Could you please describe your application: ;Wr,VU]
1, is the emitting source single mode or multimode? what are the parameters i.e. divergence, waist, ... **YNR:#Y
2, is the fiber single mode or multimode? what is the NA, core dia,... NU/~E"^I.
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Generally, fiber coupling efficiency of 40%~90% is reasonable. s?K4::@Fv
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Again let us know your specific bug. ' *p-`
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