Specification
| Parameter | Singlemode (SM) | Multimode (MM) |
|---|---|---|
| Connector Type | LC (PC / UPC / APC Options Available) | |
| Fiber Count | 12 Core Bundle | |
| Insertion Loss (Typical) | ≤0.3dB (PC) / ≤0.2dB (UPC) / ≤0.3dB (APC) | ≤0.2dB (PC) |
| Return Loss | ≥45dB (PC) / ≥50dB (UPC) / ≥60dB (APC) | ≥30dB (PC) |
| Operating Wavelength | 1310nm, 1550nm | |
| Exchangeability | ≤0.2dB | |
| Vibration | ≤0.2dB | |
| Operating Temperature | -40°C to +75°C | |
| Storage Temperature | -45°C to +85°C | |
| Cable Diameter Options | φ3.0mm, φ2.0mm, φ0.9mm | |
What is an LC 12-Core Bundle Fiber Patch Cord?
An LC 12-core bundle fiber patch cord is a multi-fiber cable assembly that integrates twelve optical fibers into a single bundled structure, with each fiber terminated by an LC connector at both ends. This configuration allows network installers to deploy 12 optical paths simultaneously while maintaining organized cable routing in dense patching environments.
The bundled design addresses a practical challenge in data centers, telecom rooms, and enterprise networks: when multiple fiber connections are required between the same two endpoints, running individual patch cords creates cable congestion and complicates future maintenance. By consolidating 12 fibers into one manageable assembly, this patch cord reduces physical clutter while providing the same connectivity that would otherwise require multiple separate cables.
LC connectors were selected for this bundle due to their compact 1.25mm ferrule diameter-half the size of SC connectors-making them particularly suitable for high-density applications where panel space is limited, such as SFP, XFP, and SFP+ transceiver ports.
Features
Compact Form Factor for High-Density Fiber Installations
The LC connector's 1.25mm ferrule diameter enables significantly higher port density compared to larger connector types. When combined with the 12-core bundle structure, this patch cord delivers concentrated connectivity in a minimal footprint-ideal for environments where rack space commands a premium, such as colocation facilities and enterprise data centers running at capacity.
Low Insertion Loss for Signal Integrity
Each LC termination in the bundle achieves typical insertion loss of ≤0.2dB (UPC polish) or ≤0.3dB (PC/APC polish), ensuring that optical signals traverse the connection point with minimal attenuation. For networks running multiple fiber hops or operating near link budget limits, this consistent low-loss performance across all 12 fibers helps maintain reliable data transmission.
High Return Loss Minimizes Back-Reflection
Return loss ratings of ≥45dB (PC), ≥50dB (UPC), or ≥60dB (APC) indicate that very little light reflects back toward the source when signals enter each connector. Reduced back-reflection is particularly important for laser-based singlemode systems where reflected light can destabilize transmitter performance or introduce bit errors in high-speed links.
Excellent Repeatability and Exchangeability
With exchangeability rated at ≤0.2dB, these connectors maintain consistent optical performance even after repeated mating cycles. Network technicians can disconnect and reconnect fibers during troubleshooting, moves, or equipment upgrades without significant degradation in insertion loss-a critical factor for environments requiring frequent reconfiguration.
Stable Performance Under Environmental Stress
Rated for operation from -40°C to +75°C and storage from -45°C to +85°C, this bundle withstands temperature variations encountered in non-climate-controlled telecom shelters, outdoor cabinets, and industrial settings. Vibration-induced loss remains within ≤0.2dB, ensuring connections stay reliable in environments subject to mechanical disturbance.
Singlemode and Multimode Options
The LC 12-core bundle is available in both singlemode (OS1/OS2) and multimode (OM1/OM2/OM3/OM4) fiber types. Singlemode assemblies suit long-haul backbone links and metro networks, while multimode versions serve shorter-reach applications in campus backbones and data center interconnects where cost-effective LED or VCSEL light sources are preferred.
Applications
Data Center Structured Cabling
LC 12-core bundle cables streamline patching between high-density fiber panels, spine switches, and storage arrays. The consolidated structure reduces cable tray congestion in overhead pathways and under-floor plenums, while the compact LC interface matches the port density requirements of modern 10G/25G/40G transceivers.
