Analysis of Methods to Break Through the Free Spectral Range Limitation. X-Disciplinarity, [S. l.], v. 2, n. 3, p. 3, 2026. DOI: 10.63174/xdi.UVNB2355. Disponível em: https://instipub.com/xdi/article/view/105. Acesso em: 27 jul. 2026.