What are the main elements of an optical receiver?

The main elements of an optical receiver are crucial for its operation in converting optical signals into electrical signals. The correct answer identifies a demodulator, electrical interface, optical detector, and optical interface as primary components.

Start with the optical detector, which plays a vital role in the optical receiver by detecting incoming light pulses. When light from a fiber-optic signal hits the detector, it generates an electrical current proportional to the light intensity, effectively converting optical signals into electrical form.

The demodulator is necessary for extracting the information from the detected signal. Since most optical signals are modulated for transmission, the demodulator retrieves the original data by interpreting the fluctuations in the detected signal.

The electrical interface is another essential element because it facilitates the connection between the demodulated signal and the subsequent electronic processing stages. This connection ensures that the converted electrical signal can be effectively managed and transmitted to other devices for processing.

Finally, the optical interface is critical because it connects the optical receiver to the optical fiber, ensuring efficient light coupling and minimizing signal loss during the transition from light to electrical signal.

These components work together to ensure that the optical receiver operates effectively, enabling the successful transmission of data over fiber-optic networks. Therefore, option B is the correct choice as