ST-ST Multimode OM1 Ultra Fiber Cabler
The iFiber Optix ST-ST Multimode OM1 Ultra Fiber Cable delivers seamless connectivity between ST-terminated devices on both ends — providing a direct, high-performance OM1 multimode link between legacy and modern networking equipment that continues to rely on proven ST bayonet-style connectors.
With support for 1 Gbps Ethernet over typical OM1 distances, this cable is ideal for LANs, data centers, telecom systems, and enterprise networks where ST-terminated equipment must interconnect without additional adapter couplers or extra patch cord runs.
ST-ST Multimode OM1 Ultra Fiber Cable
The ST-ST OM1 cable is a duplex assembly terminated with ST connectors on both ends, combining Corning 62.5/125µm multimode optical fiber with a rugged bayonet-style interface for reliable short-range communication. Each ST connector features a 2.5mm ferrule and twist-lock coupling that maintains secure connections in active wiring closets, industrial spaces, and telecom rooms, making it a trusted choice for environments where mechanical stability is critical.
Built on a duplex zipcord construction, this direct ST-to-ST cable eliminates intermediate adapter couplers and extra patch cords — reducing connection points, insertion loss, and cable management complexity wherever ST-terminated equipment needs to be linked over OM1 multimode fiber.
Performance Specifications
All iFiber Optix ST-ST OM1 assemblies are manufactured and tested to meet or exceed the following optical and mechanical performance specifications.
| Insertion Loss | 0.3 dB |
| Typical Insertion Loss | 0.2 dB |
| Return Loss | ≥ 20 dB |
| Mating Durability | <0.2 dB change (500 cycles) |
| Temperature Range | -40°C to +85°C |
| End A Connector | ST/PC (Bayonet Twist-Lock) |
| End B Connector | ST/PC (Bayonet Twist-Lock) |
| Fiber Core / Cladding | 62.5 / 125µm |
| Part Number | i1611-A-XX-2J |
| SPC GR-326 Protrusion | +50 / -100 nm |
Key Features
- Direct ST-to-ST Duplex Connectivity Factory-terminated with ST on both End A and End B — eliminating the adapter couplers and extra patch cords that would otherwise be required to bridge ST-terminated equipment, reducing insertion loss and removing additional mechanical joints from the channel.
- Corning 62.5/125µm OM1 Fiber Built on Corning OM1 multimode glass — the global standard for long-term transmission reliability. The 62.5µm core supports short-range 1 Gbps Ethernet, making this cable ideal for existing OM1 plant in LANs, data centers, and campus environments.
- Rugged Bayonet-Style Interface ST connectors use a 2.5mm ferrule and bayonet twist-lock mechanism that resists vibration and accidental disconnection, providing secure, consistent connections in wiring closets, industrial spaces, and telecom rooms.
- Low Insertion Loss Precision-polished ST connectors deliver ≤ 0.3 dB insertion loss (0.2 dB typical) — ensuring strong, stable signal transmission with minimal degradation across the full duplex OM1 channel under all rated operating conditions.
- Temperature-Tolerant Design Rated for operation from -40°C to +85°C, this assembly maintains optical performance across a wide range of environmental conditions commonly found in equipment rooms and distributed network spaces.
- Durable Long-Term Performance Engineered for 500+ mating cycles with less than 0.2 dB change in insertion loss — ideal for networks that require frequent re-patching, moves, adds, and changes over the life of the infrastructure.
Ideal Applications
ST-ST OM1 cables are deployed wherever ST-terminated switches, patch panels, and network devices must connect across short-distance multimode links.
Legacy Infrastructure Upgrades
Connects ST-terminated legacy switches and equipment directly to ST patch panels and distribution frames — extending the service life of installed infrastructure while delivering immediate connectivity improvements.
Data Centers
Bridges ST-equipped legacy infrastructure within racks and rows — simplifying structured cabling where ST patch fields remain in service during phased migrations to newer connector types.
Local Area Networks
Connects switches, routers, and patch panels in office and campus LANs where both backbone and horizontal cabling segments use ST terminations on OM1 multimode fiber.
Telecom Networks
Used in telecom rooms and central offices to connect ST-terminated distribution frames, multiplexers, and equipment shelves across short-distance multimode links.
Enterprise Networks
Provides robust connectivity across enterprise departments where ST-based workgroup and core switches are linked over existing OM1 multimode plant.
Government & Regulated Facilities
RoHS-compliant construction and GSA contract availability make ST-ST OM1 cables a direct-procurement option for government facilities maintaining ST-based campus and building networks.
How to Configure Your ST-ST OM1 Assembly
Four decisions define your ST-ST OM1 assembly — use this guide to arrive at the right configuration for your deployment.
Confirm Distance & Bandwidth
OM1 supports 1 Gbps over typical short-range runs. If your links require higher bandwidth or extended distances, consider OM3 or OM4 multimode for 10G, or OS2 singlemode for long-haul applications. Confirm your transceiver specifications before finalizing fiber type — mismatched fiber grades cause link failures that are difficult to diagnose in the field.
Verify Connector Requirements
Confirm that both endpoints of your run use ST connectors. If one side uses a different interface (LC, SC, MTRJ), specify a mixed-connector assembly (LC-ST, SC-ST, MTRJ-ST) instead of ST-ST. For existing runs with adapter couplers, a direct ST-ST cross-cable removes the coupler and reduces insertion loss by ~0.3–0.5 dB per removed joint.
Select Length & Jacket
Available in standard lengths from 0.5m to 15m and custom lengths for special routing. PVC (OFNR) for standard equipment rooms and data center environments, plenum (OFNP) for air-handling spaces and above-ceiling runs, LSZH or indoor/outdoor constructions for sites with specific safety or environmental requirements.
Plan for Future Expansion
When planning network growth, consider whether a phased migration away from ST toward LC, SC, or other high-density connector ecosystems is on the roadmap. ST-ST OM1 patch cords are an effective way to maximize existing infrastructure life while you schedule and budget for long-term upgrades.
Why Choose iFiber Optix?
- Quality Assurance Every ST-ST OM1 assembly is manufactured to meet industry performance standards and tested before shipment — ensuring consistent insertion loss, return loss, and mechanical performance across every cable we produce.
- GSA Contract Holder iFiber Optix holds an active GSA contract, making our fiber assemblies directly available to federal, state, and local government agencies without separate procurement processing.
- Custom Configurations Available Custom cable lengths, jacket types (PVC, plenum, LSZH, indoor/outdoor), and bulk quantities available — manufactured to your exact project specifications for seamless integration into ST-based OM1 infrastructure.
- TAA & BABA Compliant Options Trade Agreement Act and Buy American Act compliant configurations available for government and regulated procurement — contact us to confirm compliance for your specific project requirements.
Request Information
Ready to spec ST-ST OM1 cables for your next deployment? Our team can help with custom lengths, jacket selection, bulk pricing, and GSA procurement.