ABD AL-MAJEED , Kawthar H.; HASAN, Alaa B.; ALDEEN , Sameer H. R. Evaluation of Optical Efficiency of Circular Cross-Section Torus Waveguide via Changing the Optical Parameters. Ibn AL-Haitham Journal For Pure and Applied Sciences, Baghdad, Iraq., v. 38, n. 2, p. 102–114, 2025. DOI: 10.30526/38.2.3932. Disponível em: https://jih.uobaghdad.edu.iq/index.php/j/article/view/3932. Acesso em: 22 apr. 2025.