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Modeling of Coaxial Cable Bragg Grating by Coupled Mode Theory

  • Missouri University of Science and Technology

Research output: Contribution to journalArticlepeer-review

Abstract

A coupled-mode-theory-based approach is applied for the first time to model the recently developed coaxial cable Bragg grating (CCBG). Coupled wave equations are derived to correlate the geometrical discontinues associated with the CCBG structure with the energy coupling that occurs between the forward and backward propagating waves along the CCBG. This paper provides a novel approach to model the coupling coefficient that results in a simplified form of the coupled wave equations. The finite-difference method is used to solve the coupled wave equations numerically. Further, based on the dielectric distortion assumption, the closed-form solution of the CCBG problem has been given. The reflection and transmission spectra of a CCBG sample are calculated numerically and analytically, and are validated by 3-D full-wave electromagnetic simulations, as well as experimental results.

Original languageAmerican English
Article number6873313
Pages (from-to)2251-2259
Number of pages9
JournalIEEE Transactions on Microwave Theory and Techniques
Volume62
Issue number10
DOIs
StatePublished - Oct 1 2014

Keywords

  • Bragg grating
  • Coaxial cable
  • Coupled mode theory (CMT)
  • Modeling
  • Sensor

Disciplines

  • Electrical and Computer Engineering
  • Numerical Analysis and Scientific Computing

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