CAJ | 학술논문

分析了由光纤级联的两个相同的长周期光纤光栅形成的干涉谱.根据设计中的关键技术,利用粒子群优化算法设计了长周期光纤光栅传输损耗为50%的平坦传输损耗谱.将相同的两个优化设计的长周期光纤光栅级联,可以实现一种实用的可调谐多信道隔离滤波器.讨论了级联长周期光纤光栅对之间光纤的偏振特性对干涉谱的影响.
분석료유광섬급련적량개상동적장주기광섬광책형성적간섭보.근거설계중적관건기술,이용입자군우화산법설계료장주기광섬광책전수손모위50%적평탄전수손모보.장상동적량개우화설계적장주기광섬광책급련,가이실현일충실용적가조해다신도격리려파기.토론료급련장주기광섬광책대지간광섬적편진특성대간섭보적영향.
The interference transmission spectrum of cascaded long-period fiber gratings, which is inserted a section of standard fiber, is investigated. Based on the design of key aspects, the particle swarm optimization (PSO) algorithm is used to design a flattened broadband transmission spectrum with transmission loss of nearly 50%. By cascading two such identical long period fiber gratings, a useful tunable multi-channel isolation filter is designed. The influence of polarization of the inserted fiber on the interference spectrum is discussed.