Vytvoření simulace optického vysílače pro vnitřní bezvláknové optické sítě založené na optických vláknech

Abstract

The goal of this diploma thesis is to create an optical transmitter which is composed from a bundle of optical fibers for indoor fiber-free optical network, which will have the most even distribution of optical power in space. The main reason for creating this optical transmitter is the creation of a new direction in the field of communication in optical fiber-free networks using optical fiber as a transmitter, because so far transmitters created by single optical fiber only have been designed. Transmitter designed in this thesis allows coverage of larger area and higher transmission speed. The first part of this thesis is devoted to theoretical introduction to optical fiber-free networks, their divisions and communications in them. Afterwards, communication technologies that are used in indoor free space optical network are described, especially the VLC, MIMO and OFDM technologies. In the following sections of thesis optical components that are used in the network for communication are discussed. Discussed are lenses, collimators and optical concentrators. This section is followed by a section where transmitters for optical fiber-free network that have been created till now are described. The main part of this thesis is devoted to creating simulations of the above-mentioned optical transmitter with a different number of optical fibers and the analysis of the distribution of optical power. The final step of this thesis is the description of the real experimental measurements of optical power distribution in a dark room laboratory of the department of Telecommunications.