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Optical fiber in-line Mach-Zehnder interferometer based on dual internal mirrors formed by a hollow sphere pair

机译:基于空心球对形成的双内镜的光纤直插式马赫曾德尔干涉仪

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摘要

We demonstrate a fiber in-line Mach-Zehnder interferometer based on dual internal mirrors formed by a hollow sphere pair and fabricated by femtosecond laser micromachining together with the fusion splicing technique. The hollow sphere surface adjacent to the fiber core can reflect part of the incident light beam to the air-cladding interface, where the light beam is reflected again before returning to the fiber core by another hollow sphere surface and recombining with the light beam remaining in the fiber core. Such an interferometer is miniature and robust, and is sensitive to environmental variations and allows simultaneous surrounding refractive index, temperature, and curvature measurement.
机译:我们演示了一种基于光纤的在线马赫曾德尔干涉仪,该干涉仪基于由中空球体对形成的双内部反射镜,并通过飞秒激光微加工和融合拼接技术制造而成。与纤维芯相邻的空心球表面可以将部分入射光束反射到空气包层界面,在此处,光束再次反射,然后再由另一个空心球表面返回到纤芯并与保留在其中的光束重新组合。纤维芯。这种干涉仪是微型且坚固的,并且对环境变化敏感并且允许同时测量周围的折射率,温度和曲率。

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