Dispersive device on polished cladding of a single-mode fiber waveguide

A dispersive component designed for coupling radiation out of a fiber and at the same time to separate the radiation in accordance with the wavelengths was formed on a flat polished surface of a single-mode fiber waveguide by ion-beam etching through a photoresist mask. The use of this device was demonstrated by separating the frequencies in the stimulated Raman scattering spectrum of the waveguide. The coupling-out efficiency reached 55%. A study was made of the dependence of this efficiency on the polarization of the radiation traveling in such a waveguide.