Broadband 2 W Output Power Tandem Thulium-Doped Single Clad Fibre Amplifier for Optical Transmission at 2μm

Tench, Robert E.; Romano, Clément; Delavaux, Jean-Marc

doi:10.1109/ecoc.2017.8345861

Cited by 5 publications

(9 citation statements)

References 4 publications

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“…In this paper we report on the design, simulation, and experimental performance of a one-stage single clad TDFA using an L-band (1567 nm) shared fiber laser pump source, as a function of pump coupling ratio, active fiber length, pump power, and signal wavelength. Our one-stage TDFA data compare well with recently reported performance of multi-stage, multi-pump amplifiers [2]. In addition, the simplicity of the single clad pump shared design and its potential for cost reduction offer a broad selection of performance for different applications.…”

Section: Introductionsupporting

confidence: 81%

“…Co-pump Counter-pump The curves in Figure 4 lead to the important observation that the output power scales linearly with increases in the pump power. Therefore saturated output powers much higher than the 2.6 W already demonstrated [2] can be achieved with this type of Thulium-doped fiber up to the stimulated Brillouin scattering (SBS) threshold which is estimated to be 10-20 W for a fiber length of 7 m [9].…”

Section: Active Fiber Length L (M)mentioning

confidence: 84%

“…Simplicity and optimization of design are critical for the practical realization of wide bandwidth, high power single clad Thulium-doped fiber amplifiers (TDFAs) for 2 µm telecommunications applications. Recent TDFAs [1,2] have reported 2 µm band amplifiers with output power > 2W, gain > 55 dB, noise figure < 4 dB, and optical bandwidth greater than 120 nm. While these designs achieve high optical performance, they employ two or more optical stages and multiple pump sources.…”

Section: Introductionmentioning

confidence: 99%

“…Section 4 compares measurement and simulation of the TDFA performance. Section 5 contrasts our simple TDFA design with performance of a two-stage, three-pump amplifier as reported previously in [2]. Finally, Section 6 discusses design parameter tradeoffs for different TDFA applications.…”

Section: Introductionmentioning

confidence: 99%

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Optimized design and performance of a shared pump single clad 2 µm TDFA

Tench

Romano

Delavaux

2018

Optical Fiber Technology

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Delavaux. Optimized design and performance of a shared pump single clad 2 µm TDFA. Optical Fiber Technology, Elsevier, 2018, 42, pp. AbstractWe report the design, experimental performance, and simulation of a single stage, co-and counter-pumped Tmdoped fiber amplifier (TDFA) in the 2 μm signal wavelength band with an optimized 1567 nm shared pump source. We investigate the dependence of output power, gain, and efficiency on pump coupling ratio and signal wavelength. Small signal gains of >50 dB, an output power of 2 W, and small signal noise figures of <3.5 dB are demonstrated. Simulations of TDFA performance agree well with the experimental data. We also discuss performance tradeoffs with respect to amplifier topology for this simple and efficient TDFA.

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Section: Introductionsupporting

confidence: 81%

Section: Active Fiber Length L (M)mentioning

confidence: 84%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Optimized design and performance of a shared pump single clad 2 µm TDFA

Tench

Romano

Delavaux

2018

Optical Fiber Technology

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“…We have already demonstrated with both single clad and double clad Thulium-doped fibers (TDF) that fundamental characterization of the active fiber, combined with a three level model, leads to good agreement between simulations and experimental data [1][2][3] . Based on these results and our simulation software, we have developed a hybrid TDFA that provides broadband and high output power with a low noise figure and a large dynamic range.…”

Section: Introductionmentioning

confidence: 90%

20-W 1952-nm tandem hybrid single and double clad TDFA

Romano

Tench²,

Delavaux³

2018

Fiber Lasers XV: Technology and Systems

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A simple engineering design is important for achieving high Thulium-doped amplifier (TDFA) performance such as good power conversion, low noise figure (NF), scalable output power, high gain, and stable operation over a large dynamic range. In this paper we report the design, performance, and simulation of two stage high-power 1952 nm hybrid single and double clad TDFAs. The first stage of our hybrid amplifier is a single clad design, and the second stage is a double clad design. We demonstrate TDFAs with an output power greater than 20 W with single-frequency narrow linewidth (i.e. MHz) input signals at both 1952 and 2004 nm. An optical 10 dB bandwidth of 80 nm is derived from the ASE spectrum. The power stage is constructed with 10 µm core active fibers showing a maximum optical slope efficiency greater than 50 %. The experimental results lead to a 1 dB agreement with our simulation tool developed for single clad and double clad TDFAs. Overall this hybrid amplifier offers versatile features with the potential of much higher output power.

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