Diode lasers at 980 nm are a favored power source for Er-doped fiber amplifiers. Conditions of amplifier deployment require that the laser pumps be hermetically sealed and reliable for >105 hr. Many amplifier systems currently under design or test require >70 mW of fiber coupled power (Po), which corresponds to very high facet power densities in excess of five megawatts/cm2.
© 1994 Optical Society of AmericaPDF Article
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