论文部分内容阅读
本文分析了一种采用光波长编码方式工作的机载光纤位移传感器工作原理,针对其中的变栅距光栅的栅距变化规律进行了理论研究,介绍了栅距变化按等差级数、等比级数和幂级数逼近规律变化等四种情况;证明栅距变化规律为等比级数时,位移与一级衍射光中心波长呈简单的线性关系,是理想的栅距变化规律;最后探讨了各种栅距变化规律下由光波长推算位移的方法。
In this paper, the principle of on-board optical fiber displacement sensor working with optical wavelength coding is analyzed. The variation of the pitch of the variable grating is studied theoretically. Order and power series approaching the law of changes in four cases; to prove that the law of variation of the grid spacing is proportional to the number of orders of displacement and the first-order diffracted light center wavelength was a simple linear relationship is the ideal law of variation of the pitch; the final discussion A variety of grating distance under the law of the wavelength of light to calculate the displacement of the method.