Distributed temperature sensing data and OTDR data from "Impacts of hydrostatic pressure on Distributed Temperature Sensing Optical Fibers for extreme ocean and ice environments" by Tyler, Silvia, Jakuba, Durante and Winebrenner accepted to Photonics June 2024

The data set uploaded here provides raw data from experiments designed to test the impact of high pressure on Raman backscatter distributed temperature sending. The work is under consideration for the journal Photonics.In this work, we demonstrate the viability of unreinforced fiber tethers (bare fiber) for Raman-based distributed temperature sensing in deep ocean and deep ice environments. High pressure testing of single mode and multimode optical fiber showed little to no changes in light attenuation over pressures from atmospheric to 600 bars. Most importantly the differential attenuation between Stokes and anti-Stokes frequencies, critical for the evaluation of distributed temperature sensing, was shown to be insignificantly affected by fluid pressures over the range of pressures tested for single mode fiber, and only very slightly affected in multimode fiber. For multimode fiber deployments to ocean depths as great at 6000 m, the effect of pressure dependent differential attenuation was shown to impact the estimated temperatures by only 0.15 ^oK. These new results indicate that bare fiber tethers, in addition to use for communication can be used for distributed temperature or strain in fibers subjected to large depth (pressure) varying environments such as deep oceans, glaciers and potentially the icy moons of Saturn and Jupiter.<br>

上传至此的数据集，提供了用于测试高压对拉曼背散射分布式温度传感（Raman backscatter distributed temperature sensing）影响的实验原始数据。本研究成果目前正在《Photonics》期刊审稿中。本研究验证了无增强光纤系绳（裸光纤，bare fiber）应用于深海、深冰环境下拉曼基分布式温度传感的可行性。针对单模光纤（single mode fiber）与多模光纤（multimode optical fiber）的高压测试结果显示，在常压至600巴的压力范围内，光纤的光衰减几乎无变化。尤为关键的是，对于分布式温度传感评估至关重要的斯托克斯（Stokes）与反斯托克斯（anti-Stokes）频率间的差分衰减，在单模光纤的测试压力区间内几乎不受流体压力的影响；而在多模光纤中，该差分衰减仅受到极轻微的影响。当多模光纤部署于6000米深海环境时，压力相关的差分衰减对估算温度的影响仅为0.15开尔文。上述新研究结果表明，裸光纤系绳除可用于通信外，还可应用于受大深度（压力）变化环境影响的光纤的分布式温度或应变传感，这类环境包括深海、冰川，以及潜在的土星与木星的冰卫星。