Glory Optical's GL-MCFC series high-density sub-unit branch multi-core fiber optic cable is engineered for indoor backbone and main riser distribution in large commercial buildings, campuses, and enterprise networks. With fiber counts of 36, 48, 72, and 96 cores organized into discrete 12-fiber sub-units, this cable supports structured floor-level branching from a single backbone run - minimizing conduit usage while preserving the full fiber count all the way to the primary distribution point.
Color coding per TIA-598/IEC 60304 ensures each fiber is uniquely identifiable at any branch or termination point, significantly reducing the time and risk associated with field splicing and labeling. Available in OM3, OM4, and OM5 multimode variants for bandwidth-intensive short and medium distance links, and in OS1/OS2 single-mode for longer backbone runs, the GL-MCFC series can be specified precisely to match the transmission requirements of each segment.
PVC and LSZH jacket options address both standard indoor building codes and the more demanding requirements of plenum spaces, air-handling zones, and public venues where low smoke emission and halogen-free combustion are mandated.

Technical Specifications
| Parameter | Specification |
|---|---|
| Product Model | GL-MCFC Series (36 / 48 / 72 / 96 Core) |
| Fiber Type | OM3 / OM4 / OM5 Multimode | OS1 / OS2 Single-mode |
| Core Count | 36 / 48 / 72 / 96 (custom available on request) |
| Fibers Per Sub-unit | 12 (TIA-598 / IEC 60304 color-coded) |
| Sub-unit Outer Diameter | Approx. 3.0 mm |
| Outer Diameter (OD) | 13.8 mm (36-core) – 28.2 mm (96-core) |
| Outer Jacket Material | PVC (standard) / LSZH (low smoke zero halogen) |
| Filling Material | None |
| Long-term Tensile Force | 400 N |
| Short-term Tensile Force | 1,300 N |
| Dynamic Bend Radius (installation) | ≥ 15 × cable outer diameter |
| Static Bend Radius (installed) | ≥ 10 × cable outer diameter |
| Working Temperature | -30℃ to +80℃ |
| Storage Temperature | -40℃ to +80℃ |
| Net Weight | 130 – 650 kg/km (varies by core count) |
| Flammability (LSZH option) | IEC 60332-3-24, Category C compliant |
| Smoke Emission (LSZH option) | IEC 61034 compliant |
Application Scenarios
- Enterprise Building Backbone Distribution. In large commercial office buildings, the GL-MCFC series provides the high-density backbone link between the main equipment room (MER) and telecommunications rooms (TRs) on each floor. The sub-unit branch structure allows targeted sub-units to be routed to floor-level patch panels without disturbing the remaining backbone - significantly reducing installation time and eliminating the need to re-enter or re-terminate an undisturbed portion of the cable.
- Data Center Inter-Floor and High-Density Zone Cabling. For intra-building data center environments where fiber counts and organized routing are non-negotiable, the GL-MCFC series delivers OM3/OM4/OM5 multimode support for direct integration with 10G, 25G, 40G, and 100G active equipment. The compact sub-unit profile minimizes footprint inside congested cable trays and riser shafts, keeping pathways accessible for future additions.
- Campus and Multi-Segment Network Infrastructure. For campus deployments requiring fiber interconnects across multiple floors, wings, or adjacent buildings, single-mode (OS1/OS2) configurations of the GL-MCFC series support transmission distances well beyond the reach of multimode fiber, while the identical sub-unit branch architecture keeps field termination consistent and manageable across the entire project.
Features
The sub-unit branch architecture is the defining characteristic of the GL-MCFC series. Each cable contains multiple discrete sub-units, each housing exactly 12 color-coded fibers in a thin secondary buffer tube. This internal organization allows an installer to peel off and route a single sub-unit to a floor-level distribution panel while the remaining sub-units continue undisturbed along the main backbone route. The result is a measurable reduction in installation complexity and a lower margin for error when working with high fiber counts in congested riser shafts.
Multimode and single-mode versatility ensures that the GL-MCFC series can be specified to match the exact transmission requirements of any indoor backbone segment. OM3 delivers 10G connectivity up to 300 m; OM4 extends that reach to 550 m and improves 40G/100G performance; OM5 (wideband multimode) supports shortwave wavelength division multiplexing (SWDM) for 100G and beyond using a single fiber pair. OS1/OS2 single-mode options provide effectively unlimited backbone reach for large campus deployments, all within the same sub-unit branch cable format.
Fire-compliant jacket options address the full range of indoor installation environments. The standard PVC jacket satisfies common building code requirements and is a cost-effective choice for most commercial riser applications. The LSZH jacket - certified to IEC 60332-3-24 (Cat. C) for limited flame propagation and IEC 61034 for low smoke density - is the recommended choice for plenum spaces, server rooms, tunnels, transportation hubs, and any environment where toxic halogenic gases or heavy smoke from cable combustion would endanger personnel or equipment.
Robust mechanical performance underpins the cable's reliability during both installation and long-term service. A rated long-term tensile load of 400 N and a short-term installation peak of 1,300 N accommodate the demands of pulling through long conduit runs. A static minimum bend radius of 10× and a dynamic minimum of 15× the cable's outer diameter protect fiber integrity throughout the installation process and over the lifetime of the link.
Space-efficient high-density profiling keeps the outer diameter within a range of 13.8 mm (36-core) to 28.2 mm (96-core), delivering a high fiber count in a compact cross-section that makes efficient use of cable tray and conduit space. For projects requiring fiber counts beyond 96 cores, non-standard sub-unit configurations, specific jacket formulations, or custom branding, Glory Optical's OEM/ODM program supports fully bespoke designs with engineering consultation and formal acceptance testing.
Questions & Answers

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We confidently back all our products with a 3-year warranty. Our specific service policy is: within one year for quality issues, we take full responsibility for returns; within two years, for replacements; and within three years, for repairs.
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