Abstract
Time-division multiplexed interrogation of three nearly identical fiber Bragg gratings (FBGs) is reported. A directly modulated distributed-feedback laser array is used as a frequency-scanning pulse source. Weak reflections from the FBGs are temporally resolved as beat signals with a high signal-to-noise ratio using heterodyne detection. Reflection spectra from the FBGs with a reflectivity of 1% and spatial intervals of 4.5 m are observed. Finally, the application of this technique to systems with 20 identical FBGs is discussed.
Sign-in/Register to access full text options 
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.
