Texts, reports and contributions related with the relevant field of optical communications and electro-optics.
Optical modulators use electrical signals to modify the physical characteristics of materials in such a way that the propagation conditions of light change. This article explains the most common optical modulators that are widely employed in optical communications. Firstly, Electro-Absorption Modulators are briefly describred. Secondly, electro-optic Mach-Zehnder Modulators (MZM) are introduced. Finally, the most relevant […]
The term laser is used as a noun, but it was originally an acronym for “light amplification by stimulated emission of radiation”. A laser is a fundamental part in any optical transmitter, as it is the generator of the optical carrier. In optical communications, the spectral location of a carrier is often stated in wavelengths […]
This section provides a basic classification of optical networks. The overall network is a complicated system that ensures robust optical communications between exchange information nodes. This high-level system can be divided into typical subnetworks that meet specific geographical and functional requirements: the core network, Metropolitan Area Networks (MAN), access networks and Local Area Networks (LAN). […]
This article shows the relevance of optical communications emphasizing how the introduction of optical devices marked an inflexion point in the performance of guided data links. The development of electro-optical technology allowed to increase simultaneously the distance and capactiy of communications systems. In practice, optical communications have enabled the ever-increasing worldwide data traffic. The table […]
Communication is an essential element in our social, cultural and technical evolution. Especially over recent decades, human habits and technology have influenced each other, but always relying on a growing exchange of information. Optical communications have enabled this development and have become the only mature technology that can satisfy the demand of capacity in wired […]