Light source for dynamic testing of photo detectors
Abstract
A driver was constructed to generate optical pulses by means of a light emitting diode over an output range of more than 4 decades. A square wave function is provided with a duration of 1 microsecond followed by an exponentially decaying part with a time constant of about 2 microseconds. The square wave can be used to determine the static transfer function of the detector in combination with calibrated optical attenuators while the decaying part provides a way to study the dynamical behavior of the detector. Although the system was originally designed for testing receivers from optical radars, it can be applied to analog optical detectors in general.
- Publication:
-
Unknown
- Pub Date:
- March 1989
- Bibcode:
- 1989lsdt.book.....K
- Keywords:
-
- Light Emitting Diodes;
- Optical Radar;
- Performance Tests;
- Photometers;
- Pulse Generators;
- Attenuators;
- Circuit Diagrams;
- Dynamometers;
- Infrared Radiation;
- Square Waves;
- Wave Functions;
- Optics