有限元人工透射法对权重耦合AOTF的计算  

Finite Element-artificial Transmitting Method for AOTF with Weighted Coupling

作　　者：朱月红[1] 齐海[2] 贾丽萍[3] 

机构地区：[1]石家庄经济学院光电技术研究所,河北石家庄050031 [2]河北科技大学教务处,河北石家庄050018 [3]石家庄经济学院数理学院,河北石家庄050031

出　　处：《河北师范大学学报（自然科学版）》2006年第1期40-42,共3页Journal of Hebei Normal University：Natural Science

基　　金：国家自然科学基金资助项目(10084001)

摘　　要：用有限元人工透射法计算权重耦合的可调谐声光滤波器(AOTF).计算过程中,考虑了2种权重函数:余弦函数和高斯函数;同时给出了AOTF滤波响应特性的数值计算结果.通过比较,可以得出具有高斯权重耦合函数的AOTF的TE-TM模转换滤波响应比具有余弦权重函数的AOTF的TE-TM模转换滤波响应更好.结果与其他文献能很好得吻合,说明该方法能有效地模拟计算AOTF.Finite element-artificial transmitting method is applied for acousto-optic tunable filters （AOTF） with weighted coupling. Here ,two kinds of weighting function are considered：one is Cosine function,the other is Gaussian function; and then the numerical results are shown for AOTF with different weighing function. Through comparison, the optical filter responses of the TE-TM mode conversions of AOTF with Gaussian weighting function are better than AOTF with Cosine weighting function. The results are in good agreement with others,which illustrates that this method is useful in calculation on AOTF.

关 键 词：有限元 人工透射边界 声光可调谐滤波器 权重耦合 模转换 

分 类 号：TN65[电子电信—电路与系统] TN713.92