Single-mode fibers are designed for long-distance transmission and offer higher bandwidth, making them suitable for expansive surveillance networks. From the fiber core and core size to single mode fiber and multimode fiber cables, each type of optical cable serves a specific purpose depending on transmission distance, network. Choosing between single mode and multimode fiber is a common decision when designing, deploying, or upgrading fiber optic networks. Although both carry data through light signals, they differ significantly in transmission mechanism, bandwidth-distance capability, deployment cost, and typical. Fiber optic technology is a method of transmitting data as pulses of light through thin strands of glass or plastic known as optical fibers.