2010
DOI: 10.1109/jqe.2010.2052789
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Numerical Investigation of the ASE and Power Scaling of Cladding-Pumped Er–Yb Codoped Fiber Amplifiers

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Cited by 71 publications
(20 citation statements)
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“…An auxiliary signal at 1,064 nm was used to ensure stable amplifier operation [7]. The influences of the wavelength of auxiliary signal externalcavity laser on amplification and reabsorption were also explored experimentally [8] and theoretically [9,10]. This method is efficient and elegant; however, it needs another laser source operating in *1.0 lm and relevant fiber isolators for all fiber configurations.…”
Section: Introductionmentioning
confidence: 99%
“…An auxiliary signal at 1,064 nm was used to ensure stable amplifier operation [7]. The influences of the wavelength of auxiliary signal externalcavity laser on amplification and reabsorption were also explored experimentally [8] and theoretically [9,10]. This method is efficient and elegant; however, it needs another laser source operating in *1.0 lm and relevant fiber isolators for all fiber configurations.…”
Section: Introductionmentioning
confidence: 99%
“…At 150 W incident pump power, the output powers of 1/1.5 μm were 3.08/36.9, 3.4/32.4, and 3.1/25.1 W for the fiber lengths of 95, 80, and 65 cm, respectively. This indicates that the longer length of LMA-EYDF increases the reabsorption of the 1 μm emission and, thus, limits its output power, while the shorter length is unable to provide sufficient gain for the amplification of the 1 μm laser [27] . Therefore, an 80 cm LMA-EYDF was preferred in our dual-band amplification experiment.…”
mentioning
confidence: 99%
“…The reabsorption of the auxiliary signal was also surmised as one of the reasons to explain the unaffected slope efficiency of the 1.5 μm signal. In [4] and [5], we systematically investigated the influences of the fiber length, the pump wavelength, and the power and wavelength of the auxiliary signal on the performance of an EYDFA by numerical simulations. It was found that the counter-pump propagating Yb ASE was dominant.…”
mentioning
confidence: 99%
“…3(b) we can see that before the Yb-band FBG was introduced, the backward Yb ASE (dashed line) had a peak around 1032 nm at a higher pump power. As theoretically proposed in [4] and experimentally verified in [6], the most effective wavelength of the auxiliary signal ought to be around the peak of the backward Yb ASE spectrum, so the center wavelength of the FBG was designed to 1032 nm. In Fig.…”
mentioning
confidence: 99%