1152 THE BELL SYSTEM TECHNICAL JOURNAL, SEPTEMBER 1954 



P-Q 



0.3 0.4 0.5 0.6 0.7 0.6 



nAo 



Fig. 3 — Q and P — Q versus n/ro . 



differs for right and left circular waves, so that a plane polarized signal 

 (which is the sum of equal right and left circular components) will 

 emerge, in general, elliptically polarized, with the major axis of the 

 ellipse tilted from the polarization at incidence by an angle which differs 

 from the single trip value as the result of internal reflections. It is clear 

 that this change in rotation can be calculated in a very elementary way. 

 When the sample is confined to a waveguide a similar effect occurs, 

 but its calculation becomes extremely involved, at least for arbitrarily 

 large magnetizations. The reason, which should be clear from Part I of 

 this paper, is that the circularly polarized modes no longer have the same 

 field configiu'ations inside and outside the sample.* Therefore any inci- 

 dent mode excites all of the normal modes of the ferrite; these, in turn, 

 give rise to all the mode patterns of the air-filled portion of the guide. 

 Even if all but one of these are cut off, the excitation modifies the phase 

 and amplitude of the reflected and transmitted portions of the propagat- 

 ing mode. 



* This is due to the fact that there is now no ordinar}^ effective scalar perme- 

 ability as for infinite geometry. 



