Blue is not a super common color for fiber optics. It identifies polarization maintaining single-mode fiber. This is a specialized type of cable that polarizes the light in the cable and maintains that polarization. If you see yellow, you know instantly that you're working with single-mode, but you don't know which. The same old rule comes up again. UPC connectors have a flat endface and offer low insertion loss and back reflection., 48, 96, or 144 fibers), the industry uses a “Tube and Fiber” system. Example: What. There are different types of fiber optic cables because each type is optimized for specific applications that have unique requirements for bandwidth, transmission distance, and environmental factors. For our readers, Aqua OM3 cable may still be useful, but we think most will use OM4 (Aqua or Violet), OM5 (Lime Green), or OS2 (Yellow) cables.
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