When beams of light pass through a fiber optic cable, they tend to degrade.
当光束通过光纤，光强度趋于降低。
Based on Finel formulas, the efficiency of the coupling of light source With light fiber or light cable entered from a light source was estimated.
本文从菲涅尔公式出发，估算了从光源系统中发出的光进入光纤或光缆的耦合效率。
On the other hand, fiber transmission remedy the lacks of cable transmission. Fiber system can resist electromagnetism interference but light module is easier to be affected by temperature.
与之相对应，如果采用光纤传输波控信号，就很好的弥补了电缆传输的不足，系统抗电磁干扰的能力大大提高。
Optical Fiber series: solid side light of optical fiber, end light of optical fiber, optical fiber cable, Dmx512 optical fiber tree, crystal droplight of optical fiber.
光纤照明：实心侧光光纤、尾光光纤、单只光纤、通讯光纤（光缆）、数码光纤树、光纤水晶吊灯。
Optical Fiber series: solid side light of optical fiber, end light of optical fiber, optical fiber cable, Dmx512 optical fiber tree, crystal droplight of optical fiber.
光纤照明：实心侧光光纤、尾光光纤、单只光纤、通讯光纤（光缆）、数码光纤树、光纤水晶吊灯。
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