Abstract
This work aims to discuss a study of numerical simulations of the performance of arrayed waveguide grating (AWG) and fiber Bragg grating (FBG) demultiplexers in a fiber optical network in a special class of fiber denominated fiber of photonic crystal (PCF) considering the dispersive and non-linear effects. The proposed method is based on numerical simulations in a wavelength division multiplexing (WDM) network configuration in PCF. For the simulation and analysis, the commercial OptiGrating software was used, a versatile numerical tool used to model integrated devices that incorporate FBG and OptiSystem software to simulate fiber propagation with non-linear and dispersive characteristics. The analysis of the performance of the systems was done through a comparison between the values obtained in terms of Bit Error Rate (BER) and Quality Factor (Q Factor) in a dense WDM system with spacing between 50 GHz channels, and 12 Gbit/s transmission rate. The results show that the FBG demultiplexer in terms of the BER and the Q factor for the PCF was the one that obtained the best performance, when compared the FBG demultiplexer with SMF and the AWG demultiplexer obtained excellent results for both fibers.
Highlights
RESUMO Este trabalho tem como objetivo discutir um estudo de simulações numéricas do desempenho de demultiplexadores grades de guias de onda (AWG) e de fibra com grade de Bragg (FBG) em uma rede de fibra óptica em uma classe especial de fibra denominada fibra de cristal fotônico (PCF) considerando as características dispersivas e os efeitos não lineares
The wavelength division multiplexing (WDM) system presents classifications that take into account the frequency spacing of the channels, which is found in the 50-100 GHz spacing is known as Dense Wavelength Division Multiplexing (DWDM), which was used in this work, and has the purpose of transmitting multi wavelengths in very low frequency spacing in the fiber (DONG et al, 2012; YADAV et al, 2015)
It is observed that the channels suffered an attenuation of – 14 dBm and the production of approximately 14 lateral bands, known as FWM products, with powers ranging from – 65 to – 75 dBm generated from the signal propagated in the Single Mode Fiber (SMF) fiber and around 16 lateral bands, with powers ranging from – 57 to – 67 dBm for Highly Nonlinear Photonic Crystal Fiber (HNL-PCF) (KEISER, 2008; DE SOUSA et al, 2019; DE SOUSA et al, 2020; SABINO et al, 2017)
Summary
RESUMO Este trabalho tem como objetivo discutir um estudo de simulações numéricas do desempenho de demultiplexadores grades de guias de onda (AWG) e de fibra com grade de Bragg (FBG) em uma rede de fibra óptica em uma classe especial de fibra denominada fibra de cristal fotônico (PCF) considerando as características dispersivas e os efeitos não lineares. The WDM system presents classifications that take into account the frequency spacing of the channels, which is found in the 50-100 GHz spacing is known as Dense Wavelength Division Multiplexing (DWDM), which was used in this work, and has the purpose of transmitting multi wavelengths in very low frequency spacing in the fiber (DONG et al, 2012; YADAV et al, 2015) These optimizations of WDM demultiplexers have been widely studied, as in who performed an analysis of the performance of AWG demultiplexers and a demultiplexer based on FBGs on a passive WDM, dense, ultra-dense optical network with a transmission rate of 10 Gbit/s. This work aims to discuss a study of numerical simulations using the Optisystem and Optigrating software for the performance of AWG and FBG demultiplexers on a fully optical link in a Standard Single Mode Fiber (SMF) and a PCF considering the dispersive and nonlinear effects.
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