Tunable sensitivity in long period fiber gratings during mode transition with low refractive index intermediate layer
| العنوان: | Tunable sensitivity in long period fiber gratings during mode transition with low refractive index intermediate layer |
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| المؤلفون: | Ignacio Del Villar, Jorge Montoya-Cardona, J.J. Imas, Erick Reyes-Vera, Carlos R. Zamarreno, Ignacio R. Matias, Jose L. Cruz |
| المساهمون: | Universidad Pública de Navarra. Departamento de Ingeniería Eléctrica, Electrónica y de Comunicación, Nafarroako Unibertsitate Publikoa. Ingeniaritza Elektrikoa, Elektronikoa eta Telekomunikazio Ingeniaritza Saila, Universidad Pública de Navarra / Nafarroako Unibertsitate Publikoa. Institute of Smart Cities - ISC |
| المصدر: | Journal of Lightwave Technology. :1-10 |
| بيانات النشر: | Institute of Electrical and Electronics Engineers (IEEE), 2022. |
| سنة النشر: | 2022 |
| مصطلحات موضوعية: | Etching, Sensors, Mode transition, Thin film, Long period fiber grating (LPFG), Tunnel effect, Atomic and Molecular Physics, and Optics |
| الوصف: | Double-clad fibers where the second cladding has a lower refractive index than the first cladding, prove to be ideal structures for potentiating and tuning the sensitivity in long-period fiber gratings (LPFGs) operating in mode transition. When a thin film is deposited on the optical fiber, the second cladding performs acts as a barrier that initially prevents the transition to guidance in the thin film of one of the modes guided in the first cladding. Finally, the transition to guidance occurs with a sensitivity increase, in analogy to the tunnel effect observed in semiconductors. This improvement has been demonstrated both as a function of the thin film thickness and the surrounding medium refractive index, with enhancement factors of 4 and 2, respectively. This idea reinforces the performance of LPFGs, adding a new degree of freedom to the mode transition and the dispersion turning point phenomena. Moreover, the control of the variation of the effective index of cladding modes could be applied in other structures, such as tilted-fiber gratings or evanescent wave sensors. We acknowledge the support of the Agencia Estatal de Investigación of Spain (PID2019-106231RB-I00); the Spanish Ministry of Universities (FPU18/03087 grant); European Commission (H2020 - MSCA-RISE-2019-872049); Generalitat Valenciana (IDIFEDER/2020/064,PROMETEO/2019/048), and the Instituto Tecnologico Metropolitano, project P21101. |
| وصف الملف: | application/pdf |
| تدمد: | 1558-2213 0733-8724 |
| URL الوصول: | https://explore.openaire.eu/search/publication?articleId=doi_dedup___::ece96160386bd7f3394c129f17d42ae4 https://doi.org/10.1109/jlt.2022.3226800 |
| حقوق: | OPEN |
| رقم الأكسشن: | edsair.doi.dedup.....ece96160386bd7f3394c129f17d42ae4 |
| قاعدة البيانات: | OpenAIRE |
| تدمد: | 15582213 07338724 |
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