Peculiarities of light distribution on optical fibre with system of Bragg's gratings

Summary form only given. Distribution of light in a single mode fibre with some Bragg's lattices of the same period was analysed by the method of connected waves. With the help of four Bragg's lattices which make up two Fabry-Perot coordinated interferometers an optical fibre spectrometer can be constructed. The scanning process based on a spectral range can be achieved by changing the temperature of fibre. Based on four lattices, which form two Fabry-Perot interferometers operated in real time one can create continual laser radiation in sequenced powerful impulses.