While offering unique advantages like immunity to electromagnetic interference and compact size, fiber optic sensors also present several notable disadvantages, including high cost, complexity, fragility, and susceptibility to various forms of noise, crosstalk, and environmental. While offering unique advantages like immunity to electromagnetic interference and compact size, fiber optic sensors also present several notable disadvantages, including high cost, complexity, fragility, and susceptibility to various forms of noise, crosstalk, and environmental. Following are the drawbacks of using Fiber Optic Sensors: High Cost: They are very expensive. Complex Detection Systems: Detection systems can be complex. Requires Training: Users may be unfamiliar with the technology, requiring basic training before use. When considering the use of optical amplifiers in a telecommunication system, it is important to weigh these advantages and disadvantages carefully to. The disadvantages of fiber optic sensor s include the following. It needs exact installation procedures/methods. For example, they tend to be more expensive than other types of sensors, especially for large-scale or mass-produced applications. Additionally, fiber optic sensors are fragile and. Radiation absorption excites an orbital electron to a higher energy level. Heating the material enables the trapped states to interact with phonons and decay into lower-energy.