| China is a great power with large population and agriculture.Rice is one of the main grain crops in China.The area of rice sown in China accounts for 1/4 of the total area of grain crops in the whole country.The annual output accounts for more than half of the total grain output of the whole country.With the improvement of people’s living standard,the production and quality of rice need to be further improved.The traditional small farm production that cannot meet the production requirements of agricultural modernization has encountered many bottlenecks in the process of enhancing the output and quality.For example,the lack of accurate information of controlling temperature,fertilizer,water level and soil quality leads to achieving high yield.However,with the development of science and technology,these bottlenecks can be solved by the systematization,mechanization and information of agriculture.Especially in recent years,the agricultural information technology developed greatly by the country has combined modern information technology with the agricultural industry,by using computer,information storage and processing,communication and network.Information technology,such as artificial intelligence,has the characteristics of systematic,efficient development and utilization of agricultural technology to improve the stable growth of output and quality.Agricultural informatization includes three key stages which are the collection of comprehensive agricultural information,the accurate transmission of information and the processing of information.In addition,the research of special materials and all-optical control of nonlinear optics has become a hot topic in the field of optical research.In recent decades,the study of optical transmission has been a hot spot in the field of nonlinear optics.These research results are of great reference value to all optical switches,beam control,nonlinear transmission,especially to accurate transmission.Based on the nonlinear Schrodinger equation of optical information transmission,this paper analyzes the transmission characteristics of agricultural light information in special nonlinear media by numerical method and optimize the accurate transmission of agricultural information.Firstly,the transmission characteristics of the strongly nonlocal nonlinear medium are analyzed theoretically.Secondly,the nonlinear Schrodinger equation is solved by the numerical analysis method.Some stable optical modes in the nonlinear transmission medium are discussed and obtained,and the dynamic mechanical problems of the transmission are studied.Finally,the control characteristics of the precise transmission of multi-optical information are discussed.These characteristics has tremendously changed traditional electric aggregator using multiway optical signal and provided a theoretical basis of designing the optical aggregator.There are two main aspects in this paper:(1)The Schrodinger equation for the transmission of optical information in a nonlinear medium and the influence of strong nonlocal nonlinear medium on information transmission are discussed.The analytical solution of high-order mode soliton wave of beam propagation in strong nonlocal medium is obtained by using the simplified linear model of beam propagation.Based on the(1+1)dimensional linear model,the interaction process of two and three beams co-propagating in a planar dielectric waveguide composed of strong nonlocal nonlinear medium is discussed.The exact analytical solution of the interaction between two and three obliquely incident beams has provide strong evidence of researching the optical aggregator.(2)Using the software of MATLAB,the characteristics from single soliton to five solitons converging together are numerically analyzed by the step Fourier method.By changing the transmission distance and normalized third-order coefficients of solitons,it shows that interaction effects between solitons are different under different characteristic parameters.Under same characteristic parameters,the number of soliton changes.The transmission characteristics between them are also different.Through the numerical simulation of the transmission characteristics of multi-channel optical information,the best combination of theoretical parameters for simultaneous transmission of multi-channel optical information is obtained,which provides a theoretical reference for the study of the characteristics of multi-channel optical information aggregator.It is conducive to the non-destructive transmission of agricultural information of rice such as light,temperature,water,PH value in the process of rice growth,and plays a guarantee role for high quality and high yield of rice. |
