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Coupled-core fiber Bragg gratings for low-cost sensing
- Source :
- Scientific Reports, Addi. Archivo Digital para la Docencia y la Investigación, instname, Scientific Reports, Vol 12, Iss 1, Pp 1-9 (2022)
- Publication Year :
- 2021
-
Abstract
- [EN] Sensors based on Bragg gratings inscribed in conventional single mode fibers are expensive due to the need of a sophisticated, but low-speed, interrogation system. As an alternative to overcome this issue, in this work, it is proposed and demonstrated the use of coupled-core optical fiber Bragg gratings. It was found that the relative reflectivity from such gratings changed when the coupled-core fiber was subjected to point or periodic bending. This feature makes the interrogation of such gratings simple, fast, and cost-effective. The reflectivity changes of the gratings are attributed to the properties of the supermodes supported by the coupled-core fiber. As potential applications of the referred gratings, intensity-modulated vector bending and vibration sensing are demonstrated. We believe that the results reported here can pave the way to the development of many inexpensive sensors. Besides, coupled-core fiber Bragg gratings may expand the use of grating technology in other areas.<br />This work is part of the Projects No. PGC2018-101997-B-I00 and RTI2018-094669-B-C31 funded by the MCIN/AEI/10.13039/501100011033/and FEDER, Una manera de hacer Europa; and the scholarship PAID-01-18 Granted by the Universitat Politecnica de Valencia.
Details
- ISSN :
- 20452322 and 20181019
- Volume :
- 12
- Issue :
- 1
- Database :
- OpenAIRE
- Journal :
- Scientific reports
- Accession number :
- edsair.doi.dedup.....0391d5ee9b5956fb5f3892760cf9b1d1