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本文介绍用相空间中的Wigner分布函数,推导渐变折射率活动连接器中两光纤有一间隙时的耦合系数和功率损失,并算出了数值结果。用一批商用活动连接器做实验。从测量结果看出,实验数据与理论的一致性,以及实验的可重复性。对两段渐变折射率光纤的径向位移和角度失配的耦合系数和功率损失,本文按实验误差来考虑。经计算指出,移动中引起的附加径向位移是主要误差来源。文中指出,计算活动连接器移动后的功率损失,不仅有实用价值,而且还可以为制作低耗活动连接器提供理论依据。
In this paper, we introduce the Wigner distribution function in phase space to deduce the coupling coefficient and power loss of two optical fibers in a graded index active connector with a gap, and calculate the numerical results. Experiment with a number of commercial activity connectors. From the measurement results, the experimental data and the theory of consistency, as well as the experimental repeatability. The coupling coefficient and power loss of radial displacement and angle mismatch of two graded index optical fibers are considered in this paper based on experimental error. It is calculated that the additional radial displacement caused during the movement is the main source of error. The article points out that calculating the power loss after moving the connector is not only of practical value, but also can provide a theoretical basis for making the connector with low consumption.