Could you please describe your application: JKYl
1, is the emitting source single mode or multimode? what are the parameters i.e. divergence, waist, ... ]Ah<kq2sk
2, is the fiber single mode or multimode? what is the NA, core dia,... SV2\vby}C
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Generally, fiber coupling efficiency of 40%~90% is reasonable. G\f:H%[5[
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Again let us know your specific bug. .0y .0=l
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