第十一章 关于光纤的测试光纤与铜缆的对比光纤基础知识光纤的选用影响衰减的因素光纤测试设备Fiber Optic Advantages光纤与铜缆的对比光纤基础知识—电磁谱光纤基础知识—波长的选择多模(MD) 工作于 850 nm 和 1300 nm单模(SM) 工作于 1310 nm 和 1550 nm多模与单模光纤MULTIMODE FIBER – Huge Volume Short Distance < 2 kmSINGLE MODE FIBER – Huge Volume Long Distance From 2km to 100kmCoreCladdingCoatingMultimode FiberPowered by LEDs and VCSELs at 850nm and 1300nmLow cost electronics Usually Has ORANGE Jack