FBT splitters are more sensitive to fiber bending and environmental expansion, particularly under uneven thermal conditions. Their performance depends on optical symmetry, waveguide integrity, and mechanical stability of. Optical splitters in the outside plant (OSP) are used mostly in passive optical networks (PONs) for fiber-to-the-user (FTTx) networks, and are often overlooked as failure points. Key issues include: · Signal Attenuation: The loss of signal strength as it travels through the fiber can lead to poor quality communication. These are known as passive optical splitters, and they perform the function. While fiber has many advantages, there are also some disadvantages in fiber optic transmission that shouldn't be overlooked. This loss, measured in decibels.