Coupled-wave description of the absorption-type ferrite modulator

Coupled wave theory is applied to the absorption type ferrite modulator. The importance of the quantities (¿x¿ ¿y)/K and (ßx¿ßyK) in determining the attenuation of the incident polarization are thereby demonstrated. For maximum attenuation we require (¿z¿¿y)/K= ¿2 and (ßz¿ ßy)/K = 0. Some experimental data confirming the effect of the quantity (¿x¿ ¿y)/K on the loss of the incident polarization are given.