Birefringence for Elliptical-Core Fibers with Low Ellipticities. Ibn AL-Haitham Journal For Pure and Applied Sciences, [S. l.], v. 35, n. 1, p. 39–49, 2022. DOI: 10.30526/35.1.2798. Disponível em: https://jih.uobaghdad.edu.iq/index.php/j/article/view/2798.. Acesso em: 16 jul. 2024.