Solution:

Optical Network:

An Optical Network is a communication network used for the exchange of information through an optical fiber cable between one end to another. It is one of the quickest networks used for data communication.

As we already know that data signal through an optical fiber is transmitted in the form of light pulses. So, optical networks are used to have optical signal transmission.

Elements of optical network:

An optical network is composed of the following elements:

Stations:

Stations in an optical network serve as the source and destination of the information being transmitted and received. Stations are those devices that are used by the users of the network. For example, a computer or any other telecommunication device.

Trunk:

A trunk is a transmission line i.e., an optical fiber cable to transmit the optical signal. A network is composed of one or multiple trunks for signal transmission over a large distance.

Node:

The node is nothing but acts as a hub for multiple transmission lines inside the network. In case of a single transmission line, an optical network does not require nodes, as in this case stations at both ends can be directly connected to the fiber cables.

Topology:

When multiple fiber cables are employed in an optical network, then these are connected through nodes. But how the multiple nodes are connected denotes the topology of the network.

Router:

A router is placed inside an optical network that provides a suitable path for signal transmission.