Could you please describe your application: b-8{bP]n
1, is the emitting source single mode or multimode? what are the parameters i.e. divergence, waist, ... n*6Oa/JG7
2, is the fiber single mode or multimode? what is the NA, core dia,... cF9bSY_Eh
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Generally, fiber coupling efficiency of 40%~90% is reasonable. e`%U}_[d
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Again let us know your specific bug. Y<0;;tVf4U
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