Numerical Investigation of the ASE and Power Scaling of Cladding-Pumped Er–Yb Codoped Fiber Amplifiers

Han, Qun; Ning, Jiping; Sheng, Zhaoxia

doi:10.1109/jqe.2010.2052789

Cited by 71 publications

(20 citation statements)

References 20 publications

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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%

Yb band parasitic lasing suppression in Er/Yb-co-doped pulsed fiber amplifier based on all-solid photonic bandgap fiber

et al. 2013

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A novel kind of all-solid photonic bandgap fiber (AS-PBGF) has been used in the master oscillator power amplifier structured Er/Yb-co-doped pulsed fiber amplifier to suppress the Yb band parasitic lasing for the power scaling and safety operation. To the best of our knowledge, this is the first time to report the use of AS-PBGF to suppress the Yb band parasitic lasing. The experimental results show that the Yb band parasitic lasing has been suppressed efficiently and the amplifier power has been raised dramatically with the utilization of AS-PBGF. An output power of 2.66 W was finally obtained without any unwanted parasitic lasing.

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Section: Introductionmentioning

confidence: 99%

Yb band parasitic lasing suppression in Er/Yb-co-doped pulsed fiber amplifier based on all-solid photonic bandgap fiber

et al. 2013

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“…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.…”

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confidence: 99%

High-power all-fiber 1.0/1.5 μm dual-band pulsed MOPA source

Liu

et al. 2018

Chin. Opt. Lett.

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The simultaneous dual-band pulsed amplification is demonstrated from an Er/Yb co-doped fiber (EYDF), and consequently a high-power all-fiber single-mode 1.0/1.5 μm dual-band pulsed master oscillator power amplifier (MOPA) laser source is realized for the first time, to the best of our knowledge, based on one singlegain fiber. The simultaneous outputs at 1061 and 1548 nm of the laser source have the maximum powers of 10.7 and 25.8 W with the pulse widths of 9.5 ps and 2 ns and the pulse repetition rates of 178 and 25 MHz, respectively. This EYDF MOPA laser source is seeded by two separate preamplifier chains operating at 1.0 and 1.5 μm wavebands. The dependence of the laser output powers on the length of the large-mode area EYDF, the ratio of the powers of the two signals launched into the booster amplifier, and the wavelength of the 1 μm seed signal are also investigated experimentally.

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“…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.…”

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confidence: 99%

Highly efficient Er/Yb-codoped fiber amplifier with an Yb-band fiber Bragg grating

et al. 2015

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In this Letter, a high-power Er/Yb-codoped fiber amplifier (EYDFA) with a high-reflection Yb-band fiber Bragg grating (FBG) at the pump end is experimentally investigated. The FBG was inscribed on a piece of double-clad fiber with a center wavelength of 1032 nm. Due to the selective reflection of the backward Yb-band amplified spontaneous emission (Yb ASE) by the FBG, a co-pump-propagating Yb-band auxiliary signal was generated. Because of the stimulated amplification and reabsorption of the auxiliary signal, the Yb ASE was dramatically suppressed and the pump conversion efficiency (PCE) of the EYDFA was notably improved. An output power of 6.48 W was achieved at a pump power of 16.5 W, which is equivalent to a PCE of ∼39%. The slope efficiency relative to applied pump power was ∼40%. The maximum output power was improved ∼20% because of the introduction of the FBG.

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Numerical Investigation of the ASE and Power Scaling of Cladding-Pumped Er–Yb Codoped Fiber Amplifiers

Cited by 71 publications

References 20 publications

Yb band parasitic lasing suppression in Er/Yb-co-doped pulsed fiber amplifier based on all-solid photonic bandgap fiber

Yb band parasitic lasing suppression in Er/Yb-co-doped pulsed fiber amplifier based on all-solid photonic bandgap fiber

High-power all-fiber 1.0/1.5 μm dual-band pulsed MOPA source

Highly efficient Er/Yb-codoped fiber amplifier with an Yb-band fiber Bragg grating

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