Its function is to split two incident light beams from two individual input fiber cables into sixty-four light beams and transmit them through sixty-four individual output fiber cables. This division allows for the simultaneous analysis or utilization of the light's properties along two separate paths. Typically, a beam splitter is made of a transparent substrate, such as glass or fused silica, with a thin, precisely. Beamsplitters are optical components used to split incident light at a designated ratio into two separate beams. It's sensitive to both intensity and frequency. Together, they decide just how accurately an instrument captures those unique infrared “fingerprints” from different substances.