Title :
Ridged Waveguides for Ultra-Broad-Band Light Modulators
Author :
Magerl, Gottfried ; Froehling, Peter W.
Abstract :
The electromagnetic field of the dominant mode propagating in the inhomogeneously dielectrically loaded double ridged waveguide is given in terms of a modal series expansion. The numerical evaluation of the propagation constant reveals a remarkably linear dispersion diagram in close agreement with measurements performed in the 8-40-GHz range. Based on this analysis, the bandwidth of a ridged waveguide CO 2 -laser modulator is calculated to exceed 40 GHz, when a 25-mm long CdTe crystal is used as electrooptic material.
Keywords :
Dielectric measurements; Dispersion; Electromagnetic fields; Electromagnetic measurements; Electromagnetic propagation; Electromagnetic waveguides; Loaded waveguides; Optical modulation; Optical propagation; Propagation constant;
Journal_Title :
Microwave Theory and Techniques, IEEE Transactions on
DOI :
10.1109/TMTT.1982.1131055
