Highest power mode locked fiber laser 65 w jena yb doped 10xx nm 850 nj. Absorption and stimulated emission coefficients for a pump power at 1480 nm are determined experimentally for three types of erbium doped silica fiber. Here we optimize the length er 3 concentration and pump power and wavelength of the edfa and also pump powers and wavelengths of the fra to obtain the flattest operating gain spectrum. 
				
			
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