SEMICONDUCTOR LIGHT DETECTING DEVICE

摘要

A semiconductor light detecting device in which a housing with an optical fiber is inserted in is secured to a header with a photodiode chip mounted on integral therewith, and a light detecting surface of the photodiode chip is opposed to a light emitting surface of the optical fiber, the photodiode chip comprising a p-n junction as the light detecting surface for outputting a photocurrent as a detected signal, and a region for capturing carriers generated in a peripheral area of the p-n junction, the photodiode chip being opposed to the light emitting end surface of the optical fiber. As a result, no optical lens system is necessary, and if an optical lens system is used, an inexpensive optical system may be used. As a result, the device itself can be fabricated at low costs and easily.