The Research On The High-Speed Electro-Optical Device Driving

The high-speed electro-optical devices are a class of devices made based on the material’s electro-optical effect.They have been widely used in optical communication networks,lidar,and lithography.At present,the research of high-speed electro-optical devices is mainly focused on the research of high electro-optical coefficient materials.However,the response speed of high-speed electro-optical devices is not only related to the material’s own performance,but also depends on the performance of the device drive circuit.Therefore,researching a suitable driving circuit can improve the overall response speed of electro-optic devices in practice.In this paper,the lanthanum-modified lead zirconate titanate(PLZT)transparent ceramics and their electro-optical devices are taken as the research object.A method for measuring the electro-optical coefficient is proposed and a high-speed drive circuit for the drive performance requirements of high-speed electro-optical devices is designed.The research content of this paper is mainly divided into two aspects: In the first aspect,the electro-optic coefficient of PLZT transparent ceramics is measured.In this part,this article briefly introduces common measurement methods for electro-optic coefficients,and proposes a method for measuring electro-optic coefficients based on the Stokes vector.Firstly,the basic principle of Stokes vector generator for measuring the electro-optical coefficient is introduced theoretically;Secondly,the composition of the measurement system and the experimental setup of this method are introduced;Finally,the calculation method of the PLZT transparent ceramic electro-optical coefficient is optimized.In the second aspect,the drive circuit of high-speed electro-optical devices is studied.In this part,the composition of the driving circuit and the role of each part are analyzed,and the design ideas of the core part of the driving circuit are proposed according to the performance requirements of high-speed electro-optic device drive.Finally,the theoretical verification is carried out through circuit simulation,and the engineering prototype of the drive circuit is designed by PCB making.This dissertation verifies that the Stokes vector method can achieve enabling scientific,accurate,and efficient electro-optic coefficient measurement.The measurement results provide a theoretical basis for the research of high-speed electro-optical devices and their drives.At the same time,the performance of the drive circuit is tested and the analysis of the test results shows that the pulse width and amplitude of the output pulse of the drive circuit can be adjusted in a wide range and its rise and fall time are steep,which is theoretically feasible for driving highspeed electro-optic devices.And this research and research results driven by high-speed electrooptical devices will play a certain role in promoting the application and development of laser communication in the future.