GB/T 46349.1-2025 Fibre optic fixed filters—Part 1:Generic specification

Scope

This document specifies the unified requirements for the optical, mechanical, and environmental performance of fiber optic fixed filters.
This document applies to fiber optic fixed filters that possess all of the following general characteristics:
a) Passive in nature, without photoelectric or other conversion elements for processing the optical signals inputted into the input port.
b) Wavelength selective, capable of altering the spectral intensity distribution to select certain specific wavelengths and suppress others.
c) Fixed in nature, with the spectral intensity distribution being fixed and non-adjustable.
d) Equipped with input and output ports or universal ports (simultaneously serving input and output functions) for optical power transmission, which are either fiber optic or fiber optic connectors.
e) Classified according to their characteristics into the following types or combinations of types:
1) Short-wave pass type (only wavelengths below or equal to a given value can pass through);
2) Long-wave pass type (only wavelengths above or equal to a given value can pass through);
3) Band-pass type (only one optical window is allowed);
4) Notch-filter type (only one optical window is suppressed);
5) Gain-flat type (compensation devices for spectral profiles).
This document includes the terminology of the IEC 61753-04× series standards. The published IEC 61753-04× series standards are listed in the references.

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