Functional field transformation with irregular waveguide structures

Ming-Chuan Yang, Marin; Jia-Han Li, Marin; Webb, Kevin J.
October 2003
Applied Physics Letters;10/6/2003, Vol. 83 Issue 14, p2736
Academic Journal
We demonstrate functional field transformation in irregular waveguide structures having strong scatter from a stepped conducting wall geometry. The resulting degrees of freedom and significant evanescent field content make it possible to accomplish virtually perfect transformation in a distance of several wavelengths. A microwave experiment verifies frequency-dependent transformation, suggesting that wavelength division multiplexing based on this principle is possible. A mode-selective transformation, which exhibits disparate reflectivities for different modes at the same frequency, may find application in multimode laser cavities. © 2003 American Institute of Physics.


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