Fibre optic biosensors have the advantages of high sensitivity, resistance, rapid detection, high sensitivity, and real-time monitoring and are unaffected by EM interference. These qualities help fibre optic biosensors work well; because they can concurrently and discretely direct light of. Optical fiber sensors (OFSs) have emerged as essential tools in the monitoring of physical, chemical, and bio-medical parameters in harsh situations due to their high sensitivity, electromagnetic interference (EMI) immunity, and long-term stability. Optical fiber structure & characteristics At the heart of this technology is.