双芯光子晶体光纤横向压力特性分析  

Analysis of transverse pressure characteristics of dual core photonic crystal fiber

作　　者：马小翠 钱诗婷 柳淘 张克非[2] MA Xiaocui;QIAN Shiting;LIU Tao;ZHANG Kefei(School of Science,Southwest University of Science and Technology,Mianyang Sichuan 621010,China;School of Computer Science and Technology,Southwest University of Science and Technology,Mianyang Sichuan 621010,China)

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：《光通信技术》2020年第8期18-21,共4页Optical Communication Technology

基　　金：国家级大学生创新创业训练项目(201910619021)资助;四川省科技计划项目(2018GZ0212)资助。

摘　　要：传统光纤式压力传感装置由于结构及材料的限制,其灵敏度难以进一步提升。基于马赫-曾德尔干涉传感原理,设计一种掺杂型双芯光子晶体光纤(DC-PCF)横向压力传感结构。根据不同掺杂材料和光纤截面结构参数对压敏特性的影响,分析压力灵敏度与光纤结构关系,综合模场面积,获得高压力灵敏度DC-PCF结构。仿真结果表明:当入射传输波长为1550 nm、双芯光子晶体长度为6 cm时,横向压力下X偏振压力灵敏度可达37.56 nm/MPa,Y偏振压力灵敏度可达35.27 nm/MPa。相对传统光子晶体横向压力传感器,该传感结构的压力灵敏度提高了近60倍。Due to the limitation of structure and material,the sensitivity of traditional optical fiber pressure sensor is difficult to be further improved.Based on the principle of Mach Zehnder interferometer,transverse pressure sensing structure of doped dual core photonic crystal fiber(DC-PCF)is designed.The relationship between pressure sensitivity and fiber structure is analyzed according to the influence of different doping materials and cross-section structure parameters of optical fiber on the pressure-sensitive characteristics,the DC-PCF structure with high pressure sensitivity is obtained by synthesizing the mode field area.The simulation results show that when the incident transmission wavelength is 1550 nm and the length of the dual core photonic crystal is 6 cm,the X polarization pressure sensitivity can reach 37.56 nm/MPa and the Y polarization pressure sensitivity can reach 35.27 nm/MPa.Compared with the traditional photonic crystal transverse pressure sensor,the pressure sensitivity of the sensor structure is increased by nearly 60 times.

关 键 词：双芯光子晶体光纤 横向应力 聚甲基丙烯酸甲酯 有效折射率差 

分 类 号：TN253[电子电信—物理电子学]