The 1×2 850nm Single Window Multimode FBT Coupler Splitter With Steel Tube is a high-performance optical power-splitting device designed specifically for 850 nm multimode fiber networks, including short-reach data communication and sensing applications. Built using advanced Fused Biconical Taper (FBT) technology, this splitter ensures stable optical power distribution, low excess loss, accurate coupling ratios, and excellent performance within the 850 nm operating window.