ETS 300 681 : 20001

Foreword
1 Scope
2 Normative references
3 Definitions and abbreviations
  3.1 Definitions
  3.2 Abbreviations
4 Definition of the ODN in an OAN
  4.1 Introduction
  4.2 Definition of ODN architectures
  4.3 ODN functions
  4.4 Protection configurations
5 Wavelength ranges
  5.1 Wavelength range for the 1310 nm region
  5.2 Wavelength range for the 1550 nm region
6 Specification of the optical path
  6.1 Definition of the optical path
  6.2 Loss allowance
  6.3 Passive optical components
  6.4 Reflectance (return loss)
  6.5 Chromatic dispersion
  6.6 Optical delay
  6.7 Polarization
  6.8 Environmental conditions
7 Radiation safety requirements
8 Introduction of OAs in the OAN
9 Influence of upgrade possibilities
Annex A (informative): The bus architecture
Annex B (informative): Protection configurations
Annex C (informative): Example of application of the
         calculation methodology
Annex D (informative): Survey of possible wavelength
         allocation for interactive services
Annex E (informative): ODN reflectance calculations
Annex F (informative): Bibliography
History

This draft European Telecommunications Standard (ETS) defines the optical distribution Network (ODN) which is that part of the Optical Access Network (OAN) between the Optical Network Unit (ONU ) and the Optical Line Terminal (OLT). This ETS primarily addresses the optical aspects related to the transmission of the interactive services in an OAN according to the functional requirements specified in ETS 300 463. Optical aspects related to the transmission of signals corresponding to distributive services, which may have impact on the definition of this type of ODN (e.g the use of Optical Amplification) are also taken into account, even if further studies are required in some cases.