东南大学学报（英文版）2009，Vol.25Issue(1)：23-25,3.
任意变迹的窄带宽光纤布拉格光栅的制备
Fabrication of arbitrarily apodized fiber Bragg gratings with narrow bandwidth
摘要
Abstract
A double-exposure fabrication method without any intensity shadow mask to fabricate arbitrarily apodized fiber Bragg gratings(FBGs)with narrow bandwidth is demonstrated by controlling the total ultra violet(UV)irradiation along the graung by varymg the speed of a translation stage.The UV source used is a stable continuous intracavity frequency-doubled argon-ion laser.The parameters(such as length,apodization profle,average index change)of FBGs Can be easily changed with this method.The total UV irradiation is kept constant in the double-exposure process because of the precise control of the exposure time,which ensures that the apodized FBG'S bandwidth can be extremely narrow.Thhe full width at half maximum(FWHM)bandwidth of the 2-cm.long apodized FBG fabricated by this method is 0.15 nm with a maxilnuln reflectivity of more than 95%.关键词
光纤布拉格光栅/变迹/2次曝光Key words
fiber Bragg grating/apodization/double exposure分类
信息技术与安全科学引用本文复制引用
吕昌贵,恽斌峰,崔一平..任意变迹的窄带宽光纤布拉格光栅的制备[J].东南大学学报（英文版）,2009,25(1):23-25,3.基金项目
The Natural Science Foundation of Jiangsu Province(No.BK2004207). （No.BK2004207）
