For good cladding shapes the filling factor, defined above, approaches unity; the following enhancement is possible at various kinds of tapering of the cladding; non-conventional shapes of such cladding are suggested.
Planar waveguides with an active gain medium take an intermediate position between conventional solid-state lasers and double-clad fiber lasers. The planar waveguide may confine a multi-mode pump and a high-quality signal beam, allowing efficient coupling of the pump, and diffraction-limited output.
Other articles related to "alternative structures":
... Support vector machines (SVMs) can effectively utilize a class of activation functions that includes both sigmoids and RBFs ... In this case, the input is transformed to reflect a decision boundary hyperplane based on a few training inputs called support vectors ...
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