Fibre optic interconnecting devices and passive components – Performance standard – Part 031-2: Non-connectorized single-mode 1×N and 2×N non-wavelengthselective branching devices for Category C – Controlled environment (Edition 1.0)
This part of IEC 61753 contains the minimum initial tests and measurement requirements and severities which a non-wavelength selective branching device (NWBD) should satisfy in order to be categorized as meeting the requirement of this IEC standard. The requirements cover balanced bidirectional non-connectorized single-mode 1 ?? N and 2 ?? N non wavelength-selective branching devices for use in an IEC Category C environment (N is the number of branching ports)@ especially but not exclusively used for PON application. For balanced NWBD two attenuation and uniformity performance classes are considered: class A (premium class) which meets more restrictive requirements (i.e. for extended reach PON application) and class B (standard class) for standard application (i.e. normal reach PON application). The requirements also cover unbalanced bidirectional non-connectorized single-mode@ nonwavelength- selective branching devices; however@ the specifications of unbalanced branching devices are limited to 1 ?? 2 and 2 ?? 2 devices because they are the most commonly used.