NBN EN 61977 : 2010

INTRODUCTION
1 Scope
2 Normative references
3 Definitions
4 Requirements
  4.1 Classification
  4.2 Documentation
  4.3 Standardisation system
  4.4 Design and construction
  4.5 Quality
  4.6 Performance requirements
  4.7 Identification and marking
  4.8 Packaging
  4.9 Storage conditions
  4.10 Safety
5 Quality assessment procedures
  5.1 Primary stage of manufacture
  5.2 Structurally similar components
  5.3 Qualification approval procedures
  5.4 Quality conformance inspection
  5.5 Certified record of released lots
  5.6 Delayed deliveries
  5.7 Delivery release before completion of group B tests
  5.8 Alternative test methods
  5.9 Unchecked parameters
Annex ZA (normative) Normative references to international
         publications with their corresponding European
         publications

Applicable to the family of fibre optic filters. These components have all of the following general features: they are passive for the reason that they contain no optoelectronic or other transducing elements which can process the optical signal launched into the input port; they modify the spectral intensity distribution in order to select some wavelengths and inhibit others; they are fixed, i.e. the modification of the spectral intensity distribution is fixed and can not be tuned; they have a maximum of two ports for the transmission of optical power; the ports are optical fibre or optical fibre connectors; they differ according to their characteristics.