The sensors used in medicine are mostly electronic sensors, which are not suitable for many medical procedures, especially in hyperthermicity treatment at high microwave (radiation) frequencies, ultrasound fields or laser radiation. Because the metal conductor in the electronic sensor is easily disturbed by the electromagnetic field such as current and voltage, it causes the thermal effect around the sensor head or the tumor, which can lead to false readings. In recent years, the use of high-frequency current, microwave radiation and laser heat therapy to replace surgery has attracted more and more attention from the medical community, and the small size of the sensor is very important in medical applications, because the small size is less harmful to human tissue. Optical fiber temperature sensors are the smallest temperature sensors that can be achieved so far. It can measure the internal temperature of human tissue with minimal invasion and accurate local information. So far, the fiber grating sensing system has successfully detected the temperature of the diseased tissue, which provides useful information for studying the diseased tissue.

Fiber optic temperature sensors can also be used to measure the efficiency of the heart. In this method, doctors insert a thermal dilution catheter embedded with fiber grating into the right atrium of the patient's heart. The temperature of the pulmonary artery blood can be measured, and the blood output of the heart can be known in combination with the pulse power, which is very important for cardiac monitoring.

Agent's FISO brand FOT-M is a fiber optic temperature sensor designed for medical applications. It combines all the excellent characteristics you expect from an ideal sensor body. Its compact structure, free from microwave and radio frequency interference, corrosion resistance, high precision and reliability make FOT-M the best choice for temperature measurement in extreme environments.

The main features of FISO FOT-M fiber optic temperature sensors are complete immunity to EMI and RFI, built-in safety equipment for medical applications, and high accuracy. For demanding applications in the medical industry, such as MRI applications, FOT-M temperature sensors can provide higher fidelity temperature measurements.

Since the FOT-M temperature sensor is designed to measure temperature under any EMI, humidity and vibration conditions, the product system can still reliably measure temperature even in the most adverse environment. For the above-mentioned extreme environments, manufacturers can provide various types of lead cables. Based on fiber optic technology, the sensor is inherently immune to EMI and RFI. The fiber optic sensor is electronically inactive, so it does not emit or be affected by any type of EM radiation, whether microwave, RF or NMR. FOT-M fiber optic temperature sensor is based on the recognized Fabry-Perot with the following parameters:

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