By Diana Nottingham, Fiber Optics Product Line Manager at Infinite Electronics
Network builds don't wait. Whether you're expanding a data center, upgrading a campus backbone, or wiring a factory floor, fiber cable availability can be what makes or breaks a project timeline. That's exactly why L-com's new fiber optic cable assemblies collection matters — it's built around the reality of how networks actually get deployed.
The new lineup covers single-mode OS2 and multi-mode OM1, OM3, OM4, and OM5 cables, available as simplex, duplex, and multi-fiber patch cables. Everything is in-stock and ready to ship. Custom lengths and configurations are available on a fast turnaround when standard options don't fit the job.
Browse L-com's full fiber optic cable assemblies collection →
Key Takeaways
- L-com now stocks single-mode OS2 and multi-mode OM1, OM3, OM4, and OM5 fiber optic cable assemblies in one collection.
- Fiber patch cables are available in simplex, duplex, and multi-fiber configurations to match a range of connectivity needs.
- In-stock availability means no waiting — assemblies ship fast for time-sensitive network deployments.
- Custom fiber optic cable assemblies are available with quick turnaround for precise rack-to-rack and building-to-building runs.
- Jacket options include LSZH, OFNR, and OFNP to meet fire safety and building code requirements.
- Compatible connectors include SC, LC, ST, and FC — covering the widest range of switches, storage gear, and enterprise equipment.
- Factory-tested assemblies deliver consistent performance across data centers, enterprise networks, and industrial environments.
Choosing the Right Fiber: Single-Mode vs. Multi-Mode Fiber Optic Cable
The first decision in any fiber project comes down to distance.
Single-mode OS2 fiber optic cables usesa narrow 9-micron core and is built for long-haul runs — inter-building links, campus backbones, and any application where you're pushing signal hundreds of meters or more. OS2 minimizes signal loss over distance, making it the go-to for outside plant runs and long-distance indoor infrastructure.
Multi-mode fiber optic cables use a wider 50 or 62.5-micron core designed for shorter distances within buildings or across rack environments. Here's how the grades break down:
- OM1 (62.5-micron): Legacy installations and lower-bandwidth applications, typically paired with LED light sources.
- OM3 (50-micron): Supports 10 Gbps up to 300 meters. A solid, widely deployed choice for standard data center and enterprise applications.
- OM4 fiber optic cable (50-micron): Supports 10 Gbps up to 550 meters and 40/100 Gbps at shorter distances. Higher bandwidth density than OM3 and the current standard for most new data center builds.
- OM5 (50-micron): The newest multi-mode standard, built for wavelength-division multiplexing (WDM). The right call for high-density fiber builds that need to scale to higher speeds.
Not sure which spec fits your application?
Talk to L-com's technical team for product and application guidance →
Who These Fiber Optic Cable Assemblies Are Built For
Data Centers and Cloud Infrastructure
In dense data center environments, fiber patch cable spec and availability matter more than people realize until a project is stalled. A week's delay waiting on a custom cable length holds up a rack deployment. Poor-quality assemblies create intermittent performance issues that are painful to trace. And sourcing the right connector type for mixed-vendor environments adds friction that compounds across a build.
L-com's data center fiber optic solutions address these directly:
- Custom fiber optic cable assemblies in precise lengths for rack-to-rack and server-to-switch runs — no coiling excess cable in tight 1U spaces.
- Quick-turn availability to support urgent data center expansions and upgrades.
- Factory-tested performance so you're not troubleshooting bad connections after installation.
- Broad connector compatibility — SC, LC, ST, and FC — for environments with multiple switch and storage vendors.
Common applications: server-to-switch links, rack-to-rack interconnects, SAN connectivity, and data center fiber optic cable management across dense deployments.
Shop fiber patch cables for data center builds →
Enterprise IT and Campus Networks
Building-to-building fiber runs and campus backbone upgrades require cables that are sized right and arrive on schedule. Too-short cables don't reach. Too-long cables create management headaches in network closets. Lead times that stretch weeks out push project timelines past budget windows.
L-com's enterprise-focused fiber optic cable assemblies help teams avoid those scenarios:
- Custom-length single mode fiber patch cables and multimode fiber patch cables built to the actual span of your run, not approximate stock lengths.
- Fast turnaround so cable availability doesn't become the bottleneck in a phased upgrade.
- Reliable backbone connectivity for multi-building campus links that need to stay up.
- Technical support for product selection when planning complex multi-site upgrades.
Common applications: building-to-building backbone links, campus connectivity, network closet interconnects, and office infrastructure refreshes.
Industrial and Manufacturing Networks
Factory floors are hard on network equipment. EMI from motors and equipment, long cable runs across large facilities, and environments where jacket durability is a baseline requirement — not an edge case. Fiber handles EMI inherently, which is one reason it's often the right call in manufacturing environments.
