The collimator is used for collimating emanative Gaussian beam to obtain almost parallel beam with small emanative angle, or focusing parallel beam into fiber. It can improve coupling efficiency.
光准直器的作用就是将光纤中出射的发散光经准直后变成发散角极小的近似平行光束或者将平行光束会聚进入光纤,以此来提高光器件的耦合效率。
参考来源 - CThe stable and reliable operation voltage of the probe can be given by the following methods: (1) 20% light coupling efficiency is obtained by direct coupling of LD-optical fiber.
通过下述方法可提供稳定、可靠的探头工作电压:LD—光纤的直接耦合方式,可实现20%左右的光耦合效率;采用多模光纤传输功率;选择升压变压器最佳变比提高光电转换效率;采取LD驱动电路光反馈以及致冷措施使其发光幅值稳定。
参考来源 - 光纤传输光推动油罐多参数测量系统理论与实验研究·2,447,543篇论文数据,部分数据来源于NoteExpress
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