Fiber Optics Institute

Standards library

Practical summaries of the international standards that govern fiber optics — with links to the official sources. Standards texts are copyrighted by their publishers; always obtain the official document.

IEC
61280-4-1 / 61280-4-2

Installed cabling attenuation measurement (MM / SM)

The reference field-test methods for installed links: one-cord reference, encircled-flux launch for multimode (4-1) and single-mode link testing incl. OTDR usage (4-2). Adopted by TIA-526-14/526-7.

Official source ↗

IEC
61300-3-35

Fibre optic connector endface visual inspection

Defines inspection zones (core, cladding, adhesive, contact) and pass/fail criteria for scratches and defects — the basis of every 'inspect before you connect' program.

Official source ↗