E fiber optics combine ultra-low loss and large effective area characteristics, significantly improving the performance of long-distance transmission in networks operating at 100G, 200G, 400G, and future higher speeds. Sumitomo Electric Industries, Ltd. GL FIBER's FarBand® Ultra delivers both advantages in a single fiber, combining industry-leading low attenuation with an optimized large effective area. The G. E is structurally designed to handle the high entry power required for ultra-long terrestrial and submarine distances. Proven Export Quality: We have a verified track record of exporting finished G. The fiber complies. The superior attributes of TXF ® optical fiber, compliant to ITU-T G. This allows long-haul networks with TXF fiber to be.