Reconfigurable and ultra-sensitive in-line Mach-Zehnder interferometer based on the fusion of microfiber and microfluid
Reconfigurable and ultra-sensitive in-line Mach-Zehnder interferometer based on the fusion of microfiber and microfluid
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基于微纤维和微流体融合的可重构超灵敏在线马赫曾德尔干涉仪
DOI：
10.1063/1.4913921
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发表时间：
2015-02-23
影响因子：
4
通讯作者：
Zhang, Chonglei
中科院分区：
文献类型：
--
作者：
Gao, Shecheng;Zhang, Weigang;Zhang, Chonglei
提出了一种基于微流腔（MFC）的可重构马赫-曾德尔干涉仪（MZI），该微流腔是通过在两段具有预先设计的横向偏移的单模光纤之间嵌入微光纤而构建的。 MFC 用作具有偏心环形横截面的干涉臂，并允许方便的样品（气体或液体）更换程序。微纤维充当另一个干扰臂，使所提出的装置易于重建，并且还增强了力灵敏度。通过将由 484 μm 长的 MFC 和直径 44 μm 的微纤维构建的 MZI 浸入不同的液滴中，证明了可重新配置性和超宽的调谐灵敏度范围。使用折射率为~1.44的液滴通过实验实现了34.65nm/°C (∼88 380nm/RIU)和-493.7nm/N (∼-590 pm/μe)的超高灵敏度。
A reconfigurable Mach-Zenhnder interferometer (MZI) based on a microfluidic cavity (MFC) constructed by embedding a microfiber between two segments of single-mode fibers with pre-designed lateral offset has been proposed and experimentally demonstrated. The MFC serves as an interference arm with an eccentric annular cross section and allows convenient sample (gas or liquids) replacement procedure. The microfiber works as the other interference arm that provides the proposed device with ease of reconstruction and also enhances the force sensitivity. The re-configurability and the ultra-wide tuning sensitivity range are demonstrated by immersing the MZI constructed with a 484 μm-long-MFC and a microfiber 44 μm in diameter in different droplets. Ultrahigh sensitivities of 34.65 nm/°C (∼88 380 nm/RIU) and −493.7 nm/N (∼−590 pm/μe) are experimentally achieved using a droplet with a refractive index of ∼1.44.