Fiber-Optic Skew Ray Sensors

Autor: George Y. Chen, Jinyu Wang, David G. Lancaster
Jazyk: angličtina
Rok vydání: 2020
Předmět:
Zdroj: Sensors, Vol 20, Iss 9, p 2499 (2020)
Druh dokumentu: article
ISSN: 1424-8220
DOI: 10.3390/s20092499
Popis: The evanescent fields along multimode fibers are usually relatively weak. To enhance the sensitivity of the resulting sensors, skew rays have been exploited for their larger number of total internal reflections and their more comprehensive spread over the fiber surface. The uniform distribution of light–matter interactions across the fiber surface facilitates high sensitivity through an increased interaction area, while mitigating the risk of laser-induced coating-material damage and photobleaching. Power-dependent measurements are less susceptible to temperature effects than interferometric techniques, and place loose requirements on the laser source. This review highlights the key developments in this area, while discussing the benefits, challenges as well as future development.
Databáze: Directory of Open Access Journals
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