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An algorithm for the calculation of the propagation constant of integrated optics waveguides was developed. The waveguide may consist of any number of layers with complex refractive indexes due to gain and loss. It allows the additional determination of the field distribution. Thus, all parameters necessary for heterostructure laser development can be calculated. The resulting program was run on a personal computer; numerical results are presented.

Electromagnetic radiation of 337-μm wavelength has been guided in the form of TM surface waves along thin copper sheets perforated in a regular pattern (metal mesh). Polyethylene prism couplers served for launching and output coupling. The frequency dispersion of the metal mesh guide is similar to that of a transmission line loaded periodically with shunt capacitances. Strong directional dispersion is observed.

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