Um estudo sobre os receptores ópticos de Kramers-Kronig.

Abstract

Coherent optical communications have been shown to be increasingly necessary across the backbone of the global communications network, so,when considering short-range and mediumrange links, it have been sought alternatives that are economically more viable than traditional coherent receivers. The use of the Kramers-Kronig relations in optical communications pre sents itself as an excellent alternative to minimize the cost of the transceivers, because, given the conditions, it is possible to extract the information of the phase from the detection of the optical signal intensity, allowing the use of coherent schemes from simpler receivers. In this work, both simulations and experimental implementations for optical links using the Kramers-Kronig principle for complex signal reconstruction were analyzed. The first simulations carried out already demonstrated the feasibility of the transmission using these relations. The experimental works analyzed show the transmission of 218 Gb / s in 125 km links and the transmission of 450 Gb /s in 480 km links, both using M-QAM constellations.