Choosing a Mode Conditioner for Use with the Optical Backscatter Reflectometer in Diagnosing Multi-Mode Fiber
Describes how to choose a mode conditioner when working with the OBR
When the fiber under test is MMF there will be a SMF to MMF transition since the OBR uses SMF in its internal measurement networks. Choosing the most effective mode launch for a particular task will provide the best performance and ensure success. This application note discusses three methods of mode conditioning, the advantages and disadvantages of each method, as well as when to use them. These methods are 1) direct launch method 2) full equilibrium mode launch 3) partial mode launch.