IEC 60793-2:2015

Overview

IEC 60793-2:2015 is an international standard published by the International Electrotechnical Commission (IEC) that specifies general product specifications for optical fibres. It covers both multimode and single-mode optical fibres, providing detailed and standardized requirements essential for manufacturers, designers, and users of optical fibre technology. This eighth edition updates the previous 2011 version by incorporating new fibre models and technical revisions, ensuring alignment with current technological advancements.

This standard is critical for the optical communications industry, defining the characteristics, construction, and testing methods for various categories of optical fibres to guarantee quality, compatibility, and performance.

Key Topics

• Multimode Fibre Categories (Class A)
  IEC 60793-2:2015 addresses four categories of multimode fibres-A1, A2, A3, and A4-each with specific sectional specifications covering core and cladding materials, refractive index profile, and intended application. Notably, sub-categories A3f and A3g are introduced as "under consideration," reflecting ongoing standardization for evolving fibre types.

• Single-Mode Fibre Classes
  The standard defines two single-mode fibre classes:

  • Class B: Typical single-mode fibres for general optical communication.
  • Class C: Single-mode fibres designed specifically for intraconnection.

• Family Specifications
  Detailed normative annexes provide family specifications for sub-categories based on fibre types or specific applications, allowing users to select fibres tailored to operational needs.

• Structural Requirements
  Construction aspects including core, cladding, and primary coating materials are defined. The coating's color coding follows IEC 60304 standards, which ensures easy identification and consistency.

• Test and Measurement Methods
  IEC 60793-2:2015 mandates tests and measurement procedures for all specified fibre attributes. Where possible, these follow other IEC standards, enhancing consistency and reliability in evaluation.

• Quality Assurance
  The document stresses quality assurance processes to maintain the integrity and performance of optical fibres through the production and verification phases.

Applications

The scope of IEC 60793-2:2015 encompasses a wide range of optical fibre applications, including:

• Telecommunications: Both multimode and single-mode fibres specified in this standard form the backbone of modern high-speed communication networks.

• Data Centres and Local Area Networks (LANs): Fibre classes, especially single-mode intraconnection fibres (Class C), support high-density, short-range interconnections.

• Industrial and Medical Equipment: Reliable fibre specifications ensure performance in harsh or specialized environments where optical transmission is critical.

• Broadband Infrastructure: Enhances interoperability in optical networks by adhering to standardized fibre specifications, reducing deployment costs and complexity.

• Research and Development: Provides a benchmark for innovation and testing of new fibre types under a recognized international framework.

Related Standards

IEC 60793-2:2015 must be used in conjunction with related standards to form a complete framework for optical fibre technologies:

• IEC 60793-1 Series: Specifies measurement methods and test procedures essential for characterizing fibre attributes in accordance with IEC 60793-2 specifications.

• IEC 60304: Defines the color codes for fibre insulation and coatings, ensuring consistent identification.

• Sectional specifications specific to fibre categories:

  • IEC 60793-2-10: A1 Multimode fibres (graded index glass core)
  • IEC 60793-2-20: A2 Multimode fibres (quasi-step or step index glass core)
  • IEC 60793-2-30: A3 Multimode fibres (plastic core under consideration)
  • IEC 60793-2-40: A4 Multimode fibres (plastic core and cladding)
  • IEC 60793-2-50: Class B Single-mode fibres
  • IEC 60793-2-60: Class C Single-mode intraconnection fibres

Summary

IEC 60793-2:2015 plays a foundational role in the standardization of optical fibre product specifications, embracing both multimode and single-mode fibre technologies. Its clear categorization, thorough construction guidelines, and rigorous testing protocols ensure that fibre optic components meet global expectations for compatibility, reliability, and performance. This standard supports industries worldwide in deploying efficient and future-proof optical networks essential for modern communications and data transmission systems.

Keywords: IEC 60793-2, optical fibres, multimode fibres, single-mode fibres, fibre specifications, optical fibre standards, optical communication, IEC standards, fibre construction, fibre testing, fibre coating, optical networks.