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Optics Communications

Self-pulsation and bistability in a cw pumped erbium-doped fiber resonator system

Liguo Luo, P. L. Chu

Published Feb 1, 1997• 11 citations
Publisher
DOI
10.1016/s0030-4018(96)00608-6

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Optical bistability phenomenon in a single fiber ring laser employing erbium-doped fiber (EDF) as gain medium is observed in our experiment. In the EDF amplifiers, the photons of pump light cannot completely transfer into that of signal light because of various attenuation factors. This part of loss (useless pump loss) and active spontaneous emission (ASE) can both lower the small-signal gain of the EDF, and can eventually result in the bistability phenomenon. The range of this bistability has a complicated relationship with the length of the EDF, the erbium-ion doping concentration, the cavity loss and the useless loss coefficient of the pump light.