The Thermo-Optic Discrimination of an Aqueous Solution Composition Using a Multimodal Interference Fiber Optic Sensor †

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AudienciaPúblico en generales_ES
CoberturaMéxicoes_ES
Fecha de ingreso2026-10-05T16:33:52Z
Fecha de publicación2025-01-01
ResumenFiber optics sensors based on multimodal interference (MMI) have proven effective for refractometry of liquid samples. Here, we extend these capabilities to demonstrate that aqueous solutions with a similar refractive index (RI), which at room temperature are indistinguishable at the same concentration, can be discriminated against based on their thermo-optical response. We used an MMI sensor with the standard singlemode–multimode–singlemode architecture, where a section of no-core multimode fiber provides environmental sensitivity to the fiber surroundings. The proposed idea has been tested on aqueous solutions of tris and fructose, whose RI has a similar dependence on concentration. Indeed, we verified that they produce indistinguishable wavelength shifts as a function of concentration, measuring 0.2179 nm/% for tris and 0.2264 nm/% for fructose. Then, by varying the temperature in a controlled manner, from 25 °C to 45 °C in 2.5 °C increments, the distinct thermo-optic response can be unveiled for the two samples, which now permits differentiating them. Thermal sensitivities of 0.14433 nm/°C for tris and 0.1852 nm/°C for fructose were observed. This optical sensor requires no specific preparation or specialized equipment because the temperature range needed to achieve thermo-optical discrimination is accessible. Therefore, the measurement protocol can be incorporated into commercial refractometers equipped with temperature control.es_ES
Doihttps://doi.org/10.3390/engproc2025087054es_ES
URIhttps://riuat.uat.edu.mx/handle/123456789/5617
Idiomaenes_ES
EditorialMultidisciplinary Digital Publishing Institute (MDPI)es_ES
RelaciónEngineering Proceedingses_ES
URL relacionadohttps://doi.org/10.3390/engproc2025087054es_ES
DerechosAcceso abierto (Metadatos de producción científica)es_ES
Licenciahttp://purl.org/coar/access_right/c_abf2es_ES
FuenteEngineering Proceedings
Palabra claveaqueous solutiones_ES
Palabra clavefiber optics sensores_ES
Palabra clavefructosees_ES
Palabra clavemultimode interferencees_ES
Palabra claverefractive indexes_ES
Palabra clavethermo-optic effectes_ES
Palabra clavetrises_ES
TítuloThe Thermo-Optic Discrimination of an Aqueous Solution Composition Using a Multimodal Interference Fiber Optic Sensor †es_ES
TipoArtículoes_ES
ArbitradoHa sido Arbitradoes_ES
AutorDelgadillo-González, Ruth K.
AutorMar-Abundis, Nailea
AutorDomínguez-Cruz, René F.
AutorAmpudia-Ramírez, Federico
AutorFuentes-Rubio, Yadira A.
AutorGuzmán-Sepúlveda, José R.
AutorDelgadillo-González, Ruth K.es_ES
AutorMar-Abundis, Naileaes_ES
AutorDomínguez-Cruz, René F.es_ES
AutorAmpudia-Ramírez, Federicoes_ES
AutorFuentes-Rubio, Yadira A.es_ES
AutorGuzmán-Sepúlveda, José R.es_ES
InstituciónUniversidad Autónoma de Tamaulipas
InstituciónUniversidad Autónoma de Tamaulipases_ES
Número1es_ES
URL relacionadahttps://doi.org/10.3390/engproc2025087054
Tipo de artículoIndexado
Tipo de artículoIndexadoes_ES
Volumen87es_ES

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