Equilateral triangular waveguides, modal structure, attenuation characteristics and quality factor
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arXiv
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| Format: | Preprint |
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2025
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| author | Onah, Francis Emenike Gutiérrez-Vega, Julio C. |
| author_facet | Onah, Francis Emenike Gutiérrez-Vega, Julio C. |
| contents | Equilateral triangular waveguides are one of the very few special kind of waveguides, whose field solutions can be constructed without necessarily solving the Maxwell's equations. Solutions can be obtained simply by superposing some plane wave solutions and requiring the solutions to obey the necessary boundary conditions for each modes, as would be expected of any Maxwell equation's solution or that of any Helmholtz equation resulting from the problem of Heat flow, membrane vibrations, etc. In fact, this was how one of the earlier solutions or eigen functions found by Gabriel Lamé, were obtained. Julian Schwinger, performed the same analysis, but used the superposition of complex exponential functions, in order to obtain the eigen functions of an equilateral triangular waveguide. The solutions exhibit other special symmetric properties that leave their solutions invariant and these special symmetries and applications, are what we investigate in this work, particularly as it relates to their attenuation characteristics and quality factors. Finally, by employing the number theory of Eisenstein integers or primes we have obtained a well ordered and more rigorous eigenvalues of the equilateral triangular waveguides, which is definitely something missing in the literature. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2510_03976 |
| institution | arXiv |
| publishDate | 2025 |
| record_format | arxiv |
| spellingShingle | Equilateral triangular waveguides, modal structure, attenuation characteristics and quality factor Onah, Francis Emenike Gutiérrez-Vega, Julio C. Optics Equilateral triangular waveguides are one of the very few special kind of waveguides, whose field solutions can be constructed without necessarily solving the Maxwell's equations. Solutions can be obtained simply by superposing some plane wave solutions and requiring the solutions to obey the necessary boundary conditions for each modes, as would be expected of any Maxwell equation's solution or that of any Helmholtz equation resulting from the problem of Heat flow, membrane vibrations, etc. In fact, this was how one of the earlier solutions or eigen functions found by Gabriel Lamé, were obtained. Julian Schwinger, performed the same analysis, but used the superposition of complex exponential functions, in order to obtain the eigen functions of an equilateral triangular waveguide. The solutions exhibit other special symmetric properties that leave their solutions invariant and these special symmetries and applications, are what we investigate in this work, particularly as it relates to their attenuation characteristics and quality factors. Finally, by employing the number theory of Eisenstein integers or primes we have obtained a well ordered and more rigorous eigenvalues of the equilateral triangular waveguides, which is definitely something missing in the literature. |
| title | Equilateral triangular waveguides, modal structure, attenuation characteristics and quality factor |
| topic | Optics |
| url | https://arxiv.org/abs/2510.03976 |