Seven Steps To Successful Ultra-Low-Light Signal Conversion

The photodiode remains the basic choice for photo-detection among solid-state detectors (Fig. 1). It is widely used in optical communication and medical diagnosis. Other applications include color measurement, information processing, barcodes, camera exposure control, e-beam edge detection, faxes, laser alignment, aircraft landing aids, and missile guidance. 1. The energy transmitted by light to a photodiode sensor generates a current …