Intermodal and intramodal dispersion

There are two different types of dispersion in optical fibers. The types are intramodal and intermodal dispersion. Intramodal , or chromatic, dispersion occurs in all types of fibers. Intermodal , or modal, dispersion occurs only in multimode fibers.

Each type of dispersion mechanism leads to pulse spreading.

Hence light will exit at different time for each colour hence causing dispersion.

Two distinct types of intramodal dispersion are: chromatic .

Explain the intermodal and intramodal dispersion. What are draw back of dispersion. Compare dispersion shifted and dispersion flattened fiber. Therefore, the intermodal dispersion occurs.

Because the different modes follow different paths through the fiber, a light pulse is broadened in proportion to the length of the fiber. Intra-modal dispersion : The term “ Intra-modal” consists of two terms “intra” and “modal”. The chromatic dispersion is the sum of material- and waveguide dispersion. Here, we will discuss what they mean and what they represent in day to day shipping and freight environment.

Thus, pulse spreading in multimode fibers is largely due to material dispersion and intermodal delay distortion. It occurs in multimode fibers, for example. The two fundamental pulse-broadening mechanisms in an optical fiber are intermodal dispersion caused by different mode velocities and intramodal dispersion due to the finite spectral bandwidth of the light source. In an optical fiber we find two types of dispersions. Intra-modal or Chromatic dispersion (present in single mode an multimode optical fiber).

This dispersion is due to finite bandwidth of the signal. Material dispersion: This is due to intrinsic properties of the material, . Dispersion Loss As an optical signal travels along the fiber, it becomes increasingly distorted. In this video, I will explain what is Chromatic Dispersion. This video explains the causes and effects of dispersion in optical fibers and the different types of dispersion along with some of the solutions proposed to.

If we use this parameter then the intramodal (material) and intermodal dispersion can be easily added.