30 August 1993 Optimization of coupling between He11-waveguide mode and Gaussian beam
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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.
© (1993) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
T. Graubner, 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); doi: 10.1117/12.2298675; https://doi.org/10.1117/12.2298675
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