RESUMO
A record 730 nm parametric conversion in silica fiber from the near-infrared to the short-wave infrared band is reported and analyzed. A parametric gain in excess of 30 dB was measured for a signal at 1300 nm (with corresponding idler at 2030 nm). This conversion was performed in a travelling single-pass one-pump parametric architecture and high efficiency is achieved by a combination of high peak power and a nonlinear fiber with a reduced fourth-order dispersion coefficient.
Assuntos
Amplificadores Eletrônicos , Desenho Assistido por Computador , Tecnologia de Fibra Óptica/instrumentação , Iluminação/instrumentação , Modelos Teóricos , Oscilometria/instrumentação , Dióxido de Silício/química , Simulação por Computador , Desenho de Equipamento , Análise de Falha de Equipamento , Raios Infravermelhos , Óptica e Fotônica/instrumentaçãoRESUMO
An optical processing system for the recognition and sorting of machine screws is presented. A theoretical analysis of the diffraction problem is detailed which provides a basis for selecting a set of features used in the sorting algorithm. These features are used to discriminate between screws based on their diameter and thread pitch.
