Abstract
Abstract In this paper, a curvature sensor based on fiber ring laser with Sagnac loop is proposed and experimentally demonstrated. The Sagnac loop is inserted into a fiber ring laser used as the sensing element and the filter. The intracavity sensing is induced in the fiber laser with the filtering characteristic of the Sagnac loop modulated by the curvature. The intracavity sensing system is used to narrow the corresponding 3-dB band-width and enhance the resolution of the curvature sensor. With the intracavity intensity modulation method, the output power of the fiber ring laser sensor will change with an increase in curvature. The curvature range from 0 m−1 to 5.6865 m−1 has been measured and the highest curvature resolution of 6 × 10−8 m−1 is obtained. Based on the intracavity sensing system, the curvature resolution level has been enhanced from 10−4 m−1 to 10−8 m−1. The stability and measurement errors of the system are also studied and analyzed.
Published Version
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
