The use of optical fiber sensors is subject to extreme external influences in the form of vibration, shock and temperature. The fiber-optic sensor provides temporal and parametric stability of measurements, which are the choice of this type. The requirement was minimal power consumption, high accuracy and stability of measurement, integration of several measurements into one sensor. The ability to measure multiple parameters at the same time is a very important quality indicator. This is due to the possibility of reducing the number of sensors, which reduces the mass parameters of temperature sensors. The modular composition of the sensor makes it possible to abandon optical analyzers and carry out further processing based on standard interfaces, which is very beneficial. The limitation of the proposed methods and designs is the need for microelectromechanical structures that measure certain physical quantities.