Distributed Temperature Sensing (DTS) systems provide temperature information for accurate thermal monitoring, fire detection, and condition assessment by utilizing standard fiber optic cables. These fiber optic systems precisely measure the temperature profile of an asset by interpreting the. This article explores the structure, working principles, advantages, and disadvantages of Fiber Optic Temperature Sensors. Temperature measurement can be achieved through various methods, including: However, these traditional systems often suffer from limited immunity to electromagnetic. These sensors utilize light transmission properties through optical fibers to detect temperature variations, making them highly suitable for harsh environments where conventional electronic sensors may fail. This article delves into the working principles, types, advantages, applications, and. Fiber optic temperature sensors are immune to the many environmental effects that compromise other measurement technologies, can be embedded and installed in locations traditional temperature sensors cannot and deliver an unprecedented level of spatial detail and data without sacrificing precision. Abstract—Distributed temperature sensors (DTS) measure tem-peratures by means of optical fibers.