Raman fiber laser, Bragg fiber grating and method of changing refractive index of germanium silicate glass

摘要

The invention relates to Bragg fibre grating implemented in the form of a portion of the fibre light guide based on SiO2 having at least one impurity dope, inclusive of GeO2, the refraction index of the light guide core having been modulated along its length, whereby the content of GeO2 is within the range from 11 to 39 mole %. IMAGE