125-μm-Cladding 8-Core Multi-Core Fiber Realizing Ultra-High-Density Cable Suitable for O-Band Short-Reach Optical Interconnects

A 125-μm-cladding 8-core fiber applicable to short-reach transmissions and compatible with conventional components is proposed. An ultra-high-density 12-MCF cable was fabricated with the proposed MCF, and error-free 8-SDM×4-WDM×25-Gb/s (800-Gb/s/fiber) transmission was demonstrated in O-band. OCIS codes: (060.2280) Fiber design and fabrication; (060.2330) Fiber optics communications; (060.4230) Multiplexing.