Abubaker, S. A. “A Comparison of Top Distributed Bragg Reflector for 1300 Nm Vertical Cavity Semiconductor Optical Amplifiers Based on III–V Compound”. ARO-THE SCIENTIFIC JOURNAL OF KOYA UNIVERSITY, Vol. 9, no. 2, Oct. 2021, pp. 26-29, doi:10.14500/aro.10846.