Lançamento de luz em fibras opticas multimodo e sua influencia nas caracteristicas de dispersão

AUTOR(ES)
DATA DE PUBLICAÇÃO

1984

RESUMO

We have studied configurations that increase the semiconductor laser light coupling efficiency into multimode fibers. We have tested lenses and a fiber termination named "Roof Top" (RT), obtained by a polishing technique. Although the efficiency values are greater than that obtained by the butt-coupling, one observes that the alignment tolerances become more critical. When coupled to a long fiber (~1 km) , the RT-ended fiber, correctly aligned with the laser stripe, has a strong selective mode excitation, reducing, by a factor of 2, the width of the exit pulse from the long fiber, that is, its total dispersion

ASSUNTO(S)

semicondutores - propriedades oticas fibras oticas lasers semicondutores

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