What is G652.D fibre
G652.D fibre, also known as G.652.D fibre, is a type of single-mode optical fibre that is widely used in telecommunications networks. It is defined by the ITU-T (International Telecommunication Union - Telecommunication Standardization Sector) recommendation G.652, specifically under the category D, which includes improvements over earlier subcategories (G.652.A, G.652.B, and G.652.C).