基于长周期光纤光栅的增益平坦滤波器的研制

Study on Fabrication of Gain Flatness Filter Based on Long Period Fiber Grating

文中主要介绍了用长周期光纤光栅(LPFG)制作增益平坦滤波器(GFF)时要注意的一些技术性问题,其中包括光敏光纤的选择、光纤模式的选择、写光栅的曝光强度、波长漂移量的预留。

Long period fiber grating (LPFG)is a type of ideal band exclusion filter,which could be applied to flat the gain profile of Erbium doped fiber amplifier(EDFA).We discuss technically critical issues in the paper in gain flatness filter (GFF) process,including selection of photosensitive fibers,fiber modes,exposure intensity used to writing fiber grating and reservation consideration of wavelength shift.