Our Fibers. One Cable. Zero Compromise.
MCF Multi-Core Fiber — 75% less cable volume for AI backbone density. LC-terminated patch cords and trunk cables production-ready; FIFO fan-out in development.
4-Core
75% Volume Reduction
LC/SC Breakout
75% Less Cable Volume
Multi-Core Fiber packs 4 independent optical paths into a single cladding. Same bandwidth, one-fourth the physical space. Ideal for retrofitting dense AI backbones where conduit fill and underfloor pathways are already maxed out.
MCF Backbone, Single-Core Hardware
Deploy MCF as your backbone infrastructure now. Break out into standard LC/SC assemblies that plug directly into existing 400GBASE-DR4/FR4 transceivers and switches. When MCF-native hardware arrives, your cable plant is already future-proofed.
Factory-Locked Rotational Alignment
MCF deployment fails without perfect rotational alignment between cores. Each assembly is precision-aligned to ≤0.5° typical (≤1° max) and permanently locked. Field technicians do not need specialized MCF splicing equipment or rotational microscopes.
800G MCF Transceivers Are Shipping
The transceiver ecosystem for MCF is no longer theoretical. Leading vendors have demonstrated and shipped 800G optical transceivers that connect directly to MCF without external FIFO devices:
Eoptolink
Industry-first 800G DR8 MCF transceiver, winner of the 2026 Lightwave Innovation Award (5.0 score). Direct MCF connectivity with embedded FIFO micro-assembly.
Hyper Photonix
800G MCF transceiver using proprietary Hyper Silicon™ technology, demonstrated live at OFC 2025 with Fujikura MCF fiber.
These modules eliminate external fan-in/fan-out devices, simplifying deployment and validating the MCF pathway for AI cluster backbones.
Product Status
LC MCF Patch Cords & Trunk Cables — Production Ready
- LC and SC connector termination on 4-core MCF
- Patch cords and trunk cables available for order
- Standard breakout to single-fiber connectors
- Compatible with existing 400G/800G transceiver ports
MCF FIFO Fan-Out Device — Development Stage
- Pilot samples available for evaluation
- 4-core MCF input to standard LC/SC output
- Factory-aligned, sealed assembly
- Contact engineering for sample availability and roadmap
Product Status
| Parameter | Specification |
|---|---|
| Insertion Loss (IL) | ≤0.5 dB max, ≤0.3 dB typical |
| Return Loss (RL) | ≤-50 dB |
| Channel Crosstalk | ≤-50 dB |
| Rotational Alignment | ≤0.5° typical, ≤1° max |
| Fiber Count | 4-core |
| Breakout Connectors | LC, SC |
| Packaging — Round | 5.5 mm × 50 mm or 65 mm |
| Packaging — Rectangular | 65 mm × 12 mm × 9 mm |
| Operating Temperature | -40°C to +70°C |
Deployment Scenarios
Training Cluster Backbones
Run 400G/800G links between GPU racks without adding cable management chaos. MCF delivers 4× the fiber count in the same physical pathway. The factory-aligned breakout integrates seamlessly with existing InfiniBand or Ethernet switches.
Campus and Metro DCI
Underground ducts and aerial pathways face physical constraints. MCF quadruples capacity per fiber strand without digging new trenches. Deploy between buildings now; upgrade to native MCF transceivers later without touching the cable plant.
Physical-Layer Security
Ultra-low inter-core crosstalk (≤-50 dB) enables quantum key distribution networks where separate cores carry data and quantum encryption keys without interference. One infrastructure, dual-purpose capability.
Standards Alignment
Evaluate MCF in Your Infrastructure
Request LC-terminated MCF patch cord and trunk cable samples for production deployment. MCF FIFO pilot samples available for development-stage evaluation. Contact our engineering team for availability and configuration guidance.