Terahertz wave tunable mode converter
A mode converter, terahertz technology, applied in waveguide-type devices, optical waveguides, electrical components, etc., can solve the problems of low cut-off frequency, single high-order mode, and difficulty in suppressing fundamental mode, and achieve small size and simple structure. Compact, favorable for miniaturization and integration
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[0017] The present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments.
[0018] The principle on which the present invention is based is:
[0019] The design principle of the terahertz waveguide tunable mode converter structure is as follows: the terahertz wave of the low-order mode is incident into the cylindrical metal inner wall waveguide, and the resonant interaction of the transverse standing wave mode occurs in the rectangular periodic undulation structure, which is output at the output end. A single high-level pattern. The dispersion curve of the mth order transverse mode can be given by:
[0020] f r ( m ) = c 2 π k r ( ...
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