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空间散射光到光纤的耦合在许多领域都得到广泛的应用。然而,当被测物体较大时,如何有效地将空间散射光有效地耦合到光纤的研究还较少。耦合效率和接收视场是空间散射光耦合到光纤接收装置的两个重要的特性参数。文中通过理论分析和软件仿真,分析了在径向移动、轴线移动和不同入射角的情况下,改写耦合效率的变换,比较了在满足一定的耦合效率时,光纤接收装置的几种透镜耦合方式接收视场的大小。最后,通过实验对仿真内容进行了验证。
The coupling of spatially scattered light to optical fiber is widely used in many fields. However, when the object to be measured is large, how to effectively couple the scattered light to the optical fiber is less studied. Coupling efficiency and receiving field of view are two important characteristic parameters of the spatial scattered light coupling to the fiber receiving device. In this paper, through the theoretical analysis and software simulation, the transformation of the coupling efficiency is rewritten under the conditions of radial movement, axial movement and different incident angles. Several kinds of lens coupling modes of the optical fiber receiving device are compared when a certain coupling efficiency is satisfied Receive the size of the field of view. Finally, the simulation is verified through experiments.