A method of making an optical fiber article can include providing an
optical fiber including at least a core; providing a preform; and
subsequent to the foregoing providing of the optical fiber and the
preform, drawing the preform so as to dispose a region about the optical
fiber. An optical fiber article can include a core; a pump cladding
disposed about the core, the pump cladding for propagating pump light;
and a second cladding disposed about the pump cladding, where the second
cladding can provide a photonic bandgap for tending to confine pump light
to a region about which the second cladding is disposed. The second
cladding can comprise a plurality of layers including a first layer
having a different optical property than a second layer, and the
plurality of layers can be arranged as to provide the photonic bandgap
effect.