Abstract: The theory, method and procedure for measurement of the bending loss of single-model quartz fiber by using fiber Bragg grating sensor are introduced. It＇s a designing experiment on optical signal loss due to the bending in the fiber, and can not only enrich the experimental teaching contents, but also enlarge student＇s vision, improve students＇ innovative abilities.

Key words: designing experiment, fiber Bragg grating sensor, bending loss