Modal propagation analysis of a waveguide with a regular pentagonal cross section with conducting and nonconducting boundaries

Misra, Vandana; Choudhury, Pankaj Kumar; Khastgir, P.; Ojha, S. P.

doi:10.1002/mop.4650080604

Cited by 29 publications

(9 citation statements)

References 11 publications

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“…Among the non-circular cross-sections there are the triangular, elliptical, planar, polygonal and other more complicated shapes investigated [1][2][3][4][5][6][7][8][9]. Dielectric plane slab waveguides form the basic building blocks of a variety of devices in the field of integrated optics, laser beam technology, and microwave communications.…”

Section: Introductionmentioning

confidence: 99%

Analysis Of Waveguide Whose Guiding Region Filled With Dielectric Material Bounded By Two Equiangular Spirals Separating It From Two Dielectric Cladding Regions

Sharma¹

2016

IOSR

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Section: Introductionmentioning

confidence: 99%

Analysis Of Waveguide Whose Guiding Region Filled With Dielectric Material Bounded By Two Equiangular Spirals Separating It From Two Dielectric Cladding Regions

Sharma¹

2016

IOSR

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“…In recent years much effort has been made to analyze the modal characteristic of waveguides having various unconventional cross-sectional shapes (Kawakami and Nishida, 1974;Lewin, 1974;Misra et al, 1995;Matsuhara et al, 1988;Gu et al, 1989;Singh et al, 2000Singh et al, , 2001. Circular waveguides are an indispensable part of optical communication and so they have been studied extensively by various workers all over the world (Ito et al, 1995).…”

Section: Introductionmentioning

confidence: 99%

“…The study of circular fibers has been important not only to improve their propagation characteristics but also to motivate technological developments of associated optoelectronic components. It is also known that a waveguide with a non circular cross-section is special interest due to its possible use in integrated optics (Kawakami and Nishida, 1974;Lewin, 1974;Misra et al, 1995;Matsuhara et al, 1988;Gu et al, 1989;Singh et al, 2000Singh et al, , 2001. Analytical studies of such non-circular fibers, being difficult, are rather rare.…”

Section: Introductionmentioning

confidence: 99%

Computing modal dispersion characteristics of radially Asymmetric Bragg fiber

Prajapati¹,

Singh²,

Saini³

2011

Int. J. Eng. Sci. Tech

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We developed a matrix theory that applies to with non-circular/circular but concentric layers fibers. And we compute the dispersion characteristics of radially unconventional fiber, known as Asymmetric Bragg fiber. An attempt has been made to determine how the modal characteristics change as circular Bragg fiber is changed to asymmetric Bragg fiber. The key to this transfer matrix method (TMM) is the accurate calculation of the propagation constants of modes. And validity of this method is verified by FDTD method. We compare these results with obtained from finite difference time domain and find excellent agreement between the two approaches.

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“…Analysis of multiple bounce scattering phenomena by PO is referred to as iterative physical optics (IPO) [6] and requires multiple surface integrations. For simplicity, we analyze a two-dimensional scattering from openended cavity type geometries, dominated by multiple bounce phenomena.…”

Section: Introductionmentioning

confidence: 99%

Power characteristics of dielectric optical Piet Hein waveguides

Choudhury¹

2002

Micro & Optical Tech Letters

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tenna with L ϭ 4 cm and W ϭ 2 cm resonating at 3.25 GHz is fabricated on a substrate with r2 ϭ 4.28, h 2 ϭ 1.6 mm. The parameters of the symmetric T-shaped feed are optimized to obtain maximum percentage bandwidth. The variation of the return loss of the above antenna with the optimum feed parameters S 1 ϭ S 2 ϭ 3 cm, d 1 ϭ 1.2 cm, d 2 ϭ 1 cm and a ϭ 0.9 cm is shown in Figure 2. The antenna gives a 2:1 VSWR bandwidth of 23.23% in the operating band from 3.086 GHz to 3.842 GHz. The variation of the impedance bandwidth with symmetric T-arm length (S 1 ϭ S 2 ) is studied for antennas fabricated on different substrates resonating at the same frequency. These variations are shown in Figure 3. The radiation patterns for the antenna at the resonating frequency for the optimized feed parameters are shown in Figure 4. The HPBW of the antenna for the E-and H-planes are found to be 110°and 68°, respectively. The cross polarization level is found to be better than Ϫ35 dB in the principal planes. All the above radiation characteristics are highly suitable for large bandwidth applications. CONCLUSIONSThis paper introduces the use of a planar T-shaped feed for rectangular microstrip antenna, with the striking feature of having a reduced feed complexity (as compared with other existing methods) used for bandwidth enhancement. This may find applications in wireless communication and Blue tooth Technology. POWER CHARACTERISTICS OF DIELECTRIC OPTICAL PIET HEIN WAVEGUIDES

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Modal propagation analysis of a waveguide with a regular pentagonal cross section with conducting and nonconducting boundaries

Cited by 29 publications

References 11 publications

Analysis Of Waveguide Whose Guiding Region Filled With Dielectric Material Bounded By Two Equiangular Spirals Separating It From Two Dielectric Cladding Regions

Analysis Of Waveguide Whose Guiding Region Filled With Dielectric Material Bounded By Two Equiangular Spirals Separating It From Two Dielectric Cladding Regions

Computing modal dispersion characteristics of radially Asymmetric Bragg fiber

Power characteristics of dielectric optical Piet Hein waveguides

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