L-com's pre-terminated fiber optic cable assemblies are available with jacket ratings suited for industrial infrastructure:
- LSZH fiber cable for enclosed spaces where fire safety is a priority.
- OFNR-rated cables for riser runs between floors.
- Long-distance single-mode OS2 fiber optic cable for facility-wide backbone links.
- Technical expertise from a team that understands industrial networking requirements.
Common applications: factory automation connectivity, industrial Ethernet backbones, long-distance facility networking, and EMI-resistant communication links.
Connector Compatibility: LC, SC, ST, and FC Fiber Patch Cables
One of the more common friction points in fiber builds is connector mismatch — especially in mixed-vendor environments with legacy and new gear running side by side. L-com's fiber optic cable assemblies are available across all four major connector types:
- LC fiber patch cable — The dominant connector in modern data center and enterprise gear. High-density, small form factor, widely used on SFP+ and QSFP ports. Available in LC-to-LC and LC-to-SC configurations.
- SC fiber patch cable — Square push-pull connector, common in telecom and older enterprise equipment. SC-to-SC and SC-to-LC options available.
- ST fiber patch cable — Bayonet-style twist-lock connector, still found in legacy campus and industrial installations.
- FC fiber patch cable — Threaded connector common in test equipment and single-mode long-distance applications.
Find the right fiber optic patch cable by connector type →
Jacket Ratings: LSZH, OFNR, and OFNP Explained
Jacket selection isn't just about durability. It's about code compliance and what happens in a fire. L-com's new fiber optic cable assemblies cover three key jacket ratings:
LSZH (Low Smoke Zero Halogen) Produces minimal smoke and zero halogen gases when exposed to fire. Required in many data centers, telecom rooms, and public-access buildings where smoke toxicity is a safety concern. Standard for enclosed spaces with high occupancy.
OFNR (Optical Fiber Nonconductive Riser) Flame-retardant, rated for vertical runs between floors in building risers. The minimum requirement for indoor fiber routed between building levels.
OFNP (Optical Fiber Nonconductive Plenum) The highest flame-retardant rating under NEC standards. Required for fiber running through plenum spaces — the air-handling areas above drop ceilings and below raised floors. If you're running cable through HVAC airspace, this is the spec you need.
Recommendations
Select your fiber type based on actual distance requirements. For runs under 400 meters in a data center or enterprise environment, OM4 or OM5 multimode fiber optic cable covers current speed requirements and supports higher bandwidth as the network grows. For campus backbones or inter-building links beyond 400 meters, single-mode OS2 fiber optic cable is the more reliable long-term choice.
On jacket selection, match the rating to the specific zone where the cable runs. Plenum spaces require OFNP. Riser runs need at minimum OFNR. Enclosed spaces with high occupancy warrant LSZH regardless of floor placement. The cost difference between jacket grades is minor compared to the cost of a code-compliance retrofit.
The right fiber optic cable assembly doesn't just move data. It keeps a project on schedule, fits the physical environment, meets building code requirements, and doesn't become a support call three months later.
L-com's new fiber optic cable assemblies cover the full range of single-mode and multimode— in-stock standard fiber patch cables, custom lengths built to spec, and the connector and jacket options to match any installation. Connect with L-com's technical specialists to discuss your requirements or to request a quote.
FAQ
1. What is the difference between single-mode and multimode fiber optic cable? Single-mode fiber optic cable (OS2) uses a 9-micron core for long-distance runs — hundreds of meters to several kilometers — with minimal signal loss. Multimode fiber optic cable (OM3, OM4, OM5) uses a wider 50-micron core for high-speed short-distance runs, typically within buildings or between racks. The right choice depends on your span distance and speed requirements.
2. Can I order custom fiber optic cable assemblies from L-com? Yes. Custom fiber optic cable assemblies are available with fast turnaround times. This is particularly useful for precise rack-to-rack data center runs, server-to-switch links, or campus backbone segments where standard stocked lengths don't match the actual span.
3. Which connector types are available on L-com's fiber patch cables? L-com's fiber optic cable assemblies come in LC, SC, ST, and FC connector types — including LC-to-LC, LC-to-SC, and ST-to-ST configurations. This covers the most widely used interfaces across data center switches, storage equipment, and enterprise networking gear.
4. What jacket rating do I need for a plenum space fiber installation? OFNP (Optical Fiber Nonconductive Plenum) is required for installations in plenum airspaces under NEC standards. OFNR is the minimum for riser runs between floors. LSZH fiber cable is appropriate for enclosed spaces where fire safety and smoke toxicity are primary concerns.
5. Does L-com offer technical support for fiber optic product selection? Yes. L-com's technical team is available to help with product selection and application guidance — whether you're specifying a single mode fiber patch cable for a long campus run or selecting multimode fiber patch cables for a dense data center deployment.