Abstract

Tellurite fibers are now being widely studied for specialized device applications, such as erbium doped fiber amplifiers (EDFA) for the C and L bands, thulium duped fiber amplifiers (TDFA) for the S-band and praseodymium doped fiber amplifiers (PDFA) for the 1.3 micron band. These fibers offer broad amplification bandwidth^1,2,3 and high radiative transition efficiencies. Methods for broadening, as well as flattening the amplification bandwidth of Er^3,4-doped tellurium fibers art very important in increasing the transmission capacity of dense-wavelength-division-multiplexing systems (DWDM). Various reports describing such methods can be found in the literature.^4,5,6

© 2002 Optical Society of America