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Bulk Fiber

Bulk Fiber Optic Cable โ€” Data Communication Backbone, Trunk & Indoor/Outdoor Fiber
Singlemode & Multimode โ€ข OS1/OS2 & OM1/OM2/OM3/OM4/OM5 โ€ข Indoor/Outdoor โ€ข Riser/Plenum โ€ข Armored & Direct Burial Options

Shop our selection of bulk fiber optic cable engineered for highโ€‘speed data communications in enterprise networks, data centers, campus backbones, and industrial environments. This category includes singlemode and multimode bulk fiber in common constructions for patch/IDF/MDF interconnects, tray runs, conduits, and longer backbone pulls. Choose the right fiber type and rating for your application: OS2 for long-reach links, or OM3/OM4/OM5 for high-density short-reach data center uplinks. Select a jacket rating that matches your pathway (OFNR riser, OFNP plenum, or indoor/outdoor), and pick the construction you need (tight-buffered, loose-tube, armored, or direct burial).

Why choose Gruber
  • Spec-correct selection โ€” OS/OM grades, jacket ratings, and constructions listed clearly.
  • Data-center practical โ€” trunk, backbone, and pull-friendly options for clean installs.
  • Custom cuts & kitting โ€” we can do custom lengths and staged reels for multi-run projects.
  • Real support โ€” tell us distance, transceivers, pathway, and termination plan and weโ€™ll help you match the right fiber.

Tip: Confirm SM vs MM, choose the correct OS/OM grade, verify plenum/riser requirements, and plan for proper bend radius and termination method (splicing, pigtails, or pre-terminated trunks).

Cut-to-Length Service โ€” Weโ€™ll Cut Any Spool to Your Exact Footage

Need a custom length? We can cut bulk wire directly from the spool to the exact footage you choose.
Add your desired length in the order notes (or contact us) and weโ€™ll confirm total cut charges before processing.

Cut Service Fee Rate How Itโ€™s Applied
$55 setup charge $0.065 per foot One-time setup + per-foot charge based on your requested length

Example: 500 ft cut = $55 + (500 ร— $0.065) = $87.50.

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Acronym Dictionary โ€” Bulk Fiber Optic Listings

Acronym Meaning
SM Singlemode fiber (long-reach links; typically 9/125โ€‘ยตm core/cladding).
MM Multimode fiber (short-reach, high bandwidth; typically 50/125 or 62.5/125โ€‘ยตm).
OS1 Singlemode grade optimized for indoor/controlled environments (often tight-buffered indoor builds).
OS2 Singlemode grade optimized for outdoor/long-reach links (lower attenuation; common for campus/backbone).
OM1 Multimode 62.5/125โ€‘ยตm (legacy indoor networks).
OM2 Multimode 50/125โ€‘ยตm (legacy/utility MM).
OM3 Laser-optimized 50/125โ€‘ยตm MM (common for 10G/40G/100G short reach).
OM4 Higher-bandwidth OM3-class MM for longer short-reach data center runs.
OM5 Wideband multimode supporting multiple wavelengths (SWDM) for expanded short-reach capacity.
OFNR Optical Fiber Nonconductive Riser rating (vertical pathways between floors).
OFNP Optical Fiber Nonconductive Plenum rating (air-handling spaces; low-smoke jacket).
I/O Indoor/Outdoor rated (jacket suitable for both building entry and exterior pathways).
TB Tight-buffered fiber construction (often used indoors; easier breakout/termination).
LT Loose-tube construction (often used outdoors/backbone; fibers protected in tubes).
Armored Added mechanical protection (metallic or dielectric armor) for crush/rodent resistance.
DB Direct Burial (construction intended for burial/wet environments; confirm gel/water-block features).
UL Underwriters Laboratories listing/recognition (safety compliance marking).
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