• CO2 laser-inscribed low-cost, shortest-period long-period fibre grating in B–Ge co-doped fibre for high-sensitivity strain measurement

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      https://www.ias.ac.in/article/fulltext/pram/082/02/0373-0377

    • Keywords

       

      Fibre-optic sensors; turnaround point-long-period fibre grating; strain.

    • Abstract

       

      We have developed high sensitivity long-period fibre gratings (LPGs) in B–Ge codoped fibre for strain sensing application. These LPGs are shortest grating period (180 𝜇m) LPGs inscribed in B–Ge co-doped fibre using CO2 laser-based grating inscription set-up. Strain sensitivity of 1.77 dB/mε has been obtained for attenuation band corresponding to the turnaround point mode. TAP operation of LPG facilitates intensity-based detection using simple optical power meter instead of wavelength-based detection.

    • Author Affiliations

       

      Smita Chaubey1 Sanjay Kher1 Jai Kishore1 S M Oak1

      1. Raja Ramanna Centre for Advanced Technology, Indore 452 013, India
    • Dates

       
  • Pramana – Journal of Physics | News

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