Since most of structure deals directly with people, there is a strong need for a reliable structural health monitoring system (SHM) that can detect and locate the internal and unseen damages. In this research, 3D composite samples with embedded POFs with different parameters were fabricated. OTDR was connected to the embedded POF to measure the signal attenuation. POF Signal were collected during the preform manufacturing process, VARTM process, after curing and under different bending loads and repeated impact tests. Results showed good response of embedded POF sensor under different loading loads and under repeated impacts.