A simple Fabry-Perot pressure sensor fabricated on fiber optic tip
| Autor: | Pasquale Di Palma, Daniele Natale, Stefania Campopiano, Agostino Iadicicco |
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| Rok vydání: | 2016 |
| Předmět: |
Mode volume
Optical fiber Materials science business.industry Applied Mathematics Single-mode optical fiber Computer Science Applications1707 Computer Vision and Pattern Recognition Polarization-maintaining optical fiber Condensed Matter Physics Graded-index fiber Fabry-Perot interferometer Fiber optic sensors Pressure sensors Electronic Optical and Magnetic Materials Electrical and Electronic Engineering law.invention Optics Fiber optic sensor law Electronic Optical and Magnetic Materials Plastic optical fiber business Photonic-crystal fiber |
| Zdroj: | SPIE Proceedings. |
| ISSN: | 0277-786X |
| Popis: | In this work, we demonstrate an extrinsic pressure sensor realized on single mode fiber tip by means of simple fabrication steps and with low-cost instrumentations. The sensing element consists in a Fabry-Perot cavity: one reflecting surface is the end of the optical fiber, precisely cut, and the other one is a metallic diaphragm. Under the action of the external pressure, the metallic diaphragm bends changing the optical cavity length and, consequently, the characteristics of the reflected signal. The holder structure, which allows the alignment of the fiber tip and reflecting diaphragm, consists in a commercial zirconia ferule with external diameter of Dex = 2.5 mm. Despite its simplicity and cost-effectiveness, the achieved results show performance comparable to more complex and expensive configurations. By using an aluminum plate as reflecting diaphragm. sensitivity ranging in the 70-130pm/mmHg is experimentally. |
| Databáze: | OpenAIRE |
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