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Proceedings Paper

Optimization of coupling between He11-waveguide mode and Gaussian beam
Author(s): T. Graubner
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Paper Abstract

Megawatt microwave power transmission systems often use a combination of quasi optical mirror lines andovermoded corrugated circular waveguides. The optimum coupling between a free space Gaussian beam and acorrugated waveguide can be achieved by particular mode mixtures of HEll and HE12 hybrid modes [1]. Thewanted amount of the HE12 mode can be generated from the HEll in a corrugated mode converter with periodicdiameter variation or in a corrugated taper. In a previous publication [2] the design and first measurements onperiodic mode converters have been presented. The promising detailed measurements (section A) of these ratherlong devices stimulated the development of very compact converters - i.e. nonlinear tapers. Their design ispresented in section B.

Paper Details

Date Published: 30 August 1993
PDF: 2 pages
Proc. SPIE 2104, 18th International Conference on Infrared and Millimeter Waves, 21046R (30 August 1993); doi: 10.1117/12.2298675
Show Author Affiliations
T. Graubner, Univ. Stuttgart (Germany)


Published in SPIE Proceedings Vol. 2104:
18th International Conference on Infrared and Millimeter Waves
James R. Birch; Terence J. Parker, Editor(s)

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