IEC 60793-2:2019

Overview

IEC 60793-2:2019 - "Optical fibres - Part 2: Product specifications - General" defines the general product specifications that apply to both multimode and single‑mode optical fibres. It sets the framework for sectional specifications (A1, A2, A3, A4 for multimode; B, C and D for single‑mode and polarization‑maintaining) and the family specifications that detail sub‑category requirements. The standard specifies attributes, test/measurement definitions and quality assurance responsibilities and is intended to be read alongside the IEC 60793‑1 measurement and test methods series.

Key topics and technical requirements

• Scope and structure: Establishes a hierarchy of requirements - sectional specifications (per category/class) and normative family annexes (per fibre type or application).
• Multimode categories (Class A): A1 (graded glass core/glass cladding), A2, A3 and A4 with sub‑categories and specific index‑profile definitions.
• Single‑mode classes (B, C, D): Defines common requirements for glass core/glass cladding single‑mode fibres, including the new Class D polarization‑maintaining fibres added in this edition.
• Fibre designations: Introduces revised designations for most A1 sub‑categories and for class B single‑mode fibres; adds the new A1‑OM5 multimode fibre model.
• Tests and measurements: Each specified attribute has defined test or measurement methods-preferably by reference to IEC 60793‑1 series; otherwise methods are outlined in the sectional specification.
• Construction and materials: Requirements for core, cladding, primary/secondary coatings and coloured coatings/buffers, including interface and colour conventions (see IEC 60304).
• Quality assurance: Suppliers must establish QA and QC procedures; acceptance tests and sampling to be agreed between supplier and customer.

Practical applications and users

IEC 60793-2:2019 is used by:

• Fibre manufacturers to specify product families, ensure compliance and label fibre types (e.g., OM5).
• Component and cable designers who need standardized fibre attributes for system design and compatibility.
• Test laboratories and QA teams performing acceptance and type testing using IEC 60793‑1 referenced methods.
• Network architects and procurement defining performance and interoperability requirements for LAN, data centre and telecom deployments.
• Certification bodies and regulators verifying conformance to international product specifications.

By standardizing attributes, measurements and designations, IEC 60793‑2 improves interoperability, supply chain clarity and reliable performance for both multimode and single‑mode optical fibres.

Related standards

• IEC 60793‑1 (all parts) - Measurement methods and test procedures for optical fibres
• IEC 60793‑2‑10 / ‑20 / ‑30 / ‑40 / ‑50 / ‑60 / ‑70 - Sectional specifications for A1–A4, B, C, D classes
• IEC 60304 - Standard colours for insulation (referenced for coating/buffer colours)