EN IEC 61753-061-2:2020 PDF

Overview

EN IEC 61753-061-2:2020 is the performance standard for single‑mode fibre optic pigtailed style polarization‑independent isolators intended for category C - controlled environments. This second edition (2020) replaces the 2012 edition and is published as an RLV (Redline Version) that shows technical changes versus the previous edition. The standard defines the minimum test and measurement requirements and severities that a fibre optic isolator (as specified by IEC 61202-1) must satisfy to be classified for use in controlled environments per IEC 61753-1.

Key topics and technical requirements

• Scope and classification: Applies specifically to single‑mode, pigtailed, polarization‑independent isolators for category C (controlled environments).
• Performance testing framework: Specifies required tests, sample sizes and reporting requirements to demonstrate compliance.
• High optical power testing: New detailed high optical power test procedures and conditions are included in Annex B (forward, backward and bidirectional input test set‑ups and procedures).
• Measurement conditions: Addition of detailed measurement and test condition guidance in Annex C to support consistent, repeatable verification.
• Harmonization: Test conditions aligned with IEC 61753-1:2018 and clause structure updated to follow current ISO/IEC Directives.
• Sample sizing & severity: Defines sample size rules and test severities (see Annex A and main tables) appropriate for category C devices.
• Test references: Uses procedures from the IEC 61300 series (vibration, torsion, shock, high optical power, temperature, damp heat, spectral and polarization measurements).

Practical applications

This standard is used to specify, test and qualify pigtailed single‑mode isolators where reliable isolation performance in a controlled environment is required. Typical practical uses include:

• Qualification of isolators for telecom and datacom optical subsystems
• Component acceptance testing in manufacturing and incoming inspection
• Performance verification for fibre amplifier and transceiver modules where back‑reflection control is critical
• Engineering specifications for system integrators and OEMs designing controlled‑environment optical racks or bench systems

Who should use this standard

• Optical component manufacturers - to design and certify isolators to category C requirements
• Test laboratories and QA teams - to perform required measurements and prepare test reports
• Procurement/specification engineers - to include verified performance criteria in purchase contracts
• Certification bodies and compliance assessors - to evaluate conformity to IEC performance levels

Related standards

Key cross‑references and normative documents include:

• IEC 61202-1 (generic isolator specification)
• IEC 61753-1 (performance standard framework)
• IEC 61300 series (basic test & measurement procedures)
• IEC 60793-2-50, IEC 60794-2-50 (fibre and cable product specifications)

Keywords: EN IEC 61753-061-2:2020, fibre optic isolator, single‑mode, pigtailed, polarization independent, category C, controlled environments, high optical power test, IEC 61753-1.