The use of photonic technology in optical wireless links

Abstract

The paper deals with terrestrial optical wireless links operating with coherent laser beams. The contribution discusses the full photonic transceiver concept (transmitter and receiver). Two main types of optical wireless links are mentioned: test link and data link. The purely photonic concept of the links with its advantages over the conventional concept is presented and discussed. The modeling of the full photonic receiver using matrix optics is shown.

Fully Photonic Wireless Link for Transmission of Synchronization Signals

“…The purpose of the Fully Photonic Transmitter (FPT) is to create a transmitted optical beam by an optical fiber irradiating the transmitting lens (achromatic doublet lens). If the multimode fiber (plastic or glass) is used as a final fiber, the optical intensity distribution in the transmitted beam will generate a so-called "top-hat" beam [5], which is more resistant to the negative effects of atmospheric turbulence in comparison with the standard Gaussian beam.…”

“…A drawback of the fully photonic approach is difficulties in alignment of used optical elements [5].…”