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This study reported an all-fiber sensor based on an asymmetric structured microfiber modal interferometer. The proposed sensor was easily created on a single-mode-fiber(SMF) by means of electric arc discharge technique. The dips of the reflection spectrum caused by the cladding modes interfering with the core mode shifted when the temperature and the refractive index changed. Due to its compact configuration and cost-effective, such new device would have promising applications in sensing fields.
Pei Xian,Guoying Feng, andShouhuan Zhou
"A single-mode fiber temperature and refractive index sensor based on modal interference", Proc. SPIE 10755, Photonic Fiber and Crystal Devices: Advances in Materials and Innovations in Device Applications XII, 107550M (4 September 2018); https://doi.org/10.1117/12.2320895
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Pei Xian, Guoying Feng, Shouhuan Zhou, "A single-mode fiber temperature and refractive index sensor based on modal interference," Proc. SPIE 10755, Photonic Fiber and Crystal Devices: Advances in Materials and Innovations in Device Applications XII, 107550M (4 September 2018); https://doi.org/10.1117/12.2320895