RECOMMENDATIONS ON THE URBAN NETWORK FOTL STRUCTURE WITH THE LOWEST POSSIBLE LEVEL OF DISTORTION OF INFORMATION AND CONTROL ILCF-SIGNALS

Abstract

The article studies the problem of construction of subscriber branched networks xPON/MAN/RoF, on the base of fiber-optic transmission lines, with the possibility of non-relational control. Namely, enabling transmission of control information as a part of subscriber signal. It is proposed to use instantaneous wavelength change function of the optical signal (ILCF)as the control information with parametric characteristics. A method of modeling such segments was offerred, nature of ILCF was analyzed, and recommendations on inclusion of EDFA light guides and methods of pumping to them from the point of view of maintaining positive chirp for the information-control ILCF signal were made. It was assumed that ensuring positive chirp will minimize distortion of the latter during its transmission. It is concluded that branching has significant effect on ILCF. Recommended parameters of segments for different degrees of their branching are also obtained as well.