The two pigtails can be fused together

Yes, two fiber optic pigtails can be fused together using fusion splicing to create a seamless, low-loss connection.

Fiber optic pigtails are short lengths of optical fiber with a factory-installed connector on one end and a bare fiber on the other, designed specifically for splicing to incoming fiber cables in the field . The bare ends of two pigtails can be joined using fusion splicing, which involves aligning the cleaved fiber ends and applying a precision electric arc to melt and fuse the glass together, forming a continuous optical path . This method produces a nearly seamless joint with very low insertion loss (typically 0.01–0.05 dB) and minimal back reflection, making it ideal for high-performance networks . Alternatively, mechanical splicing can be used, where the fiber ends are aligned in a precision sleeve with index-matching gel, clamped in place without heat. While faster and requiring less expensive equipment, mechanical splices generally have higher insertion loss (0.20–0.50 dB) and are less permanent than fusion splices . In practice, fusing two pigtails is often done when extending fiber runs, repairing damaged fibers, or creating custom-length connections. Proper tools, such as a fusion splicer, fiber strippers, and cleaving tools, are essential to ensure a high-quality splice . Once fused, the joint is typically protected in a splice tray or enclosure to maintain mechanical strength and prevent environmental damage . In summary, fusion splicing two pigtails is a standard and reliable method to join fibers, providing a permanent, low-loss connection suitable for data centers, telecom networks, and other fiber optic applications .