Saber Jalilpiran, Jacques Lefebvre, Younes Messaddeq, Sophie Larochelle
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引用次数: 0
Abstract
The precise characterization of signal excited-state absorption (ESA) in erbium-doped fibers (EDFs) is achieved through an ON/OFF pumping scheme, using a supercontinuum source in conjunction with a bandpass tunable filter to generate the input signal. Normalizing the ESA profile, by the value of the ESA peak, allows sample comparisons independent of their erbium concentration. This method directly assesses the impact of ESA on the net gain within the 1600-1730 nm range, providing a significant means to study how to expand the gain bandwidth toward longer wavelengths. As an illustrative application, we investigate the effect of chemical elements, such as Er, Al, and Ba, and their concentrations on ESA. We then optimize the Al content to enhance erbium solubility without inadvertently inducing detrimental ESA effects. This advancement in the ESA characterization presents substantial advantages for the pursuit of efficient extended L-band erbium-doped fiber amplifiers (EDFAs).
掺铒光纤（EDF）中信号激发态吸收（ESA）的精确表征是通过ON/OFF泵浦方案实现的，该方案使用超连续光源和带通可调谐滤波器来产生输入信号。根据 ESA 峰值对 ESA 曲线进行归一化处理，可以对不同铒浓度的样品进行比较。这种方法可直接评估 ESA 对 1600-1730 纳米范围内净增益的影响，为研究如何将增益带宽扩展到更长波长提供了重要手段。作为示例应用，我们研究了 Er、Al 和 Ba 等化学元素及其浓度对 ESA 的影响。然后，我们优化了铝的含量，以提高铒的溶解度，同时又不会无意中诱发有害的 ESA 效应。在 ESA 表征方面取得的这一进展为追求高效扩展 L 波段掺铒光纤放大器 (EDFAs) 带来了巨大优势。
期刊介绍：
The Optical Society (OSA) publishes high-quality, peer-reviewed articles in its portfolio of journals, which serve the full breadth of the optics and photonics community.
Optics Letters offers rapid dissemination of new results in all areas of optics with short, original, peer-reviewed communications. Optics Letters covers the latest research in optical science, including optical measurements, optical components and devices, atmospheric optics, biomedical optics, Fourier optics, integrated optics, optical processing, optoelectronics, lasers, nonlinear optics, optical storage and holography, optical coherence, polarization, quantum electronics, ultrafast optical phenomena, photonic crystals, and fiber optics. Criteria used in determining acceptability of contributions include newsworthiness to a substantial part of the optics community and the effect of rapid publication on the research of others. This journal, published twice each month, is where readers look for the latest discoveries in optics.
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