光子晶体光栅反射谱的计算  

Simulation Optimization of Photonic Crystal Grating Reflection Spectrum

作　　者：刘津瑜 龙思颖 杨梦茜 徐涛 张克非[2] Liu Jinyu;Long Siying;Yang Mengxi;Xu Tao;Zhang Kefei(School of Science,Southwest University of Science and Technology,Mianyang Sichuan,621010;School of Computer Science and Technology,Southwest University of Science and Technology,Mianyang Sichuan,621010)

机构地区：[1]西南科技大学理学院,四川绵阳621010 [2]西南科技大学计算机科学与技术学院,四川绵阳621010

出　　处：《电子测试》2020年第11期46-50,39,共6页Electronic Test

基　　金：四川省大学生创新训练计划资助项目(S201910619094);四川省高等教育人才培养质量和教学改革项目(19sjjg21);西南科技大学校级重点教教学改革与研究项目(19xnzd21)。

摘　　要：基于布拉格光纤光栅多元参数对反射光谱作用进行预估分析,能够更好地了解光纤光栅特性。利用耦合模理论推导适用于光子晶体光栅的反射谱计算公式,结合传输矩阵法研究光子晶体光栅周期、光栅长度等相关光栅参数对反射谱的作用关系,并以真实光栅反射谱数据验证作用关系的正确性。在建立光栅多参数与光栅反射谱作用规律的基础上,利用其反射率与透射率,设计理论光子晶体光栅反射谱预测模型。测试证明:改变光栅周期只会影响中心波长的取值范围;改变光栅长度,图像大致保持一致,且当光栅长度为4.85mm时,达到最优,可以提高光纤光栅特性预测的准确性,降低程序漏洞。Predictive analysis of the reflection spectrum based on the multi-paraQ``meter parameters of Bragg fiber grating can better understand the characteristics of fiber grating.Using the coupled mode theory to derive the reflection spectrum calculation formula suitable for photonic crystal grating,combined with the transfer matrix method to study the relationship between the grating parameters such as photonic crystal grating period and grating length and the reflection spectrum,and verify the relationship with real grating reflection spectrum data.Correctness.Based on the law of grating multi-parameter and grating reflection spectrum,the theoretical photonic crystal grating reflection spectrum prediction model is designed by using its reflectivity and transmittance.Tests prove that changing the grating period only affects the value range of the center wavelength;changing the length of the grating,the image is almost consistent,and when the grating length is 4.85mm,it is optimal,which can improve the accuracy of fiber grating characteristic prediction and reduce the program Vulnerabilities.

关 键 词：光子晶体光纤 反射谱 反射率 切趾函数 

分 类 号：TN253[电子电信—物理电子学]