The optical splitter is a passive device to split and combine light in fiber network, especially for PON (passive optical network). It can be made with FBT (fused biconical taper) or PLC (planar lightwave circuit) technology. HI WIN’s HSPL4 is PLC type splitter packed in a 19/21“ front patching shelf with pigtail or adaptor. It provides a robust and simple method for installing these devices into frame. A wide selection of split ratios and connector types ensure long lasting compatibility