> > 0.99). The transmission dip shift can be described by a linear function (<i>R</i><sup>2</sup> > 0.97) with a slope α > 0.39 nm/°C. |
| first_indexed | 2024-03-10T03:08:28Z |
| format | Article |
| id | doaj.art-36f8e200d8654b35a71c6f737ebde2f1 |
| institution | Directory Open Access Journal |
| issn | 1424-8220 |
| language | English |
| last_indexed | 2024-03-10T03:08:28Z |
| publishDate | 2021-12-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Sensors |
| spelling | doaj.art-36f8e200d8654b35a71c6f737ebde2f12023-11-23T10:30:21ZengMDPI AGSensors1424-82202021-12-012124835810.3390/s21248358Temperature Sensor Based on Periodically Tapered Optical FibersBartlomiej Guzowski0Mateusz Łakomski1Department of Semiconductor and Optoelectronic Devices, Lodz University of Technology, 93-590 Lodz, PolandDepartment of Semiconductor and Optoelectronic Devices, Lodz University of Technology, 93-590 Lodz, PolandIn this paper, the fabrication and characterization of a temperature sensor based on periodically tapered optical fibers (PTOF) are presented. The relation between the geometry of the sensors and sensing ability was investigated in order to find the relatively simple structure of a sensor. Four types of PTOF structures with two, four, six and eight waists were manufactured with the fusion splicer. For each PTOF type, the theoretical free spectral range (FSR) was calculated and compared with measurements. The experiments were conducted for a temperature range of 20–70 °C. The results proved that the number of the tapered regions in PTOF is crucial, because some of the investigated structures did not exhibit the temperature response. The interference occurring inside the structures with two and four waists was found be too weak and, therefore, the transmission dip was hardly visible. We proved that sensors with a low number of tapered regions cannot be considered as a temperature sensor. Sufficiently more valuable results were obtained for the last two types of PTOF, where the sensor’s sensitivity was equal to 0.07 dB/°C with an excellent linear fitting (<i>R</i><sup>2</sup> > 0.99). The transmission dip shift can be described by a linear function (<i>R</i><sup>2</sup> > 0.97) with a slope α > 0.39 nm/°C.https://www.mdpi.com/1424-8220/21/24/8358optical fiberoptical sensortapered optical fibertemperature sensor |
| spellingShingle | Bartlomiej Guzowski Mateusz Łakomski Temperature Sensor Based on Periodically Tapered Optical Fibers Sensors optical fiber optical sensor tapered optical fiber temperature sensor |
| title | Temperature Sensor Based on Periodically Tapered Optical Fibers |
| title_full | Temperature Sensor Based on Periodically Tapered Optical Fibers |
| title_fullStr | Temperature Sensor Based on Periodically Tapered Optical Fibers |
| title_full_unstemmed | Temperature Sensor Based on Periodically Tapered Optical Fibers |
| title_short | Temperature Sensor Based on Periodically Tapered Optical Fibers |
| title_sort | temperature sensor based on periodically tapered optical fibers |
| topic | optical fiber optical sensor tapered optical fiber temperature sensor |
| url | https://www.mdpi.com/1424-8220/21/24/8358 |
| work_keys_str_mv | AT bartlomiejguzowski temperaturesensorbasedonperiodicallytaperedopticalfibers AT mateuszłakomski temperaturesensorbasedonperiodicallytaperedopticalfibers |