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Waveguide-waveguide coupling or directional coupler

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kaps_nit
#1
Feb29-12, 03:16 AM
P: 3
Hi,
There are probably hundreds of books explaining (mathematically!!) how a directional coupler works. Mathematically its straight forward how energy completely transfers from one waveguide to another waveguide periodically.
But what I fail to understand is what is the physical phenomena driving all the energy from one waveguide to another and vice versa.
Any opinion will be very much appreciated.

Thank you
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