S.W, H., N, T., T.C, T., P, P., & H, A. (2002). -L-Band Ring Erbium Doped Fiber Amplifier with Fiber Bragg Grating. Malaysian Journal of Science, 21(1&2), 115–121. Retrieved from https://juku.um.edu.my/index.php/MJS/article/view/8597