Now, researchers in England have created a new type of hollow-core fiber-optic cable that can reduce signal loss and increase propagation speed through the fiber. The researchers have doubled the fiber's glass layers, adding a second ring of nested glass tubes. "Hollow core fiber represents the next revolution in optical networking, offering unprecedented speeds and lower latency that traditional fiber simply cannot match," says Dr. What is hollow core. For decades, optical fibers have relied on a solid glass core to guide light and have formed the backbone of global telecommunications. However, glass imposes a fundamental physical limitation because light travels through it approximately 30 percent slower than through air. Light travels about 50% faster in a hollow core compared to a solid silica core of conventional optical fiber.
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