SINGLE-MODE OPTICAL WAVEGUIDE FIBER Russian patent published in 2000 - IPC

FIELD: high- speed data transmission communication equipment, which has single channel or uses wavelength compression and may comprise optical amplifiers. SUBSTANCE: fiber core has two or three regions, in which refraction index may change. Relative sizes of regions also may change. Specific choice of these parameters provides given mode field diameter, zero dispersion wavelength, dispersion steepness, and unloaded wavelength. Choice of optical characteristics provides clipping of non-linear distortion at low attenuation and tolerant characteristics with respect to bending. In addition device has low residual tension in waveguide and provides double coating system, which has adjusted coefficients of elasticity and glass transition. EFFECT: decreased non-linear effects, decreased polarization mode dispersion. 13 cl, 7 dwg, 2 tbl