During the International Optical Fiber Communication Exhibition (OFC2025), YOFC., a global leader in the optical communication industry, presented the latest progress of its hollow-core optical fiber technology to the global industry through a special seminar themed "How will future submarine systems look like". In his speech, the company's technical director Roger revealed that YOFC's hollow-core optical fiber has made major breakthroughs in attenuation coefficient, manufacturing length and polarization mode dispersion. The length of a single optical fiber exceeds 20 kilometers, and the minimum attenuation coefficient is as low as 0.05dB/km. This is the optical fiber with the lowest attenuation in the world so far, which is far lower than the attenuation limit of existing solid-core optical fibers.

As a disruptive technology for the next generation of optical communications, hollow-core optical fiber can be transmitted in the air core through a special structural design. In this way, the signal transmission speed of hollow-core optical fiber is about 47% faster than that of conventional optical fiber, and the transmission delay is reduced by about 31%. It has shown great application value in delay-sensitive scenarios such as interconnection between data centers, large AI models, and financial transactions. At the same time, hollow-core optical fiber has extremely low attenuation and nonlinear coefficients, and is expected to break through the capacity bottleneck of existing optical fibers in large-capacity and long-distance systems such as submarine communication networks, long-distance communication trunk transmission, and power communication networks in the future. In his speech, Roger discussed the opportunities and challenges of hollow-core optical fiber in submarine optical cable applications. The simulation and transmission experiment results showed that in future submarine optical communication systems, hollow-core optical fiber has great potential in increasing capacity and reducing latency. At the OF