Which component of an optical modulation system contains an optical detector and demodulator?

The optical receiver is the component of an optical modulation system that contains an optical detector and demodulator. The primary function of an optical receiver is to convert the incoming optical signals into electrical signals, which involves two key processes: detection and demodulation.

The optical detector within the receiver is responsible for sensing the light signals transmitted through the fiber and converting them to electrical signals. This is typically done using photodiodes or similar devices that can respond to the light wavelengths used in fiber optics.

Following the detection process, the demodulator then processes the electrical signals to retrieve the original information that was transmitted. This step is crucial as it ensures that the data encapsulated within the optical signals is accurately extracted for further processing or display.

Other components mentioned, such as the optical transmitter, optical splitter, and optical amplifier, serve different functions within the overall system. The optical transmitter generates and sends out the optical signals, the optical splitter distributes the optical signals to multiple pathways, and the optical amplifier boosts the signal strength for long-distance transmission. However, none of these components carry out the dual role of detecting and demodulating optical signals like the optical receiver does.