SMS FIBER TEMPERATURE SENSORS USING OPTICAL TIME-DOMAIN REFLECTOMETRY
DOI:
https://doi.org/10.60787/jnamp.vol69no2.538Keywords:
SMS fiber-optic temperature sensors, Ghost phenomena, Optical TimeDomain Reflectometry (OTDR)Abstract
This paper presents a detailed analysis of ghost phenomena observed in Optical Time-Domain Reflectometry (OTDR) traces of Single-mode–Multimode–Single-mode (SMS) fiber temperature sensors. A theoretical model based on modal interference and temperature-dependent phase shifts is developed, and experimental studies are carried out using an Anritsu MT9083A2 OTDR system. The combined analysis links temperature changes with the dynamics of ghost peaks. The findings demonstrate how pulse width and temperature affect device performance, providing valuable insights for optimizing fiber-optic sensor applications.
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