Demonstration of mode conversion in an irregular waveguide.
Communications wavelength waveguide mode conversion is demonstrated in an irregular metal-walled structure that was designed by using multiresolution optimization. Strong scatter and a large number of degrees of freedom allowed high-efficiency conversion in a device having a length of just a few wavelengths. The fabrication approach draws on standard semiconductor processing. Mode-selective reflectors, splitters, phase shifters, and other elements can be achieved by using this principle.
Yang
M
M
School of Electrical and Computer Engineering, Purdue University, West Lafayette, Indiana 47907, USA.
Chen
H
H
Webb
K J
KJ
Minin
S
S
Chuang
S L
SL
Cueva
G R
GR