PHOTOSENSITIVE FIBRE-OPTIC LIGHT CONDUIT AND PHOTOINDUCED STRUCTURE Russian patent published in 2000 - IPC

FIELD: fibre-optic lasers of various configurations, lasers with pumping in light conduit sheath, cascade lasers and converters on stimulated Raman scattering, spectral filters, dispersion compensators, physical quantity transducers (refractive index, temperature, mechanical stresses), elements for radiation suppression at preset wavelengths, erbium fibre-optic amplifiers of spontaneous luminescence in the region of 1.06 μm, neodymium amplifiers for smoothing of amplification spectrum of erbium fibre-optic amplifiers used, in particular, in band sharing systems. SUBSTANCE: the core of the fibre-optic light conduit contains 0.01 to 5 percent by weight of sulfur atoms. The light conduit is influenced by laser radiation with a wavelength shorter than 240 nm, the laser radiation density does not exceed 100 mJ/sq.cm. EFFECT: enhanced photosensitivity of fibreoptic light conduit, simplified practice of fabrication of photoinduced structures in it. 10 cl, 4 dwg