Overview
IEC 61753-086-2:2009 is an International Electrotechnical Commission (IEC) performance standard for non-connectorized single‑mode, bidirectional WWDM devices used in passive optical networks (PON). It specifies the minimum initial performance, test and measurement requirements and severities that a fibre‑optic pigtailed device carrying 1 490 / 1 550 nm downstream and 1 310 nm upstream signals must satisfy to be classified as category C (controlled environments) under IEC 61753-1. Annex B provides functional information on these WWDM PON devices and Annex A defines sample sizes for testing.
Key topics and technical requirements
The standard concentrates on testable performance parameters and environmental conditions for WWDM PON components:
- Device type: non-connectorized, pigtailed, single‑mode, bidirectional WWDM for PON (1490/1550 nm downstream, 1310 nm upstream).
- Environmental category: Category C (controlled environments) - requirements apply where the device is used in controlled indoor settings.
- Test methods: referenced to the IEC 61300 series; fibres per IEC 60793‑2‑50.
- Measured parameters and example requirements:
- Attenuation: ≤ 0.8 dB (measurement uncertainty ±0.1 dB).
- Total channel isolation: ≥ 18 dB (between 1 480–1 500 nm and 1 550–1 560 nm); ≥ 30 dB (between 1 260–1 360 nm and 1 550–1 560 nm).
- Directivity: ≥ 50 dB (Grade U).
- Return loss: ≥ 50 dB (Grade U).
- Polarization dependent loss (PDL): ≤ 0.2 dB (measurement uncertainty ±0.05 dB).
- Optical power handling / damage threshold: specified test up to 300 mW total across wavelength bands, with staged increments and verification of attenuation/isolation/return-loss limits after exposure.
- Environmental tests include cold, dry heat, damp heat, change of temperature and mechanical tests per IEC 61300 parts. Test reports and supporting evidence are required.
Applications
IEC 61753-086-2:2009 is directly applicable to:
- Manufacturers and designers of WWDM PON passive components (splitters, filters, mux/demux elements) that are pigtailed and non‑connectorized.
- Test laboratories performing qualification, acceptance and factory tests for WWDM devices intended for controlled indoor installations.
- Telecommunication equipment vendors and PON system integrators specifying component performance for FTTH/FTTP networks that use bidirectional WWDM signaling (1490/1550 nm downstream, 1310 nm upstream).
Who should use this standard
- Component manufacturers for product design and quality control.
- R&D and compliance engineers validating PON WWDM modules.
- Procurement and specification writers in telecom operators and system integrators demanding category C performance.
- Test houses and certification bodies reporting compliance.
Related standards
Keywords: IEC 61753-086-2:2009, category C (controlled environments), WWDM, PON, 1490/1550 nm downstream, 1310 nm upstream, pigtailed WWDM devices.