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Optical fiber communication 22021/2/19 、2×2定向耦合器 Directional couplers -Definitions 分束比( Splitting Ratio): a=p/P 通过损耗( Through put loss) THP 101 g 插入损耗( excess loss) g=-101g 3-P4 搭线损耗( Torp loss): LTEP=-10lg1-2 Copyright Wang Yan 2021/2/19 Optical fiber communications 二、2×2定向耦合器 (Directional couplers-Definitions ) 分束比(Splitting Ratio): 通过损耗(Through put loss): 插入损耗(excess loss): 搭线损耗(Torp loss ): 3 4  = P / P 1 3 10 P P LTHP = − Lg 1 3 4 10lg P P P LE − = − 1 4 10lg P P LTEP = −
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