摘要
为解决传统VISAR在速度快速变化时容易丢失干涉条纹和系统结构复杂造成的实际应用成本压力等问题,使激光干涉测速技术在实际环境下更加简便易用,针对AFVISAR系统进行仿真分析,并结合实验平台进行相关优化改进,提出了一种基于1 550 nm波长单模光纤的双耦合改进型AFVISAR系统,该系统测量值与实际值其回归拟合关系系数R2值趋近1,其测速误差范围控制在1%以内.理论分析与实验结果均表明,改进型AFVISAR系统具有功耗小、插入损耗小、成本低、易于与其他光纤器件耦合或集成和易于计算机数据化修正处理等特点.
In order to make the laser interferometer can be used more conveniently in practical environment due to the problems of the loss of interference fringes when the velocity changes quickly in VISAR system and the high cost of the complex structure of the system,AFVISAR system is simulated and analyzed,combining with the optimized improvement of the experimental platform,the dual-coupling improved AFVISAR system based on sin gle-mode fiber in the wavelength of 1 550 nm is proposed.The coefficient R2 of the regression relationship be tween the measured value and the real one is close to 1 and the error of measured velocity is limited less than 1%.The theoretical analysis and the experimental results show that the improved system is characterized by small pow er,low insertion loss and low cost and it can be easily coupled by other optical fiber devices and be modified by the datumization of computers.
出处
《光电技术应用》
2012年第1期1-4,共4页
Electro-Optic Technology Application
基金
国家大学生创新性实验项目(C1025316)
广东省大学生创新性实验项目(C1019916)
华南师范大学大学生创新性实验项目(52400416)
