Experimental realization of a PbSe quantum dot doped fiber amplifier with ultra-bandwidth characteristic
Experimental realization of a PbSe quantum dot doped fiber amplifier with ultra-bandwidth characteristic
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超带宽特性的PbSe量子点掺杂光纤放大器的实验实现
DOI：
10.1016/j.optcom.2016.08.036
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发表时间：
2017-01-01
影响因子：
2.4
通讯作者：
Cheng, Xiaoyu
中科院分区：
文献类型：
--
作者：
Cheng, Cheng;Hu, Nengshu;Cheng, Xiaoyu
采用PbSe量子点作为增益介质，在紫外光凝胶中掺杂，实验研究了一种具有超宽带特性和低噪声的掺PbSe量子点光纤放大器。QDFA由掺QD光纤、波分复用器、980 nm泵浦LD和隔离器组成。在1250-1370 nm波长范围内，对直径为50 μ m的掺杂光纤，测得的泵浦阈值为62 mW，1dB平坦带宽为90 nm，最大信号增益为12 dB，噪声系数为3.68- 3.77dB。与目前流行的掺铒光纤放大器（EDFA）相比，实现的QDFA具有更宽的带宽，这是由于宽频带的发射光谱取决于量子点的尺寸分布和更低的噪声。本文提出的QDFA为密集波分复用系统中日益增长的宽带光纤放大器需求提供了一种替代方案。(C)2016爱思唯尔B. V.保留所有权利。
Using PbSe quantum dots (QDs) as the gain medium doped in UV-gel, we experimentally demonstrate a PbSe QDs doped fiber amplifier (QDFA) with ultra-bandwidth characteristics and low noise level. The QDFA consists of QD doped fiber, wavelength division multiplexer, 980 nm pumping LD, and isolator. For the doped fiber in 50 gm diameter, the observed pumping threshold is 62 mW, 1 dB flat bandwidth is 90 nm, the maximum signal gain is 12 dB, and noise figure is 3.68-3.77 dB in the wavelength region of 1250-1370 nm. The realized QDFA possesses the wider bandwidth due to the broadband-emission spectrum depending on the size distribution of QDs and lower noise compared with the popular erbium doped fiber amplifiers (EDFAs). The QDFA presented in this paper provides an alternative solution to the growing demand of the broadband fiber amplifiers in dense wavelength division multiplexing systems. (C) 2016 Elsevier B.V. All rights reserved.