Microsphere-Augmented PDMS integration in tapered FBG small-scale sensors for enhanced temperature sensitivity
Bryan Sanipatin, Luis A. Sánchez, Lucía Arques, Salvador Sales · 2024
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Description
A fiber Bragg grating senses temperature by shifting its reflected wavelength, but a bare grating barely moves. The four authors boost it by tapering the fiber, capping it with a microsphere, and embedding the assembly in PDMS polymer inside a silica capillary. The microsphere grips the polymer better, so heat-driven polymer expansion strains the fiber harder. They built versions with taper waists from 60 down to 20 micrometers and tested them from 20 to 90 degrees Celsius.
Sensitivity reached 47.19 picometers per degree at the widest waist and 221.2 at the narrowest, up to 22 times a bare grating. Finite element simulations tied the gain to the extra axial strain the polymer applies. The authors present a sensor that is both smaller and far more sensitive than traditional designs.
Catalog record
| CREATOR | Bryan Sanipatin, Luis A. Sánchez, Lucía Arques, Salvador Sales |
|---|---|
| YEAR | 2024 |
| COLLECTION | PAPERS |
| FORMAT | TXT |
| FILE SIZE | 40 KB |
| VERSION | 1.0 |
| LICENSE | CC BY 4.0 |
| RIGHTS | CC BY |
| SOURCE | Europe PMC |