This fiber optic sensor uses a GaAs crystal at the sensor tip for real-time measurements. It is designed for precise, durable, and adaptable temperature monitoring measurements even in the most challenging conditions. Their fully non-metallic, dielectric design ensures complete immunity to. Fiber optic temperature sensors are advanced IoT devices that utilize optical fibers, which are thin strands of glass or plastic. Up to now, MEISU has developed various high-temperature resistant optical devices not only with regular SM fiber, but also.