When choosing fiber optic, there are two key points:Look at distance, look at budget. Short distance (within a few hundred meters) and limited budget, choose multi-mode; For long distances (over several kilometers) or pursuing high bandwidth, choose single-mode.

‌multimode fiber(such as OM3/OM4) is suitable for short distance, high-density scenarios, such as:

• ‌Internal Data CenterConnection between cabinets and floors (distance ≤ 400 meters)

• ‌Enterprise LANShort distance cabling in office buildings and parks, with controllable costs and convenient construction

• ‌Storage Network (SAN)Short distance high-speed interconnection scenarios such as 32GB fiber channel

‌single-mode fiber(such as G.652) is designed specifically for long-distance and large capacity applications, with typical applications including:

• ‌Construction of metropolitan area network/backbone networkLong distance transmission across cities and regions

• ‌5G base station feedbackScenarios that require stable transmission and a distance exceeding 2km

• ‌Data Center Interconnection (DCI)Remote data backup and synchronization