OBJECTIVES
OBJECTIVES
. Define Optical Communication
. Present an overview of the history of optical fibers and optical fiber communication
. Compare the advantages and disadvantages of optical fibers over metallic cables
. Define electromagnetic frequency and wavelength spectrum
. Define modes of propagation and index profile.
. Describe the three types of optical fiber configurations: single-mode step index, multimode step index and multimode graded index.
Optical Principles
Optical Principles
. Optical communication systems use light to transmit information from one place to another.
. Light is a type of electromagnetic radiation like radio waves.
. Today, infrared light is being used increasingly as the carrier for information in communication systems.
. The transmission medium is either free space or a light-carrying cable called a fiber-optic cable.
. Because the frequency of light is extremely high, it can accommodate very high rates of data transmission with excellent reliability.