We have proposed a new kind of ultra-narrow dual-bandpass fiber Bragg gratings. Based on the proposed grating, an ultra-narrow dual-channel filter is designed. Our filter has the same bandwidth and the even strength, as well as the ultra-narrow bandwidth as small as ≪1 pm.
Xueming LiuLeiran WangGong Yong-KangTao WangKeqing LuTong‐Yi ZhangWei Zhao
Ying WangLianhe LiWenjie NieQiang LingHaiyun ChenZhengtian GuZhangwei YuBarèrèm-Mêlgueba MaoDaru Chen
Xueming LiuAoxiang LinGuoyong SunByeong Ha LeeYoungjoo Chung