Recently, Sumitomo Electric of Japan set a new world record for the lowest fiber loss, namely 0.1419dB/km. The so-called loss refers to the attenuation per unit length of the fiber, and the unit is dB/km (decibel/km). As the global demand for communication capacity is growing rapidly, there is an increasing demand for improving the performance of optical communication systems. For such performance improvement, reducing fiber transmission loss is an effective solution. Since the commercialization of ultra low loss fiber in 1988, Sumitomo Electric has been pioneering cutting-edge technologies, including reducing transmission losses. With these technologies, Sumitomo Electric always supplies ultra-low loss fibers with the lowest transmission loss in commercial products. Today, Sumitomo Electric has improved glass fiber and polymer coating technology and successfully reduced the transmission loss at wavelengths of 1560 nm to 0.1419 dB/km, which is the new world record for the lowest fiber loss. Sumitomo Electric said it will continue to develop such technologies to supply the best products and contribute to the expansion of communications capacity, especially across oceanic submarine communications systems.
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