【摘要】 本文阐述应力型保偏光纤应力测量的原理和方法，即所谓光测弹性ＣＴ技术。简单介绍基于光测弹性ＣＴ技术研制成的应力自动测量装置，以及用这种装置对一种Ｂｏｗ—Ｔｉｅ保偏光纤的测量结果。更多还原

【Abstract】 As the developing of riber technologies,polarization-maintaining fibers (PM fibers)are widely applicated not only in coherent optical communication systems but also in fiber sensors or integrated optical processing.The stress profile that is a key parameter characterizing the polarization-preseving ability of PM fibers is needed to be measured. In this paper, a method,which is called photoelastic computed tomography, for measuring the axial residual stress profile of PM fibers is introduced. The measuring principle of the phase difference due to the stress of PM fibers is analyzed in detail. The automatical measuring equipment based on the photoelastic computed tomography has been describbed. It shows us how to get fiber orientation,data collection and stress profile reconstruction under the control of a computer. Here, photodiode array is used as photodetector. In addition,a BowTie PM fiber is measured and the results are given.更多还原