GAIN TEMPERATURE-DEPENDENCE OF ERBIUM-DOPED SILICA AND FLUORIDE FIBERAMPLIFIERS IN MULTICHANNEL WAVELENGTH-MULTIPLEXED TRANSMISSION-SYSTEMS

The temperature dependence of the gain of aluminosilica and fluoride b ased erbium-doped fiber amplifiers are theoretically and experimentall y examined and compared, As expected from the larger temperature depen dence of erbium-doped fluoride fibers (EDFF) cross sections [1], the s ingle channel gain of EDFF amplifiers presents larger wavelength-depen dent temperature sensitivity. The implications of this large and nonun iform temperature dependence of the gain on wavelength-division multip lexing (WDM) are theoretically analyzed and discussed.