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20 W 1952 nm tandem hybrid single and double clad TDFA

机译：20 W 1952 nm串联混合单双覆层TDFA

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摘要

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 mu m 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.
机译：简单的工程设计对于实现高掺Th放大器（TDFA）性能至关重要，例如良好的功率转换，低噪声系数（NF），可扩展的输出功率，高增益以及在大动态范围内稳定运行。在本文中，我们报告了两级大功率1952 nm混合单双覆层TDFA的设计，性能和仿真。我们的混合放大器的第一阶段是单包层设计，第二阶段是双包层设计。我们演示了在1952和2004 nm处具有单频窄线宽（即MHz）输入信号的输出功率大于20 W的TDFA。从ASE光谱得出80 nm的10 dB光学带宽。功率级由10微米纤芯活性纤维构成，其最大光学斜率效率大于50％。实验结果与我们为单包层和双包层TDFA开发的仿真工具达成了1 dB的协议。总体而言，该混合放大器具有多种功能，具有更高的输出功率潜力。

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