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FDTD waveguide electric field sensor - based electrode analysis

Author: GaoJing
Tutor: ChenFuShen
School: University of Electronic Science and Technology
Course: Optical Engineering
Keywords: Integrated optical waveguide Electric field sensor Dipole antenna Cone antenna FDTD method
CLC: TP212.1
Type: Master's thesis
Year: 2010
Downloads: 64
Quote: 0
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Abstract


The rapid development of electronic technology , electronic equipment, electromagnetic compatibility (EMC) estimates as well as the measurement of the electromagnetic field on the surrounding environment is becoming increasingly important . Measurement of electromagnetic field plays an important role in many areas , more and more of the electromagnetic field sensor developed optical waveguide electric field sensor based on electro-optic effect because it has the advantages of small size , large bandwidth , high sensitivity , immunity to electromagnetic interference , become hotspots in the field of the electric field sensor . LiNbO3 optical waveguide electric field sensor as the research object , using the finite-difference time-domain (FDTD) method for induction space electromagnetic field of the optical waveguide electric field sensor antenna series analysis . Due to the small size of the antenna of the optical waveguide electric field sensor aspect ratio of up to 1000:1 , its simulation of commercial simulation software tend to have larger error . Can effectively simulate the antenna size of any structure , we take the electromagnetic analysis of the most essential , the most original of the FDTD method for modeling optical waveguide electric field sensor antenna dipole structure and cone-shaped structure simulation analysis . The paper first gives the theoretical basis of the integrated optical waveguide electric field sensor , to discuss the characteristics of a dipole antenna and conical antenna , and the establishment of a system model of the optical waveguide electric field sensor . Then do a discussion on the the FDTD basic idea , the key statement of principle as well as in MATLAB realization . Finally, the the different circumstances antenna structure modeling and simulation, by comparing the experimental results , it is found that this method can effectively simulate the optical waveguide electric field sensor , lay the foundation for the subsequent use of FDTD analysis and design of various types of optical waveguide electric field sensor .

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CLC: > Industrial Technology > Automation technology,computer technology > Automation technology and equipment > Automation components,parts > Transmitter ( converter),the sensor > Physical sensors
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