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		 Frequency Division multiplexing is simply assigning each signal a certain frequency range (or wavelength range in fiber terminology) just like the FM spectrum, AM spectrum, etc. in the RF world.  Go ahead and post some more details, I am an EE and took an upper-division Fiber Optics class my senior year about a year ago. 
		
		
		
		
		
			
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				My name is goddfather40 and I approved this message. 
 
I got ho's and I got bitches, 
In C++ I branch with switches  
-MC Plus+
			 
		
		
		
		
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