Review of Numerical Methods for the Analysis of Arbitrarily-Shaped Microwave and Optical Dielectric Waveguides

Saad, Said

doi:10.1109/tmtt.1985.1133147

Cited by 102 publications

(23 citation statements)

References 33 publications

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“…These interactions were investigated using a Finite Element Method (FEM) [8][9][10][11] simulation as implemented in Ansoft High Frequency Structure Simulator (HFSS) [12].…”

Section: Computational Approachmentioning

confidence: 99%

The Role of Fibre Orientation on the Electromagnetic Performance of Waveguides Manufactured From Carbon Fibre Reinforced Plastic

Bojovschi¹,

Nicholson²,

Galehdar³

et al. 2012

PIER B

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Abstract-Aircraft skins manufactured from carbon fibre reinforced plastic (CFRP) can simultaneously support structural load and act as antennas. This offers the potential for disproportionately large antenna elements and arrays, and thus enhanced aircraft capability. The efficient design of such structures requires that the link between CFRP microstructure and electromagnetic performance be established. This paper presents a method of predicting the electromagnetic attenuation of waveguides manufactured from CFRP. The method considers both the orthotropic, complex conductivity of CFRP, high in the fibre direction and low transverse to it, and the local electric fields in waveguides, which vary with location and frequency. The method was validated experimentally using waveguides manufactured from aerospace grade IM7/977-3 prepreg tape with [

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“…These interactions were investigated using a Finite Element Method (FEM) [8][9][10][11] simulation as implemented in Ansoft High Frequency Structure Simulator (HFSS) [12].…”

Section: Computational Approachmentioning

confidence: 99%

The Role of Fibre Orientation on the Electromagnetic Performance of Waveguides Manufactured From Carbon Fibre Reinforced Plastic

Bojovschi¹,

Nicholson²,

Galehdar³

et al. 2012

PIER B

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“…This treatment is chosen to simplify the analysis of the coupling and it is in harmony with experiments where the half power bandwidth of a laser spike is much smaller than the spacing of the lasing wavelengths. 3,4 Although the electromagnetic fields in an elliptical dielectric waveguide can be studied from numerical method or dyadic Green's function method, [17][18][19][20][21][22] we found that it straightforward to formulate the coupling coefficient by following Yeh's analytical approach. 23 Using Yeh's notation, it is shown in Secs.…”

Section: ͑1͒mentioning

confidence: 97%

An analysis of coupling between a whispering gallery mode laser in an elliptical microring and the dominant mode in the coaxially oriented elliptical optical fiber

Baktur

Pearson

Ballato

2010

Journal of Applied Physics

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The problem of coupling a whispering gallery mode laser into an optical fiber is considered. The whispering gallery mode laser is generated in a polymer microring formed coaxially on the optical fiber. The focus of this paper is to determine factors that influence the coupling between the laser and the fiber around which it is formed. The coupling mechanism is analyzed and it is found that when the microring and the fiber are of elliptical cross section, there exists controllable coupling between the laser and propagation mode in the fiber. The coupling between laser mode and fiber mode is due to characteristics of Mathieu functions that describe the fields in elliptical waveguides. It is shown that the coupling between the laser and the dominant mode in the fiber can be optimized by the designing the dimension of microring, the eccentricity of the elliptical cross section, and the material contrast between fiber and microring.

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“…The design and optimization of the sensors and the study of the interaction of electromagnetic radiation from PD, with different components in AIS, were investigated using a Finite Element Method (FEM) [23][24][25][26], as implemented in ANSYS High Frequency Structure Simulator (HFSS) [27] package.…”

Section: Computational Approachmentioning

confidence: 99%

Partial Discharge Detection Approach for a Medium Voltage Switchgear System

Cai¹,

Wilkinson²,

Bojovschi³

2014

PIER

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Abstract-Partial Discharge detection techniques strive to ensure a safe and reliable power network by preventing power failure. In this work, electromagnetic sensing of partial discharge, in air-insulated medium voltage switchgear (Type D24-121114 of Driescher) is considered. The partial discharges are approximated by Gaussian sources. A versatile broadband sensor for detecting two major types of partial discharge was designed and optimized. The antenna has low return loss and high gain over the frequency band of corona discharge, 0.75-0.9 GHz and dry band arcing, 1.25-1.4 GHz. The horn antenna is incorporated into the medium voltage switchgear for detecting partial discharges. The analysis of the electromagnetic field distributions generated by partial discharges in switchgear is coupled with the sensing efficiency of the horn antenna. The results indicate a good correlation between the intensity, location and frequency band of partial discharge and their sensing. This study provides the foundation for a dual band detection system of partial discharge in switchgear systems.

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Review of Numerical Methods for the Analysis of Arbitrarily-Shaped Microwave and Optical Dielectric Waveguides

Cited by 102 publications

References 33 publications

The Role of Fibre Orientation on the Electromagnetic Performance of Waveguides Manufactured From Carbon Fibre Reinforced Plastic

The Role of Fibre Orientation on the Electromagnetic Performance of Waveguides Manufactured From Carbon Fibre Reinforced Plastic

An analysis of coupling between a whispering gallery mode laser in an elliptical microring and the dominant mode in the coaxially oriented elliptical optical fiber

Partial Discharge Detection Approach for a Medium Voltage Switchgear System

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