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Characterization of polarization dependent loss in optical fibres and optical components in the presence of polarization mode dispersion

机译：在存在偏振模色散的情况下表征光纤和光学组件中的偏振相关损耗

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摘要

In this study, the Jones matrix eigenanalysis (JME), optical spectrum analyzer (OSA) and polarization scrambling methods were used to investigate polarization dependent loss (PDL) in the presence of polarization mode dispersion (PMD) in optical components and fibres. The PDL measurements were conducted both in the laboratory and in the field. For field measurements, a buried link (28.8 km) and an aerial fibre (7.1 km) were extensively studied. The findings obtained from these studies are very important for network operators who must assess the impact of PDL on the network reliability. The three different PDL measurement methods (JME, OSA and polarization scrambling) were compared and their PDL values were found to agree very well at the selected wavelength of 1550 nm. Concatenation of PDL components showed that as expected, PDL increase as the number of PDL components were added. The interactions between PMD and PDL measurements were analyzed. A PMD/PDL emulator was constructed. We observed that PMD decreased while PDL increased. The PMD decrease was a result of the PMD vector cancellation enhanced by the randomly distributed mode coupling angles while PDL increase was a result of each PM fibre segments contributing to the overall global PDL. It was observed that the presence of PMD in a link containing PDL, results in PDL being wavelength dependent and this resulted in the extraction of the PMD information from the PDL data. PDL was found to be Maxwellian distributed when considering low values of PMD. High PMD values resulted in the PDL distribution deviating from Maxwellian. Long-term PDL and PMD (average DGD) measurements indicated that the PDL and PMD varied slowly with time and wavelength for both the laboratory and field measurements. It was observed that the BER increase as both PDL and PMD increased for simulated optical link.
机译：在这项研究中，琼斯矩阵本征分析（JME），光谱分析仪（OSA）和偏振加扰方法用于研究在光学组件和光纤中存在偏振模色散（PMD）的情况下偏振相关损耗（PDL）。 PDL测量是在实验室和现场进行的。为了进行现场测量，对埋藏式连接线（28.8公里）和空中光纤（7.1公里）进行了广泛的研究。从这些研究中获得的发现对于必须评估PDL对网络可靠性的影响的网络运营商来说非常重要。比较了三种不同的PDL测量方法（JME，OSA和偏振加扰），发现它们的PDL值在选定的1550 nm波长下非常吻合。 PDL组件的串联显示，正如预期的那样，PDL随着添加的PDL组件数量的增加而增加。分析了PMD和PDL测量之间的相互作用。构造了PMD / PDL仿真器。我们观察到PMD降低而PDL增加。 PMD减小是由于随机分布模式耦合角增强了PMD矢量抵消，而PDL增大是每个PM光纤段对总体全局PDL做出贡献的结果。据观察，在包含PDL的链路中PMD的存在会导致PDL与波长相关，从而导致从PDL数据中提取PMD信息。当考虑低PMD值时，发现PDL是Maxwellian分布的。高PMD值导致PDL分布偏离Maxwellian。长期的PDL和PMD（平均DGD）测量表明，对于实验室和现场测量，PDL和PMD随时间和波长缓慢变化。观察到，对于模拟光链路，BER随着PDL和PMD的增加而增加。

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    Pelaelo Gaoboelwe;

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  • 年度 2008
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