What is a positive-intrinsic-negative diode?

Study for the HFC Designer I and II Certification Exam. Prepare with questions and detailed explanations. Get exam-ready with our comprehensive resources!

A positive-intrinsic-negative (PIN) diode is a semiconductor device that is widely used as an optical detector. The key characteristic of a PIN diode lies in its structure, which consists of a layer of intrinsic (pure) semiconductor material sandwiched between a p-type (positive) and an n-type (negative) semiconductor. This design allows the diode to effectively separate and collect charge carriers (electrons and holes) when exposed to light, making it responsive to variations in light intensity.

When light photons are absorbed by the intrinsic layer of the PIN diode, they create electron-hole pairs, which can then move and generate a current proportional to the intensity of the incident light. This results in a response that is linear to the light intensity, making it an accurate and effective optical detector.

The other options represent different devices or functionalities that do not apply to the characteristics of a PIN diode. For instance, an optical amplifier is involved in boosting signal strength rather than detecting light, while a type of laser diode generates light rather than detecting it. A passive optical component typically does not have the ability to convert light into electrical signals, which is crucial for the function of the PIN diode.

Thus, the correct designation of a positive-intrinsic-negative diode

Subscribe

Get the latest from Examzify

You can unsubscribe at any time. Read our privacy policy