FTTX and LAN Distribution Networks
In fiber-to-the-x deployments and enterprise local area networks, this bundle configuration simplifies connections from optical line terminals to distribution frames. Installers can route 12 subscriber or workstation links through a single cable run, accelerating deployment schedules while keeping main distribution frames organized.
Optical Fiber CATV Systems
Cable television headends and hub sites use multi-fiber assemblies to distribute broadcast signals across multiple optical nodes. The LC 12-core bundle provides a clean solution for connecting CATV transmitters to fiber distribution panels, with the APC polish option available for systems requiring enhanced return loss to minimize optical noise in analog video transmission.
Telecommunication Central Offices
Telecom operators rely on bundled fiber assemblies to interconnect optical transport equipment, multiplexers, and cross-connect systems within central offices. The 12-fiber configuration aligns with common tributary counts in SONET/SDH and OTN architectures, while the wide operating temperature range accommodates installations in unmanned remote sites.
Testing and Measurement Environments
Test labs and manufacturing quality control stations frequently reconfigure fiber connections between instruments. The excellent repeatability of this bundle allows technicians to plug and unplug connectors during test sequences without introducing measurement uncertainty from connector-induced loss variations.
OEM/ODM Service for LC 12-Core Bundle Cables
For projects requiring specifications beyond standard offerings, our OEM/ODM service accommodates custom requirements. Whether you need specific cable lengths, particular jacket materials for riser or plenum installations, or assemblies configured for your proprietary labeling scheme, our engineering team can work with your specifications to produce LC 12-core bundle cables that integrate seamlessly into your installation workflow.
To discuss custom configurations for your LC-LC multi-fiber patch cord requirements, contact us with your project details.
FAQ
Q: What are the advantages of using a 12-core bundle instead of individual patch cords?
A: A bundled assembly consolidates 12 fiber paths into one physical cable, reducing the number of individual cords that need to be routed, labeled, and managed. This simplifies installation, improves cable organization in dense racks, and makes future troubleshooting faster since all 12 connections follow the same physical path.
Q: How do I choose between PC, UPC, and APC polish types?
A: PC (Physical Contact) provides basic performance suitable for general multimode applications. UPC (Ultra Physical Contact) offers improved return loss (≥50dB) for singlemode networks where back-reflection matters. APC (Angled Physical Contact) delivers the highest return loss (≥60dB) and is required for certain analog video, CATV, and PON systems where even small reflections can degrade signal quality.
Q: Can this bundle cable be used with SFP+ transceivers?
A: Yes. The LC connector's compact 1.25mm ferrule is the standard interface for SFP, SFP+, and SFP28 transceivers. Each fiber in the bundle terminates with an LC connector that mates directly with these transceiver modules.
Q: What is the difference between singlemode and multimode versions?
A: Singlemode (SM) bundles use 9/125μm fiber optimized for long-distance transmission at 1310nm and 1550nm wavelengths-typically spanning several kilometers. Multimode (MM) bundles use 50/125μm or 62.5/125μm fiber for shorter distances, commonly within buildings or campus environments, using lower-cost LED or VCSEL light sources.
Q: How does the exchangeability specification affect real-world use?
A: The ≤0.2dB exchangeability rating means that if you disconnect a connector and reconnect it-or swap it with another connector of the same specification-the insertion loss remains consistent within this tolerance. This is important for maintenance scenarios where technicians need to temporarily disconnect fibers for testing or equipment replacement.
Q: What cable diameter should I select?
A: The φ3.0mm option provides more robust protection and is commonly used for patch panel connections. The φ2.0mm diameter offers a balance between protection and flexibility. The φ0.9mm tight-buffered option is typically used inside equipment or for pigtail applications where minimal bulk is required.
Q: Is this product suitable for outdoor installations?
A: The operating temperature range of -40°C to +75°C accommodates many outdoor scenarios. However, for direct outdoor exposure, verify that the cable jacket material provides adequate UV resistance and moisture protection, or use appropriate conduit and enclosures to protect the assembly from environmental elements.
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