OM4 is multimode fiber — optimized for short distances (up to 400m at 10Gbps) using lower-cost VCSEL transceivers. OS2 is single-mode — designed for long distances with ultra-low loss. For most in-building backbone, OM4 is the right call. For campus and building-to-building links, OS2 is correct.
Fusion splicing uses an electric arc to permanently weld two fiber ends together with a joint loss of less than 0.1dB. It is used for long outside plant runs, when connectors would add too much loss, or when repairing a broken fiber. We carry fusion splicing equipment and perform this in the field.
Every strand is tested bi-directionally with an OTDR, which maps the fiber and measures loss, reflectance, and splice quality. We also use a light source and optical power meter to measure end-to-end insertion loss. All results are documented and delivered with the project closeout.
Yes — most modern networks use fiber for backbone (IDF-to-MDF, floor-to-floor, building-to-building) and copper (Cat6A) for the horizontal drops to workstations, cameras, and access points. We design and install both, often in the same project.
MPO/MTP holds 12 or 24 strands in a single push-pull connector — used in data centers for high-density spine-to-leaf connections and 40G/100G parallel optics. For most commercial applications, standard LC or SC duplex connectors are used. We install both.