CONTENTS

�1���� Scope�
�2���� References�
�3���� Definitions��
������� 3.1���� Terms defined elsewhere����
������� 3.2���� Terms defined in this Recommendation�������
�4���� Abbreviations���
�5���� Classification of optical network elements�
�6���� Reference points��
�7���� Functional description of the optical network elements (ONEs)�����
������� 7.1���� Functional description of a DWDM line segment����
������� 7.2���� Functional description of an OADM (optical add/drop multiplexer)�
������� 7.3���� Functional description of a PXC (photonic cross-connect)��
������� 7.4���� Functional description of an AOWC (all-optical wavelength converter)�������
������� 7.5���� Functional description of an OA (optical amplifier)��
������� 7.6���� Functional description of an optical 3R regenerator�
������� 7.7���� Functional description of an optical 2R regenerator�
�8���� ONE transfer parameters�
������� 8.1���� DWDM line segment transfer parameters���
������� 8.2���� OADM transfer parameters�����������
������� 8.3���� PXC transfer parameters���
������� 8.4���� AOWC transfer parameters�����������
������� 8.5���� OA transfer parameters�����
������� 8.6���� Optical 3R transfer parameters�������
������� 8.7���� Optical 2R transfer parameters�������
�9���� Impact of the combination of cascaded optical transfer functions on line system performance����
������� 9.1���� Impact of cascaded ONEs on line system OSNR���
������� 9.2���� Impact of cascaded ONEs on line system residual dispersion����������
������� 9.3���� Impact of cascaded ONEs on line system PMD and PDL��
������� 9.4���� Impact of cascaded ONEs on line system channel ripple�����
������� 9.5���� Impact of cascaded ONEs on line system transients
������� 9.6���� Impact of the channel uniformity of cascaded ONEs on line system performance�����
10���� Calculation method to combine the system penalty contribution from the impact of the parameters����
Appendix I � Example transfer parameter values����
������� I.1���� �� Example 1 � Values for a re-configurable OADM without amplifiers���������
������� I.2���� �� Example 2 � A second set of values for a re-configurable OADM without amplifiers���������
������� I.3���� �� Example 3 � Values for a re-configurable OADM with amplifiers��
������� I.4���� �� Example 4 � A second set of values for a re-configurable OADM with amplifiers��
������� I.5���� �� Example 5 � Values for a PXC with add/drop functions and amplifiers������
Appendix II � Examples of the effects of cascading ONEs����
������ II.1���� Example of the impact of cascaded ONEs on line system OSNR����
������ II.2���� Example of the impact of cascaded ONEs on line system residual dispersion�����������
������ II.3���� Examples of the impact of cascaded ONEs on line system PMD and PDL��
������ II.4���� Examples of the impact of cascaded ONEs on line system channel ripple�����
������ II.5���� Example of the impact of cascaded ONEs on line system transients�
������ II.6���� Example of the impact of the channel uniformity of cascaded ONEs on line system performance����
Appendix III � Example application of this Recommendation����
����� III.1���� Procedure��
����� III.2���� An example of this procedure���������
Appendix IV � The users of this Recommendation����
������ IV.1���� Introduction����������
������ IV.2���� The actors in the use of this Recommendation��������
������ IV.3���� Example of the activities of the actors��������
Bibliography����