Amendment 1 to Recommendation ITU-T G.650.3 (2008) adds a new Appendix III, which describes a method for differentiating splice loss and macrobending loss in installed links. The method is based on OTDR measurement at two wavelengths, and it is recommended to use a bidirectional OTDR method which is able to determine the exact loss at the splice point. This optional method can be used to identify the main loss factor when large loss is observed in an OTDR trace.
ITU-T G.650.3 AMD 1-2011 Referenced Document
ITU-T G.657-2009 Characteristics of a bending-loss insensitive single-mode optical fibre and cable for the access network (Study Group 15)
ITU-T G.650.3 AMD 1-2011 history
2017ITU-T G.650.3-2017 Test methods for installed single-mode optical fibre cable links (Study Group 15)
2011ITU-T G.650.3 AMD 1-2011 Test methods for installed single-mode optical fibre cable links Amendment 1 (Study Group 15)
2008ITU-T G.650.3-2008 Test methods for installed single-mode optical fibre cable links (Study Group 15)
ITU-T G.650.3 AMD 1-2011 Test methods for installed single-mode optical fibre cable links Amendment 1 (Study Group 15) has been changed from ITU-T G.650.3-2008 Test methods for installed single-mode optical fibre cable links (Study Group 15).
ITU-T G.650.3 AMD 1-2011 Test methods for installed single-mode optical fibre cable links Amendment 1 (Study Group 15) was changed to ITU-T G.650.3-2017 Test methods for installed single-mode optical fibre cable links (Study Group 15).