RADIATIVELY COUPLED CORRUGATED WAVE-GUIDE S

A new system of radiatively coupled waveguides is proposed. The coupli ng between the waveguides is due to diffraction of light by their corr ugated surfaces. The disper-sion curves and the dependence or the coup ling length on the structure parameters are calculated. The optimal di stance between the waveguides that ensures the maximum degree of trans fer of radiation is determined. It is shown that in this case the coup ling length has its maximum value equal to pi/2alpha(rad), where alpha (rad) is the coefficient representing radiative losses in a single wav eguide.