INTRODUCTION TO HOLLOW CORE FIBER

Fiber optic technology is evolving from the "1.0 era," represented by traditional silica fibers, to the "2.0 era," characterized by hollow-core fibers. Traditional silica fibers are facing a series of challenges due to material limitations, such as the "channel capacity crisis," "high-power laser damage," and "performance degradation under irradiation." Hollow-core fibers, using air as the guiding medium, provide an ideal environment for optical wave transmission with low nonlinearity, low dispersion, low loss, and low latency. This technology offers revolutionary breakthroughs for applications in fiber-optic communication, lasers, nonlinear optics, quantum technology, and sensing.

 

Ultra-low loss

 

The loss of hollow-core fibers has reached the level of <0.11 dB/km(OFC 2024 Th4A.8), surpassing the loss levels of any fiber made from current materials. This significantly reduces the number of amplifiers and transceiver modules needed, providing a new solution for long-distance transmission.

 

Low dispersion

 

Hollow-core fibers exhibit near-zero dispersion values and dispersion flatness, which can significantly reduce DSP complexity, simplify receiver architecture, and lower system costs and power consumption.

 

 

Ultra-low Latency

 

Compared to traditional silica fibers, hollow-core fibers offer a latency improvement of over 1.5 μs/km, bringing new vitality to applications in finance, AI clusters, and other fields.

 

 

Ultra-low nonlinear effect

 

The nonlinear coefficient of hollow-core fibers is three orders of magnitude lower than that of traditional solid-core fibers. This enables high-fidelity, distortion-free transmission over long distances, providing an effective solution to the nonlinear shannon limit issue.

 

 

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