IEC 62077:2015

Overview

IEC 62077:2015 - Fibre optic interconnecting devices and passive components - Fibre optic circulators - Generic specification - is the international generic specification for fibre optic circulators (optical circulators). It applies to passive, non‑reciprocal devices with three or more fibre ports used to directionally transmit optical power. Edition 3.0 (2015) updates the 2010 edition by harmonizing terms and definitions with other IEC generic specifications and removing the previous assessment level. Annex A gives an example technology (magneto‑optic effect) and Annex B illustrates applications.

Key Topics

• Scope and definitions
  • Non‑reciprocal optical devices; ports are optical fibres or connectors.
  • Terms such as port, transfer matrix, transfer coefficient, logarithmic transfer matrix, completely/incompletely circulated type.
• Classification
  • Classification by type, style and variant to describe functional and mechanical configurations.
• Performance parameters
  • Transfer matrix and logarithmic transfer matrix to characterise power routing between ports.
  • Important performance metrics (e.g., insertion loss, isolation) are defined and illustrated.
• Documentation and testing
  • Requirements for drawings, specification system, test methods, and test reports to support reproducible verification.
• Design, construction and materials
  • General workmanship, materials guidance, identification/marking, packaging and storage conditions.
• Safety and standards alignment
  • Normative references include IEC 61300 series (fibre optic interconnecting devices), IEC TS 62538 (device categorization), IEC 60825 (laser safety) and related graphical/symbol standards.

Applications and Who Uses It

IEC 62077:2015 is relevant to:

• Component manufacturers designing or certifying fibre optic circulators for telecom, datacom and sensing systems.
• System integrators and OEMs specifying circulators for ring networks, bidirectional links, wavelength routing, optical add/drop and distributed sensing.
• Test laboratories and quality assurance teams verifying insertion loss, isolation and transfer matrices against internationally accepted definitions.
• Procurement/specification engineers who require standardized product descriptions, markings and documentation for interoperability. Practical benefits include improved interoperability, consistent testability, clearer procurement specs and safer deployment.

Related Standards

• IEC 61300 (all parts) - fibre optic interconnecting devices tests and measurements
• IEC TS 62538 - categorization/definitions for passive components
• IEC 60050‑731, IEC 60825, IEC TR 61930, IEC 60617 - terminology, safety and symbology
  For complete requirements and normative details, obtain IEC 62077:2015 from the IEC webstore.