Analyses and Measurement of Strain and Deflection of Standard Beam Based on Fiber Grating

摘要

Using the sensitivive characteristic of fiber grating, the standard characteristic of the equal-intensity beam has been measured in our experiments. The data are compared with their theoretical values. The results indicate that the measurement of fiber grating is effective and exact for monitoring standard beam. The theoretical value and the experimental value coincided very well. An applied method to measure Young's modulus of material is proposed.