Photoelectric detector assembly

Abstract

A photoelectric detector assembly comprises: a waveguide grating which is in arbitrary shape, changes propagation directions of optical power and optical signals incident on a surface of the waveguide grating through diffraction and refraction effects of the waveguide grating, and collects and gathers the optical power and the optical signals; and a semiconductor photoelectric detector arranged at a center position corresponding to a light outlet hole at one side of the waveguide grating, wherein one side of the semiconductor photoelectric detector opposite to the waveguide grating is a photosensitive surface used for converting the received optical power and the optical signals into electric signals. Through combination of the waveguide grating and the semiconductor photoelectric detector, the photoelectric detector assembly of the present invention can improve optical power response of the photoelectric detector and a detection area of the optical signals, and can greatly reduce production cost at the same time, thereby providing powerful guarantee for better and wider application of the photoelectric detector.

Description

Technical field [0001] The invention relates to various fields of military and national economy, and more specifically is a photodetector assembly. Background technique [0002] Due to the advantages of small size, light weight, fast response speed, and easy integration with other semiconductor devices, photodetectors are widely used in the fields of optical communications, signal processing, optical sensing systems, and optical measurement. In recent years, with the expansion of the application range of photodetectors, the market has put forward more and higher requirements on the index parameters and structural dimensions of photodetectors. For example, under certain special environments and conditions, the light energy to be measured The light signal is relatively weak. In order to receive as much light energy as possible and detect weak light signal changes, the goal can only be achieved by increasing the photoresponse of the detector or by increasing the photosensitive area ...

AI Technical Summary

Problems solved by technology

However, the photoresponsivity and photosensitive area are limited by the process conditions and process level. After reaching a certain level, it is difficult to continue to improve, and the cost is also greatly increased, which cannot meet the requirements of mass production.

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