Підходи до створення оптичних температурних сенсорів на основі структури Брега для біомедичних досліджень

The proposed structural implementation of an optoelectronic device for determining tissue microcirculation and body temperature allows miniaturizing a fiber sensor, providing monitoring, diagnostics and screening of the state of tissue microcirculation in various optical modes with high accuracy and reliability, ensuring portability, mobility, access to hard-to-reach areas of biological tissue. Adaptive conditions for diagnosing the state of microcirculation are provided by the amplitude-pulse mode of operation of a laser source of optical radiation based on a seven-layer heterostructure, which allows combining radiation of different wavelengths and changing the intensity of light. Flows, which in its case allows studying different types of biological tissues using a set of radiation modes, as well as providing physiotherapeutic effects. Local temperature control using a fiber optic channel with a formed Bragg grating in the studied area allows you to obtain more complete and complex information about the level of tissue microcirculation and the state of biological tissue without increasing the size of the sensitive part of the optical sensor. The possibility of using optical transducers based on Bragg fiber gratings as optical sensors for measuring temperature in different parts of the human body has been demonstrated. The possibility of using optical transducers based on Bragg fiber gratings as sensors embedded in composite materials for measuring and monitoring temperature fields has been demonstrated.