What are the main elements of an optical transmitter?

An optical transmitter is designed to convert electrical signals into optical signals for transmission over fiber optic cables. The main elements of an optical transmitter include a data encoder/modulator, which prepares the data for transmission by converting it into a format suitable for optical signaling. The electrical interface allows for the connection between the transmitter and the data source, facilitating the transfer of electrical signals.

The laser is a crucial component, as it generates the light that carries the information across the fiber. Finally, the optical interface is responsible for coupling the optical signal into the fiber optic medium, ensuring efficient transmission over distances. This combination of elements is essential for effective fiber optic communication, enabling high-speed data transfer with minimal loss.

The other choices include components related to optical communication systems but do not accurately represent the main elements of an optical transmitter. For instance, optical detectors and demodulators are associated with receivers rather than transmitters, while terms like transponder and coupler pertain to different functions within the overall communication system.