This work was supported by National Nature Science Foundation of China (60277025);Shanghai Leading Academic Discipline Project (T0102)
In the weakly guided case, the power propagation in the core and the cladding of a left-handed material fiber is obtained by solving Maxwell’s equations. The wave-guide efficiency is analyzed at cutoff and far from c...
Absorption efficiency of graded-index double-clad fiber lasers or amplifiers is analyzed. As ray optics method is no longer valid for graded-index case, the mode analysis method is used. Calculated results show that a...