摘要
给出了一种基于布喇格光纤光栅技术进行位移测量的方法.合成光源由宽带光源经不同的布喇格光栅而得到,波长稳定性由温度稳定器进行控制.合成光源的波长要比常规光源的波长长,所以允许的光程差测量范围提高了几百倍.布喇格光纤光栅的波长准确性提高了干涉仪的测量准确性.此外,本文还利用了光外差法马赫-曾德干涉仪精密测量位移变化.
A method of measuring displacement using the technology of fiber Bragg gratings was presented. After a broadband light source passes through separate Bragg grating, the synthesized light source was obtained. The stability of wavelengths was controlled by a temperature stabilizer. The synthesized wavelength is longer than those of conventional light source, so the permitted measured range of path-length was enhanced by several hundred times. The measured accuracy of the interferometer is improved because of the wavelength ax curacy of fiber Bragg gratings. In addition, a M-Z interferometer was used to high precision displacement measurement in the paper.
出处
《光电子技术与信息》
CAS
2004年第6期54-58,共5页
Optoelectronic Technology & Information
关键词
布喇格光纤光栅
位移测量
合成波长
马赫-曾德干涉仪
光外差
fiber Bragg grating
displacement measurement
synthesized wavelength
M-Z interferometer
optical heterodyne
