Which component would be primarily focused on signal isolation?

The component that is primarily focused on signal isolation is the isolation amplifier. This type of amplifier is designed specifically to prevent ground loops and interference between different parts of a system. It achieves this by providing galvanic isolation, which allows signals to be transferred while keeping the input and output electrically isolated from each other. This is crucial in many applications where accurate signal measurements are required in the presence of noise or other unwanted signals.

Isolation amplifiers work by using a transformer or an opto-isolator to separate the input from the output, which helps to protect sensitive electronic circuits from high voltages or common-mode noise. It ensures that the measurements taken on one side do not affect or get affected by the operations on the other side, thereby maintaining signal integrity and accuracy.

Other components mentioned serve different purposes: modulators are used for encoding information onto a carrier signal, optical amplifiers are focused on boosting signal strength in optical communications, and signal processors handle various aspects of signal manipulation but do not specifically provide isolation. Thus, the isolation amplifier distinctly meets the needs for signal isolation in electronic systems.