Szczupak Bogusław, Mądry Mateusz, Bernaś Marta, Kozioł Paweł, Skorupski Krzysztof, Statkiewicz-Barabach Gabriela
Department of Telecommunications and Teleinformatics, Faculty of Information and Communication Technology, Wroclaw University of Science and Technology, Wybrzeże Wyspiańskiego 27, 50-370 Wrocław, Poland.
Department of Optics and Photonics, Faculty of Fundamental Problems of Technology, Wroclaw University of Science and Technology, Wybrzeże Wyspiańskiego 27, 50-370 Wrocław, Poland.
Sensors (Basel). 2024 Sep 15;24(18):5980. doi: 10.3390/s24185980.
This article presents a comprehensive study on the impact of irradiation optical fiber cores with a femtosecond-pulsed laser, operating at a wavelength of 1030 nm, on the signal amplitude in Rayleigh scattering-based optical frequency domain reflectometry (OFDR). The experimental study involves two fibers with significantly different levels of germanium doping: the standard single-mode fiber (SMF-28) and the ultra-high numerical aperture fiber (UHNA7). The research findings reveal distinct characteristics of reflected and scattered light amplitudes as a function of pulse energy. Although different amplitude changes are observed for the examined fibers, both can yield an enhancement of amplitude. The paper further investigates the effect of fiber Bragg grating inscription on the overall amplitude of reflected light. The insights gained from this study could be beneficial for controlling the enhancement of light scattering amplitude in fibers with low or high levels of germanium doping.
本文介绍了一项关于用波长为1030nm的飞秒脉冲激光辐照光纤纤芯对基于瑞利散射的光频域反射法（OFDR）中信号幅度影响的综合研究。实验研究涉及两根锗掺杂水平差异显著的光纤：标准单模光纤（SMF-28）和超高数值孔径光纤（UHNA7）。研究结果揭示了反射光和散射光幅度随脉冲能量变化的不同特性。尽管在所研究的光纤中观察到了不同的幅度变化，但两者都能实现幅度增强。本文进一步研究了光纤布拉格光栅写入对反射光总幅度的影响。从这项研究中获得的见解可能有助于控制低锗掺杂或高锗掺杂光纤中光散射幅度的增强。
