OM3/OM4/OM5 multimode fiber for data center and building backbones.
Free, no-obligation walkthrough. Licensed C-10 / C-7 (CSLB #992009). 28+ years, California & nationwide.
Multimode Fiber from Access Cabling delivers enterprise-grade multimode fiber engineered by a licensed low-voltage contractor with 28+ years serving California and nationwide clients. Our BICSI-trained technicians design, install, terminate, test and certify every run to TIA/EIA standards so your infrastructure supports current bandwidth demands and future growth.
Commercial-grade installation, certified performance, and infrastructure built to last 25+ years.
A repeatable, engineered process — refined over 28 years and thousands of sites.
Free on-site survey and needs assessment
Engineered design with rack elevations and pathway plans
Scheduled installation with minimal business disruption
Termination, testing, labeling and documentation
Fluke certification and as-built drawings delivered
Every multimode fiber follows TIA-568, TIA-606 labeling, NEC 800 and applicable manufacturer specifications. Fluke DSX Versiv certification and full as-built documentation are delivered at project close.
Local crews dispatched daily from five California offices. Multi-site rollouts across all 50 states.
Jump straight to the multimode fiber page for your market — each city page lists the local office, phone number and recent projects.
Multimode fiber installation and certification across California — OM3, OM4, and OM5 for short-reach data-center, backbone, and horizontal applications. Access Cabling specifies the right multimode grade for your speed and distance, fusion-splices pigtails, terminates MTP/LC assemblies, and delivers Tier 1 + Tier 2 certification with connector inspection. Licensed C-10/C-7 (CSLB #992009), BICSI-trained crews.
OM3 (aqua): 10G to 300m, 40/100G SR4 to 100m — legacy short-reach data center. OM4 (aqua): 10G to 400m, 40/100G SR4 to 150m — current standard for new short-reach installs. OM5 (lime): supports SWDM4 (short-wave WDM) for 40/100G on 2 fibers instead of 8 — future-proof for row-to-row and high-density data-center. Never install OM1 or OM2 new; they are end-of-life.
Sensible: short row-to-row runs inside a data center (under 100-150m), spine-to-leaf where VCSEL optic savings x fiber count is meaningful, and legacy environments where existing MM gear is being kept. Not sensible: any new campus backbone, any run over 150m, any application that might upgrade past 100G, or any environment where per-strand cost dominates optic cost.
For 40G-SR4 and 100G-SR4 the parallel-optic breakout means every uplink uses 8 fibers — density killer with LC-duplex. MTP-12 or MTP-24 pre-terminated trunks with cassettes at both ends are the standard. Guaranteed loss budget, factory-polish geometry, and no field polish variability.
Multimode loss testing is famously variable if launch conditions aren't controlled. We use encircled-flux-compliant CertiFiber Pro launch cords per TIA-526-14-B on every multimode certification — repeatable, accurate, and required for warranty.
Share your scope — square footage, drop or device count, and timeline — and a senior estimator returns a written, itemized proposal within 48 hours. Free site survey, no obligation.
Vendor-agnostic. We specify best-in-class components for each project — copper, fiber, racks, power, wireless and access control from the industry's leading manufacturers.
Read our guide to the cabling brands behind the world's data centers
Brand references reflect products Access Cabling has installed on commercial projects. Trademarks are the property of their respective owners.
OM5 for high-density data-center rows where SWDM4 lets you run 40/100G on 2 fibers instead of 8 (real strand-count savings on 288+ fiber trunks). OM4 for everything else — it supports every current SR-family optic and costs less.
Not recommended. Even OM4 tops out at 150m for 40/100G-SR4 and 400m for 10G-SR. Any inter-building run should be single-mode unless the buildings are within a data-center-scale distance.
Launch conditions. Overfilled launches (from LEDs or non-EF-compliant sources) produce loss readings that vary by up to 40%. Encircled-flux-compliant sources produce repeatable measurements that match the standard. We test every MM install EF-compliant.
Physically yes, but you get the reach of the lowest-grade fiber in the chain. Standardize per link — pigtails, patches, and horizontal all the same grade.
MM cable is comparable to SM today. The real difference is optics: SR (multimode) transceivers are still cheaper than LR (single-mode) at 10G/25G/100G. For short reaches inside a data-center row, multimode saves on the optic side.
Yes — factory MTP-12 and MTP-24 trunks with LC-duplex cassettes at both ends. Standard method for data-center row cabling and MDF cross-connects.
Fluke CertiFiber Pro with EF-compliant launch cords for Tier 1 dual-wavelength loss at 850 and 1300 nm, plus Fluke OptiFiber Pro OTDR for Tier 2 event mapping. Full report with pass/fail per link.
Keep OM3 if you're running 10G SR or 40G SR4 within 100m. Upgrade to OM4 if you're consolidating or planning 100G-SR4 beyond 100m. Any new install should default to OM4 minimum.
Multimode Fiber pricing depends on drop count, cable type, pathway complexity, and building conditions. Most commercial projects range from $150 to $350 per drop installed. Request a free site survey for an itemized quote.
Yes. Access Cabling is headquartered in California with a nationwide technician network for multi-site rollouts across all 50 states.
Every installation is Fluke-tested and certified. Structured cabling installs carry manufacturer warranties of up to 25 years through our Panduit, CommScope, Leviton and Belden partner relationships.
Single-mode and multimode fiber installation, termination and testing.
Emergency fiber optic repair, splicing and restoration 24/7.
Mechanical and fusion fiber splicing with OTDR verification.
Fusion splicing services with sub-0.05 dB average loss.
OTDR, insertion loss and end-face inspection for every strand.
Tier 1 and Tier 2 fiber certification with full documentation.
28 years, thousands of sites, one accountable contractor. Get a free site survey and an itemized quote in 48 hours.
