Sensores a fibra com rede de período longo e tapers revestidos com óxido de grafeno aplicados na medição de CO2

Abstract

The optical fibers in general are gaining more visibility and that happens because through the material they are made of, SiO2, is possible to transmit information using the light, without the electromagnetic interference. Nowadays, several applications in the medicine area, internet services, TV and telephony (telecommunications systems), automotive systems, submarines cables use fiber optics. Because of that, in the last years the scientific interesting in improve their performance are increasing, with the study of the fiber’s coating a option to achieve this goal. In this paper will be discussed the fiber coating with the graphene oxide to develop sensors. The graphene is a material composed by one single carbon layer arranged in hexagonal grid that can be obtained by graphite. This material is stable to environment temperature, light, thin, rigid, waterproof and its conductivity can be control dynamic changing the polarization tension applied. When combined with oxygen groups, we have the graphene oxide. In this research was developed a sensing system of graphene oxide measurement, based in (OLIVEIRA, 2019), using a LPG (Long Period Gratting) with tapering aplication and graphene oxide coating to improve the sensor sensibility to external variations. The main goal is analyse the improvements provided by graphene oxide in the fiber optical sensors. The software used for the simulations and analysis will be described throughout this paper