A groundbreaking study published in Nature Photonics has introduced a major advance in optical fiber technology—a new hollow-core optical fiber that achieves unprecedented low attenuation of 0.091 dB/km at 1,550 nm and maintains attenuation below 0.2 dB/km across an exceptionally wide 66 THz bandwidth. Moreover, this novel fiber enables transmission speeds up to 45 % faster than traditional silica-based fibers.
Technology Breakthrough
Traditional silica-core optical fibers have plateaued in performance: the best achievable minimum attenuation has lingered around 0.14 dB/km, with usable spectral bandwidths limited to 26 THz or below.
The new fiber uses an air-filled core surrounded by a specially engineered glass microstructure, a design referred to as a nested antiresonant nodeless hollow-core fiber (DNANF). This structure dramatically reduces signal-weakening phenomena such as leakage, surface scattering, and microbending, resulting in remarkably low loss across a wide spectral range.
Technical Highlights
Record attenuation: 0.091 dB/km at 1,550 nm.
Ultra-wide bandwidth: Loss remains under 0.2 dB/km across 66 THz—marking a more than twofold increase over conventional fibers.
Speed boost: Data transmission capability improved by approximately 45 % thanks to near-air-speed light propagation.
Future potential: Models suggest even lower losses, possibly reaching 0.01 dB/km, with flexible tuning for new wavelength ranges—expanding possibilities in undersea cables, long-haul terrestrial links, and high-power laser delivery.
Strategic Implications for Industry
Extended transmission lengths without needing repeaters could reduce infrastructure costs and simplify maintenance.
Ultra-low loss at new wavelengths allows optimization for emerging amplifiers and cheaper optical components.
Boosted data speeds support evolving bandwidth-intensive applications such as AI-driven cloud services and 400G/800G network infrastructure.
The research team is optimistic: with improved manufacturing scalability, geometric consistency, and purity, DNANF technology may become the next milestone in optical waveguides, propelling the next generation of telecommunications networks.
Summary: What This Means for FiberMania
A multi-fold improvement over traditional silica-core fiber, this new hollow-core design offers:
Unmatched speed (45% faster),
Lower loss, and
Vast bandwidth advantage.
For FiberMania—a leader in fiber optic solutions—this presents a compelling opportunity to explore new high-speed, long-range product offerings tailored for next-gen network architectures. Incorporating DNANF or similar hollow-core technologies could put your company at the forefront of innovation in data communications.
