介绍了国际上最新的基于光纤Bragg光栅的光纤滤波技术发展情况,详细阐述了分布反馈式光纤Bragg光栅滤波器、多波长选择光纤Bragg光栅滤波器、应用光纤Bragg光栅的Michelson干涉型（MI）滤波器以及光纤Bragg光栅滤波耦合器的理论难点、基本原理及其应用。The paper introduces the latest technical development of band-pass filters based on fiber Bragg gratings.The major theoretical principle,as well as application of Distributed feed back FBG filters, multewavelength selectieve FBG filters, Michelson interferometer band-pass filters and in-coupler Bragg grating filters are elaborated in details
