G.657
G.657 is an international standard developed by the Standardization Sector of the International [Telecommunication Union] that specifies single-mode [optical fiber] cable.
History
The G.657 Recommendation builds on a previous fiber optic specification in G.652.G.657 was first published in 2006. Revisions of the standard were since published in 2009, 2012, 2016, and 2024.