Could you please describe your application: p[%FH?
1, is the emitting source single mode or multimode? what are the parameters i.e. divergence, waist, ... P\CT|K'P
2, is the fiber single mode or multimode? what is the NA, core dia,... S2fBZ=V8
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Generally, fiber coupling efficiency of 40%~90% is reasonable. Fn!kest
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Again let us know your specific bug. It@.U|
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