An Optoelectronic Detector with High Precision for Compact Grating Encoder Application

Abstract

This paper presents a novel optoelectronic detection array that adopts the research idea of optical, mechanical and electrical integration. Through the design of new detectors and ASIC, the mutual restriction between high accuracy and miniaturization of the grating encoder is solved. A simulation model of the “broken line” detector structure and process was established that only meets the needs of a compact array layout but also ensures a good photoelectric conversion rate. In addition, we used a professional design program to complete the layout of the ASIC, which maximized the recovery of the signal received by the detector. The simulation and noise analysis results show that the SNRs of the output signal are greater than 60 dB with a 400 kHz response frequency.