[問題] 光纖通訊
有一個名詞叫:Numerical Aperture(數值孔徑)
上面這個是課本最後面名詞解釋出現的,課本P.278
不過有一個東西要背,就是Coupling-loss mechanisms
其中在Intrinsic裡,有一個是
Numerical-Aperature mismatch,課本P.112
大家有沒有發現上面的多了一個a啊!
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