Wednesday 12 March 2025
Scientists have made a significant breakthrough in the development of hollow-core fibers, tiny tubes that can transmit light signals over long distances without losing their intensity. These fibers are crucial for many modern technologies, including high-speed internet and telecommunications.
The team behind this achievement has successfully created fibers with cores as wide as 67 micrometers – previously, the largest core size was around 12 micrometers. This increase in core diameter enables these fibers to guide at least 50 spatial modes of light, making them highly multi-mode.
Multi-mode fibers are essential for applications that require high power and low loss, such as industrial laser power delivery. Traditionally, solid-core fibers have been used for these purposes, but they suffer from material-related losses, which can be significant. Hollow-core fibers, on the other hand, use a gas or vacuum core to guide light, reducing these material-related losses.
The researchers achieved this breakthrough by increasing the number of capillaries surrounding the core while maintaining their size and spacing. This design allows for better confinement of the light within the fiber, resulting in lower loss rates.
The team also demonstrated that these fibers can maintain low loss rates even when bent, which is a critical factor for many applications. The fibers’ bend losses were measured to be less than 3 dB per turn for bend radii of 7.5 cm, making them suitable for use in real-world scenarios.
One of the key challenges facing hollow-core fiber development is the need to balance core size with capillary spacing. If the core is too large, it can become difficult to maintain a stable fabrication process. The researchers’ approach addresses this issue by adding more capillaries, allowing for larger core sizes without compromising stability.
The potential applications of these multi-mode hollow-core fibers are vast. They could enable the development of high-power laser systems for industrial processing, medical treatments, and other fields. Additionally, they could improve the efficiency of telecommunications networks, enabling faster data transmission over longer distances.
This achievement is a significant step forward in the development of hollow-core fibers, and it has the potential to revolutionize many industries. By increasing the core diameter and multi-mode capacity of these fibers, researchers have opened up new possibilities for their use in real-world applications.
Cite this article: “Breakthrough in Hollow-Core Fiber Development Enables High-Power Laser Systems and Efficient Telecommunications”, The Science Archive, 2025.
Hollow-Core Fibers, Multi-Mode Fibers, Telecommunications, High-Speed Internet, Laser Power Delivery, Industrial Processing, Medical Treatments, Data Transmission, Fiber Optics, Optical Communication
