Cladding Pumped EDFAs with Annular Erbium Doping

Matte-Breton, Charles; Chen, H.; Fontaine, Nicolas K.; Ryf, Roland; Essiambre, R.-J.; Messaddeq, Younès; LaRochelle, Sophie

doi:10.1364/cleo_at.2018.jth2a.133

Cited by 3 publications

(3 citation statements)

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“…In Fiber B and C, because some Er 3+ are incorporated in the cladding, silica is replaced by alumino-silicate to increase the solubility of the Er 3+ in this region. Therefore, the region between r=4.5 µm and r=9.5 µm has a refractive index of 1.4460, which is a reasonable value for alumino-silicate to accept an Er 3+ concentration of 1x10 25 ions/m 3 . For Fiber B, the erbium doping is only found between r=6 µm and r=9.5 µm while, for comparison purposes, Fiber C is doped with erbium from r=0 µm to r=9.5 µm.…”

Section: Erbium Doping Profilesmentioning

confidence: 92%

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Demonstration of an erbium-doped fiber with annular doping for low gain compression in cladding-pumped amplifiers

et al. 2018

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We present the design and characterization of a cladding-pumped amplifier with erbium doping located in an annular region near the core. This erbium-doped fiber is proposed to reduce gain saturation, leading to smaller gain compression when compared to uniform core doping. Through numerical simulations, we first compare the performance of three fibers with different erbium doping profiles in the core or the cladding. When the doped fibers are operated at the optimum length, results show that the smaller overlap of the signal mode field with the annular erbium doping region leads to higher gain and lower saturation of the amplifier. A single-core erbium-doped fiber with an annular doping and a D-shaped cladding was fabricated. Measurements demonstrate less than 4 dB of gain compression over the C-band for input power ranging from-40 dBm to 3 dBm. Small gain compression EDFAs are of interest for applications that require input channel reconfiguration. Higher gain and saturation output power are also key issues in cladding-pumped multi-core amplifiers.

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Section: Erbium Doping Profilesmentioning

confidence: 92%

“…In this paper, we expand on our initial report in [25] and present here in detail the optimization of the doped fiber design and compare simulation results to experimental measurements. The paper is focused on optimizing the erbium doping profile to reduce gain compression in a single-mode fiber amplifier.…”

Section: Introductionmentioning

confidence: 99%

Demonstration of an erbium-doped fiber with annular doping for low gain compression in cladding-pumped amplifiers

et al. 2018

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“…n =1.4502 and ρ=1.5x10 25 ions/m 3 for r < 4.1 µm. In fi ber B, erbium doping is located in the cladding in order to increase the saturation input power and minimize gain compression [5]. Fig.…”

Section: Fiber Parametersmentioning

confidence: 99%