Tunable Fabry–Perot resonator

The structure and parameters of an experimental sample of a tunable Fabry–Perot resonator operating on the principle of the thermo-optical effect are presented for its use as a narrow-band light filter with a tunable bandwidth. The peculiarity of this device is the integration of a heating element and a Fabry – Perot resonator into a single structure. It has been experimentally established that with an increase in the current passing through the control heating element, the resonator structure heats up, leading to a shift in the maximum transmission coefficient to a shorter-wave region of the light spectrum.