"Hameeda Ibrahim,Moustafa Ahmed,Fumio Koyama","Analysis of High-speed Double Transverse Coupled Cavity VCSELs","The 66th JSAP Spring Meeting 2019",,,"  9p-W331-3",,,2019,Mar.
"Moustafa Ahmed,Hameeda R Ibrahim,Fumio Koyama","Vertical]Cavity Surface]Emitting Lasers for Ultra]High Speed Photonics",,"International Journal of Nanoelectronics and Materials",,"Volume 11","No. 2","pp. 211]220",2018,Mar.
"Ahmed M. A. Hassan,M. Ahmed,M. Nakahama,F. Koyama","Theoretical Investigation of Slow-Light VCSEL Amplifier",,"Journal of Experimental &Theoretical Nanotechnology",,"Vol. 2","No. 2","pp. 93 ? 104",2018,Mar.
"Ibrahim Hameeda Ragab,FUMIO KOYAMA,Moustafa Ahmed Hafez","Large Signal Modulation Analysis of High-speed Double Transverse Coupled Cavity VCSELs","The 24th General Congress of the International Commission for Optics",,,"  Tu1J-06",,,2017,Aug.
"Ahmed Mohamed Ahmed Hassan,Moustafa Ahmed Hafez,Masanori Nakahama,FUMIO KOYAMA","Numerical analysis of Watt-class VCSEL amplifier","The 24th General Congress of the International Commission for Optics",,,"  P14-02",,,2017,Aug.