CAJ | 학술논문

在环形激光器的理论基础上,结合环形掺铒光纤激光器自混合散斑速度传感实验系统,数值模拟了激光器自混合散斑信号的功率输出.分析了自混合散斑信号的平均散斑频率,频谱能量密度性能.研究结果表明,频谱平均频率与物体速度成近似的线性关系,频谱能量密度与探测距离成近似线性关系.
재배형격광기적이론기출상,결합배형참이광섬격광기자혼합산반속도전감실험계통,수치모의료격광기자혼합산반신호적공솔수출.분석료자혼합산반신호적평균산반빈솔,빈보능량밀도성능.연구결과표명,빈보평균빈솔여물체속도성근사적선성관계,빈보능량밀도여탐측거리성근사선성관계.
Based on the theory of the fiber ring laser,self-mixing speckle generated in an erbium-doped fiber laser is theoretically studied and numerically simulated.The self-mixing speckle signals produced by simulation representing different velocities are analyzed by fast Fourier transform (FFT),and the result shows that the mean speckle frequency and spectrum energy density of the self-mixing signal are respectively linear related with the velocity and the detecting distance of the dynamic object.The results indicate that self-mixing speckle in an erbium-doped optical fiber laser can be used to the measurement of a dynamic object.