掺铒光纤放大器的质量监控算法

L. Rapp
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引用次数: 4

摘要

增益平坦掺铒光纤放大器(EDFAs)已成为光通信系统和网络的关键部件。其中一个设备的故障将完全中断受影响链路上的数据传输,并给运营商造成重大的收入损失。因此,检测EDFA的性能下降是强制性的,因为放大器可以在失效之前更换。目前的技术只能检测泵浦激光器的老化。在本文中,提出了一种新的算法,允许检测各种退化机制。该算法允许在EDFA内监督完整的光路,并基于掺铒光纤增益特性的适当建模。因此,老化效应可以检测任意通道负载和功率分布在放大器级的输入。由于模型中考虑了泵浦激发态吸收(ESA)的影响,因此该算法也适用于采用大功率泵浦的放大级。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Quality surveillance algorithm for erbium-doped fiber amplifiers
Gain-flattened erbium-doped fiber amplifiers (EDFAs) have become key components for optical communication systems and networks. A failure of one of these devices interrupts data transmission on the affected link completely and causes significant loss of income to the carrier. Therefore, detection of the EDFA's performance degradation is mandatory, since amplifiers can be replaced before they fail. State of the art techniques can only detect aging of the pump laser. In this paper, a novel algorithm is presented that allows for the detection of various degradation mechanisms. The algorithm allows to supervise the complete optical path within the EDFA and is based on appropriate modeling of the gain characteristics of the erbium-doped fiber. Thus, aging effects can be detected for arbitrary channel loads and power distributions at the input of the amplifier stage. Since the effect of pump excited state absorption (ESA) is included in the model, the algorithm is also applicable to amplifier stages using high power pumps.
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