Could you please describe your application: P5H_iH 1, is the emitting source single mode or multimode? what are the parameters i.e. divergence, waist, ... PqIskv+ 2, is the fiber single mode or multimode? what is the NA, core dia,... g[R4/]K^$ >=d 5Scix Generally, fiber coupling efficiency of 40%~90% is reasonable. F [Lg,} 52 *ii Again let us know your specific bug. ;[79Ewd#$ YV _ 7 .+A MANG2004 gKY6S?