摘要
快速有效地获得级联、超结构、倾斜光纤光栅等大计算量光栅类型的光谱特性,是优化设计基于上述光栅建立的各种光器件的重要基础和前提保障。从有效折射率法(EIM)出发,验证了用于光纤光栅理论分析的新型方法——V-I传输矩阵法的正确性。选择相同参量进行分析,结果表明,V-I传输矩阵法和经典传输矩阵法模拟分析的结果基本一致,且与实验结果的误差满足精度要求。该方法简化了传输矩阵,大大提高了计算效率,如果将光栅分割成N层进行分析,则可节约N个矩阵的运算时间,N越大,分析精度越高,本方法快速计算的优势也越明显。
To calculate the spectrum of complex structure fiber gratings quickly and effectively is the main basis for analyzing and optimizing the performance of some optical devices,which are composed by superstructure fiber grating,tilted gratings,etc. V-I transter matrix method is proved by the effective index method （EIM） firstly in this paper. The validity of V-I transfer matrix method is analyzed by numerical simulations and experimental results. Compared to the traditional transfer matrix method （TMM）,V-I transfer matrix method could greatly improve the efficiency and save the time of calculating N matrixes for analyzing period chirp fiber Bragg gratings （FBG）. With the improvement of the precision,the advantage of V-I transfer matrix method will be more apparent.
出处
《光学学报》
EI
CAS
CSCD
北大核心
2009年第12期3267-3271,共5页
Acta Optica Sinica
基金
国家自然科学基金(60771008,60837002)
北京市自然科学基金(4082024)
留学回国人员基金
新世纪优秀人才支持计划(NCET-05-0091)资助课题
关键词
光栅
传输矩阵
有效折射率法
V—I传输矩阵法
gratings
transfer matrix
effective index method
V-I transfer matrix method
