We report a novel fiber tilt sensor based on a mobile microbubble inscribed in an ellipsoidal liquid-filled microcavity. When the tilt angle changes, the microbubble in the liquid can drift along the upper arc-shaped inwall of the microcavity and stay at a vertex to get a state of mechanical equilibrium. The drifting microbubble induces a drastic change on the optical path difference between the light beams in the microcavity and, consequently, on the reflection spectrum, which makes it a tilt angle sensitive element. The experimental results show that the tilt angle sensitivity is as high as 160.21 nm/deg, and the detection resolution of such a sensor can reach up to . Moreover, such a fiber tilt sensor is capable of distinguishing the tilt direction, since the movement of the microbubble is tilt direction dependent.
© 2017 Optical Society of AmericaFull Article | PDF Article
CorrectionsKunjian Cao, Yi Liu, and Shiliang Qu, "Ultrasensitive fiber tilt sensor based on a mobile inscribed microbubble along the arc-shaped inwall of the microcavity: publisher’s note," Opt. Lett. 43, 317-317 (2018)
12 December 2017: A typographical correction was made to the funding section.
More Like This
Xiang Ji, Yi Liu, Kunjian Cao, Yingying Liao, Yan Li, and Shiliang Qu
Opt. Lett. 45(8) 2303-2306 (2020)
Joel Villatoro, Amy Van Newkirk, Enrique Antonio-Lopez, Joseba Zubia, Axel Schülzgen, and Rodrigo Amezcua-Correa
Opt. Lett. 41(4) 832-835 (2016)
Kunjian Cao, Yi Liu, Changpeng Lang, Qinfeng Xu, and Yuan Zhao
Opt. Lett. 45(14) 3901-3904 (2020)