IEE Journal on Microwaves, Optics and Acoustics

IEE Journal on Microwaves, Optics and Acoustics

Online ISSN 2053-9029
Print ISSN 0308-6976

Published from 1976-1979, the IEE Journal on Microwaves, Optics and Acoustics (MOA) was a bimonthly journal with detailed coverage of microwave, optical and acoustic engineering of systems, components and devices of a size comparable to or greater than the wavelength of operation.

This publication is continued by IEE Proceedings H (Microwaves, Optics and Antennas) 1980-1984. ISSN 0143-7097. more..

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Double knife-edge diffraction for curved screens
- Author(s): G.L. James and G.T. Poulton
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- p. 221 –223 (3)
  The known solution for double knife-edge diffraction between parallel staggered plates is extended to include curved screens. The result is used in calculating the radiation field of a Cassegrain antenna.
Computation of electromagnetic fields guided by a cylindrical inhomogeneity in a homogeneous medium of infinite extent
- Author(s): G. Mur and P.J. Fondse
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- p. 224 –230 (7)
  A rigorous numerical method is presented for computing time-harmonic electromagnetic fields that are guided by a transparent, lossless inhomogeneity in a homogeneous medium of infinite extent. Geometrically, the inhomogeneity is a cylinder of arbitrary cross-section. The structure is typical for a uniform open waveguide. On using the wave functions of the circular cylinder outside a cylinder that surrounds the inhomogeneity, and on transforming the electromagnetic-field equations inside this cylinder into a system of first-order ordinary differential equations, a two-point differential eigenproblem is obtained that is solved using standard techniques. Results are presented for waveguides with an equilaterally triangular and a rectangular cross-section, respectively. The latter is studied in detail.
Rays and modes on step-index multimode elliptical waveguides
- Author(s): J.D. Love ; C. Pask ; C. Winkler
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- p. 231 –238 (8)
  Generalised geometric optics are applied to the classification of rays within an optical waveguide of elliptical cross-section. We find four classes of ray paths; (i) bound, (ii) tunnelling, (iii) refracting and (iv) paths that both tunnel and refract. The last class is not found on circular waveguides. The corresponding classes of modes are established from electromagnetic theory. A simple expression for the attenuation of each tunnelling mode is given in the weakly guiding approximation for slight eccentricity, and is shown to be analytically equivalent to the attenuation of the corresponding family of tunnelling rays, when ray-power loss is averaged over all reflections. This equivalence also justifies the use of local ray power-transmission coefficients in the description of ray attenuation.
Erratum: High-frequency behaviour of microstrip open-circuit terminations
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- p. 238 (1)
Mode dispersion, material dispersion and profile dispersion in graded-index single-mode fibres
- Author(s): W.A. Gambling ; H. Matsumura ; C.M. Ragdale
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- p. 239 –246 (8)
  A study of single-mode fibres shows that in the normal operating region the cladding has as much effect on the propagation constant as does the core. A detailed analysis shows that the complex expression for pulse dispersion can be arranged in three groups of terms which may be defined as composite material dispersion, waveguide dispersion and composite profile dispersion. The analysis has been applied to a fibre for which the material dispersion parameters are accurately known and it is found that zero total dispersion can be obtained at a wavelength which depends on the profile and the core diameter but may be selected within a range roughly 1.3–2 μm. However, there are severe requirements on the control of core diameter and profile.

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IEE Journal on Microwaves, Optics and Acoustics

Volumes & issues:

Volume 3 (1979)

Volume 2 (1978)

Volume 1 ([1976, 1977])

Latest content

Double knife-edge diffraction for curved screens

Computation of electromagnetic fields guided by a cylindrical inhomogeneity in a homogeneous medium of infinite extent

Rays and modes on step-index multimode elliptical waveguides

Erratum: High-frequency behaviour of microstrip open-circuit terminations

Mode dispersion, material dispersion and profile dispersion in graded-index single-mode fibres

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Most cited content for this Journal