三分量加速度地震检波器中3-dB耦合器设计
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摘要
三分量加速度地震检波器检测加速度的核心部件是由2个3-dB耦合器级联而成的双M-Z干涉仪,3-dB耦合器的设计对三分量加速度地震检波器的检测精度尤为重要。介绍了三分量加速度地震检波器的结构和工作原理,导模之间的同向耦合理论。设置了3-dB耦合器波导的结构和计算参数。采用MATLAB对3-dB耦合器的输出功率进行仿真,仿真结果显示,3-dB耦合器在两输出端实现了能量的平均分配。用波导光学模拟软件OptiBPM v9.0对3-dB耦合器进行模拟仿真,光功率传输图表明,所设计的3-dB耦合器实现了光功率的均分。
The core component of three-component acceleration seismic geophone is the dual M-Z interferometer which is composed of two cascaded 3-dB coupler.The design of 3-dB coupler is particularly important to the detection accuracy of three-component acceleration seismic geophone.The structure and working principle of the three-component acceleration seismic geophone and the theory of co-directional coupling between guided modes are introduced.The structure and calculation parameters of 3-dB coupler waveguide are set.Matlab is used for the simulation of output power of 3-dB coupler.Simulation result shows that it achieves equal energy distribution in the two outputs of 3-dB coupler.Waveguide optics simulation software OptiBPM v9.0 is used to simulate 3-dB coupler.The optical power transmission diagram demonstrates that the 3-dB coupler designed realizes the equalization of optical power.
The core component of three-component acceleration seismic geophone is the dual M-Z interferometer which is composed of two cascaded 3-dB coupler.The design of 3-dB coupler is particularly important to the detection accuracy of three-component acceleration seismic geophone.The structure and working principle of the three-component acceleration seismic geophone and the theory of co-directional coupling between guided modes are introduced.The structure and calculation parameters of 3-dB coupler waveguide are set.Matlab is used for the simulation of output power of 3-dB coupler.Simulation result shows that it achieves equal energy distribution in the two outputs of 3-dB coupler.Waveguide optics simulation software OptiBPM v9.0 is used to simulate 3-dB coupler.The optical power transmission diagram demonstrates that the 3-dB coupler designed realizes the equalization of optical power.
引文
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[2]唐东林.集成加速度地震检波理论与实验研究[D].天津:天津大学,2006:23-52.
[3]恩德,魏建霞,徐可欣,等.高精度硅微简谐振子的设计与制作工艺[J].纳米技术与精密工程,2007,5(2):117-120.
[4]张燕君,陈才和,吴波,等.硅微光机械加速度地震检波器中M-Z光波导干涉仪结构设计[J].光学精密工程,2006,14(1):77-82.
[5]李超.迈克尔逊型全光纤加速度地震检波器理论与实验研究[D].天津:天津大学,2007:11-12.
[6]唐东林,陈才和,崔宇明,等.三分量光弹波导混合集成加速度传感器[J].光子学报,2005,34(7):1062-1065.
[7]吴波,陈才和,张晓玲,等.M-Z干涉型集成光学微加速度传感器结构设计[J].光电子.激光,2004,(10).
[8]唐天同,王兆宏.集成光学[M].北京:科学出版社,2008:25-27.
[9]王侠,欧阳竑,李苏.半导体激光二极管的光纤耦合技术[J].光电技术应用,2010,25(3):26-32.
[10]季家镕.高等光学教程——光学的基本电磁理论[M].北京:科学出版社,2007:150-170.
[11]陈根祥.光纤通信技术基础[M].北京:高等教育出版社,2011:177-184.
[12]刘娟.激光二极管与单模保偏光纤的耦合研究[J].光电技术应用,2010,25(5):46-50.
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