Numerical study of macro bending effect on high concentration EDFA

This paper demonstrates the numerical model of an EDFA with macro-bending. The bending diameter and erbium doped fiber (EDF) length for single-pass macro-bent Erbium-Doped Fiber Amplifiers (EDFA) are theoretically analyzed by solving differential equations. Numerical results show gain flattened in C-band region compare to un-spooled high concentration EDFA.