Photodiode Test Using the Keysight B2980A Series
应用文章
A photodiode (PD) is a semiconductor device that converts light into current. When the PD is reverse-biased, a current is generated as the PD absorbs photons. The PD also produces a small amount of current when no light is present; this is known as dark current. Since the output current is directly proportional to the light intensity applied to the PD junction, it can be used to detect small quantities of light. This makes PDs useful in a wide range of applications such as optical communication, light detection, and consumer electronics.