I need information on coupled mode theory, specifically with reference to cylindrical waveguides. The more info the better. I have some references, but they are quite scattered, I am yet to find a reference that really encapsulates the 'heart' of coupled mode theory. If anyone has a good reference (web based or otherwise), on coupled mode theory, I would be greatful. If somebody that is familiar with Coupled Mode Theory has some time on their hands, you are welcome to post info on the theory itself, however I gather that the theory is rather complex. Regards, Claude.