Theoretical design of guided wave structure for electrooptical modulation at 10.6 µm

Two guided-wave structures for electrooptical modulation at 10.6-μm wavelength are proposed in this paper. They are structures that could be fabricated realistically by present technology. Theoretical design data on these two structures concerning their propagation wave numbers, attenuation rate, phase modulation rate, and dispersion characteristics are given so that an optimum design could be conceived before fabrication. In the two examples given, phase modulation rates of 3.75-9.3 mrad/V/cm can be achieved in these structures.