Single-mode (or mono mode) fiber enjoys lower fiber attenuation than multimode fiber and retains better fidelity of each light pulse, as it exhibits no dispersion caused by multiple modes. Thus, information can be transmitted over longer distances. This document outlines the specifications for a single-mode optical fiber and cable designed for use around the 1310 nm zero-dispersion wavelength, suitable for both the 1310 nm and 1550 nm regions, and compatible with analogue and digital transmission. It details the fiber's geometrical, optical. The single-mode step index fiber has the distinct advantage of low intermodal dispersion (broadening of transmitted light pulses), as only one mode is transmitted, whereas with multimode step index fiber considerable dispersion may occur due to the differing group velocities of the propagating. In fiber-optic communication, a single-mode optical fiber, also known as fundamental- or mono-mode, is an optical fiber designed to carry only a single mode of light - the transverse mode. In single mode fiber (SMF) chromatic dispersion takes place. Vaibhav Purwar, Associate Professor, Department of Electronics & Communication Engineering, Kanpur Institute of Technology, Kanpur, India. Also polar mode dispersion is observed and this dispersion is caused due to dependence of group. Abstract – Single Mode transmission is an important part in Fiber Optics, which is used for long range transmission with attenuation of 0. 4dB between 1310 nm and 1550 nm with a maximum transmission distance of 10km at 10Gigabit.
