The Internet of Things (IoT) depends on the accurate real-time monitoring of complex industrial processes by integrating tiny sensors into machinery and equipment. According to various research investigations, conventional sensors including piezoelectric sensors and thermocouples can be easily implanted throughout the production process and used if the monitoring criteria are satisfied. This is not always the case, though, and in certain situations a specific sensor is needed. By the integration of optical fiber sensors and the discussion of a few applications, this study explores the roles, opportunities, and challenges of optical fiber sensors in Internet of Things adding specific properties like sensitivity and zero drift of sensor data.