OS1 and OS2 singlemode fiber cables tend to be the most expensive, while multimode cables as a whole are cheaper. Although they can do the same job in some instances, the different construction methods make each of them better suited to certain tasks and budgets. Commercial building installations with 100-200 network drops generally range from $15,000 to $30,000. Single-mode fiber costs less per foot than multimode fiber, but it requires more. Choosing between single-mode (SMF/OS2) and multimode (MMF/OM3–OM5) fiber is more than a cabling preference, it determines your reachable distance, optics cost, upgrade path, and even day-to-day operability (polarity, cleaning, testing). Understand how to choose fiber optic cable by comparing single‑mode vs.
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