EN 61202-1:2017 (adoption of IEC 61202-1:2016) is the European generic specification for fibre optic isolators - passive, non‑reciprocal optical devices with two optical ports (each a fibre or a fibre connector) used to transmit optical power directionally. This fourth edition supersedes EN 61202-1:2009 and introduces technical revisions including updated terms and definitions, deletion of the quality assessment level from classification, and reorganization of annex clause numbering.
Key topics and technical requirements
- Scope and device definition: Covers isolators that are passive (no opto‑electronic elements), non‑reciprocal and two‑port (pigtails or connectors).
- Classification system: Defines product classification by type, style, and variant, including normative reference extensions.
- Documentation & specification: Requirements for drawings, symbols, a two‑level specification system and test data sheets to ensure consistent product definition.
- Design, materials and workmanship: General expectations for construction, choice of materials and manufacturing quality.
- Performance requirements and testing: Mandates performance parameters, measurement and test procedures (referencing IEC/EN test standards) and test data reporting.
- Identification, marking, packaging and storage: Rules for variant identification numbers, component/package marking, packaging and recommended storage conditions.
- Safety and reliability: Guidance on safe use and reliability assessment; interlinking with reliability and interface standards.
- Technology examples (informative): Annex A - magneto‑optic (Faraday rotator based) bulk isolator; Annex B - optical waveguide isolator (mode conversion and phase‑shifter examples).
Applications and who uses this standard
EN 61202-1:2017 is intended for:
- Manufacturers of fibre optic isolators and passive fibre‑optic components (to define product families, tests and documentation).
- Test laboratories and quality departments (to implement standardized test procedures and report test data).
- System integrators and designers in optical communications, fibre lasers, amplifier protection and instrumentation (to select compliant isolators and ensure correct interfacing).
- Procurement and specifications teams (to write unambiguous product requirements).
- Certification bodies referencing harmonized documentation for conformity assessment.
Typical applications include protecting lasers and optical amplifiers from back reflections, ensuring unidirectional signal flow in fibre optic links, and use in passive component assemblies for telecom, datacom and industrial photonics.
Related standards
Normative and referenced documents include series and standards such as:
- IEC/EN 61300 (basic test and measurement procedures)
- IEC 60068 (environmental testing)
- IEC 60825-1 (laser product safety)
- IEC 61753 / IEC 61754 interface/performance families and other IEC/ISO GPS standards cited in the normative annex.
Keywords: EN 61202-1:2017, IEC 61202-1:2016, fibre optic isolators, isolators used in the field of fibre optics, fibre optic interconnecting devices, passive components.
