Optimization of coupling between He11-waveguide mode and Gaussian beam

T. Graubner

doi:10.1117/12.2298675

30 August 1993 Optimization of coupling between He11-waveguide mode and Gaussian beam

T. Graubner

Proceedings Volume 2104, 18th International Conference on Infrared and Millimeter Waves; 21046R (1993) https://doi.org/10.1117/12.2298675
Event: 18th International Conference on Infrared and Millimeter Waves, 1993, Colchester, United Kingdom

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.

Citation Download Citation

T. Graubner "Optimization of coupling between He11-waveguide mode and Gaussian beam", Proc. SPIE 2104, 18th International Conference on Infrared and Millimeter Waves, 21046R (30 August 1993); https://doi.org/10.1117/12.2298675

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