Apoidzed 선형처프된 광섬유 grating의 분산보상특성에 대한 연구

Characteristics of dispersion compensation for apodized linearly-chirped optical fiber gratings

A linearly-chirped fiber grating for the dispersion compensation over 520km of 1.3.mu.m single mode fiber is designed. The compensation characteristics of the gratings apodized each with Gaussian and hyperbolic tangent function are studied. the ripples in reflection and delay curves are coniderably reduced for both cases, but the reflection bandwidth for the hyperbolic tangent apodization is much less shrinked than that of the Gaussian apodization.