In the context of beam splitters, attenuation can occur due to several factors, including absorption, reflection, and scattering. Understanding how beam splitters affect signal attenuation and polarization is essential for optimizing systems in telecommunications, imaging, and laser applications. In the. Fiber optic splitters distribute optical power from one input fiber to multiple output fibers through either fused biconical taper (FBT) coupling or planar lightwave circuit (PLC) waveguide structures. Their performance depends on optical symmetry, waveguide integrity, and mechanical stability of. · Signal Attenuation: The loss of signal strength as it travels through the fiber can lead to poor quality communication. By careful processing, couplers that were bidirectional were made. So a 2:2 coupler would take the signal from one fiber on one side and split it between the two fibers on the.