FEATURES OF INSTALLATION AND RELIABILITY OF NEW TYPES OPTICAL FIBRES

Abstract

The paper discusses the requirements for the reliability of fiber-optic communication lines using transfer technology with wavelength division multiplexing. It is shown that the use of such technology makes high demands on the reliability of the optical fiber included in an optical cable. The reason is the significant increase of line capacity and consequently loss of information in case of emergencies. The calculation results, which confirm the lifetime of the optical fiber from the tension after installation are shown. Recommendations in accordance with that offered by laying fiber optic cable to use the method of blowing cable in polyethylene pipe are given. This will to reduce the load on the cable during installation and to avoid a large load on the fiber. A study of the dependence of the optical fibre lifetime on the bend is produced. A method for calculating the elongation of the optical fibre depending on the bending radius is proposed. Recommendations on the bending radius choice of the fibre in the design of optical networks to increase their reliability are given.