Could you please describe your application: V}=9S@$o
1, is the emitting source single mode or multimode? what are the parameters i.e. divergence, waist, ... =xWZJ:UnU
2, is the fiber single mode or multimode? what is the NA, core dia,... y.26:c(
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Generally, fiber coupling efficiency of 40%~90% is reasonable. ]fIv{[A_
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Again let us know your specific bug. V|ax(tHv
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