A hub for use in a passive optical network (PON) includes a transmission
fiber on which an information-bearing optical signal is received, a
double-cladded, rare-earth doped fiber located along the transmission
fiber for imparting gain to the information-bearing optical signal, and a
combiner having an output coupled to the transmission fiber and a
plurality of inputs. The output is coupled to the transmission fiber such
that optical energy at pump energy wavelengths but not signal wavelengths
are communicated therebetween. At least one pump source is optically
coupled to one of the inputs of the combiner for providing optical pump
energy to the double-cladded, rare-earth doped fiber. An optical splitter
is also provided. The optical splitter has an input coupled to the
transmission fiber for receiving an amplified, information-bearing
optical signal and a plurality of outputs for directing portions of the
amplified, information-bearing optical signal to remote nodes in the PON.