Light scattering from a multimode waveguide of planar metallic walls

The experimental results of the reflection at a MgF 2 waveguide between Ag metallic walls and the light scattering from the same system for p and s linearly polarized incident light are reported. The thickness of the dielectric film was chosen in such a way that the system supports six transverse ma...

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Bibliographic Details
Published in:Optics communications 2003-11, Vol.227 (4), p.227-235
Main Authors: Ramı&#x0301, rez-Duverger, Aldo S., Garcı&#x0301, a-Llamas, Raúl
Format: Article
Language:English
Subjects:
Absorption and scattering of radiation
Applied sciences
Circuit properties
Dye lasers
Earth, ocean, space
Electric, optical and optoelectronic circuits
Electronics
Exact sciences and technology
External geophysics
Fundamental areas of phenomenology (including applications)
Integrated optics. Optical fibers and wave guides
Lasers
Optical and optoelectronic circuits
Optics
Physics
Physics of the high neutral atmosphere
Scattering
Scattering, polarization
Thin Films
Waveguide
Waveguides, couplers, and arrays
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Summary:The experimental results of the reflection at a MgF 2 waveguide between Ag metallic walls and the light scattering from the same system for p and s linearly polarized incident light are reported. The thickness of the dielectric film was chosen in such a way that the system supports six transverse magnetic and six transverse electric-guided modes at a given wavelength. We found dips in the reflection as a function of the incident angle as well as a function of the wavelength that are due to excitation of modes in the MgF 2 film. From the spectral reflection curves the dispersion relation of the modes is obtained. The scattered light shows peaks at angles corresponding to the measured excitation of the waveguide modes. These peaks are because of single-order scattering and occur at any angle of the incident light. Enhancement peaks in the scattering response are found in resonant conditions, and the efficiency of injecting light into the guide is reduced.
ISSN:0030-4018
1873-0310
DOI:10.1016/j.optcom.2003.09.057