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用紫外激光在氢载、高掺锗光纤中激起强烈的折射率扰动，形成菲涅耳反射器，制成了本征光纤双束干涉仪，并用温敏实验证明了这种菲涅耳反射器的存在，表明这种干涉仪可以用作传感器．
Using ultraviolet laser to induce strong refractive index perturbation in hydrogen-loaded and highly doped germanium-doped optical fiber, the Fresnel reflector was formed and an intrinsic fiber dual-beam interferometer was fabricated. The temperature-sensitivity experiment proved that this Fresnel reflection The existence of the device, indicating that this interferometer can be used as a sensor.