Packaged inline cascaded optical micro-resonators for multi- parameter sensing

Kavungal, Vishnu, Farrell, Gerald, Wu, Qiang, Kumar Mallik, Arun, Shen, Changyu and Semenova, Yuliya (2019) Packaged inline cascaded optical micro-resonators for multi- parameter sensing. Optical Fiber Technology, 50. pp. 50-54. ISSN 1068-5200

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A novel design principle and fabrication method for whispering gallery mode optical multiple-resonator arrays have been proposed and demonstrated. The proposed design involves an inline cascade of optical micro-resonators (ICOMRs) coupled to multiple tapered sections along a single optical fiber. The multiple micro-resonators can be used for sensing of several parameters or a single parameter at multiple locations simultaneously. A simple and robust packaging technique has been developed ensuring stable and repeatable operation of the device. In order to demonstrate the capability of simultaneous multi- parameter sensing of the proposed ICOMRs structure, strain and temperature measurements were carried out using an inline cascade of two cylindrical micro-resonators: a tapered polymer optical fiber based micro-cylinder and a polydimethylsiloxane coated silica cylindrical micro-resonator. An Axial tensile strain sensitivity of 1.4 ± 0.04 pm/με and temperature sensitivity of 330 ± 18 pm/°C have been demonstrated experimentally. The proposed ICOMRs design has many potential applications in distributed sensing, lab-on-a-fiber technology and optical communications.

Item Type: Article
Uncontrolled Keywords: Whispering gallery modes, Microcavity devices, Fiber optics sensors, Multisensor methods
Subjects: H600 Electronic and Electrical Engineering
Department: Faculties > Engineering and Environment > Mathematics, Physics and Electrical Engineering
Depositing User: Elena Carlaw
Date Deposited: 14 Mar 2019 14:12
Last Modified: 31 Jul 2021 19:33

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