Fabrication and Qualitative Analysis of an Optical Fibre EFPI-Based Temperature Sensor
| Autor: | Mohamed Oubaha, Emma Tobin, Muhammad Mahmood Ali, Fintan McGuinness, Gabriel Leen, Dinesh Babu Duraibabu, Aidan J. Cloonan, Gerald Kilkelly |
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| Rok vydání: | 2021 |
| Předmět: |
Hot Temperature
Optical fiber Materials science Fabrication Capillary action polymer Polishing TP1-1185 02 engineering and technology engineering.material high sensitivity 01 natural sciences Biochemistry Article Analytical Chemistry law.invention 010309 optics EFPI 020210 optoelectronics & photonics Coating sensor law 0103 physical sciences optical Physical Sciences and Mathematics 0202 electrical engineering electronic engineering information engineering Fiber Optic Technology Electrical and Electronic Engineering Composite material Instrumentation Diaphragm (optics) Optical Fibers Fused quartz Chemical technology temperature Atomic and Molecular Physics and Optics Interferometry fibre engineering Optical |
| Zdroj: | Articles Sensors, Vol 21, Iss 4445, p 4445 (2021) Sensors (Basel, Switzerland) Sensors Volume 21 Issue 13 |
| ISSN: | 1424-8220 |
| Popis: | The following presents a comparison of an extrinsic Fabry–Perot interferometer (EFPI)-based temperature sensor, constructed using a novel diaphragm manufacturing technique, with a reference all-glass EFPI temperature sensor. The novel diaphragm was manufactured using polyvinyl alcohol (PVA). The novel sensor fabrication involved fusing a single-mode fibre (SMF) to a length of fused quartz capillary, which has an inner diameter of 132 μm and a 220 μm outer diameter. The capillary was subsequently polished until the distal face of the capillary extended approximately 60 μm beyond that of the single mode fibre. Upon completion of polishing, the assembly is immersed in a solution of PVA. Controlled extraction resulted in creation of a thin diaphragm while simultaneously applying a protective coating to the fusion point of the SMF and capillary. The EFPI sensor is subsequently sealed in a second fluid-filled capillary, thereby creating a novel temperature sensor structure. Both temperature sensors were placed in a thermogravimetric analyser and heated from an indicated 30 °C to 100 °C to qualitatively compare sensitivities. Initial results indicated that the novel manufacturing technique both expedited production and produces a more sensitive sensor when compared to an all-glass construction. |
| Databáze: | OpenAIRE |
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