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      https://www.ias.ac.in/article/fulltext/sadh/032/05/0513-0519

    • Keywords

       

      Fibre sensor; long period gratings; fibre brag grating; refractive index.

    • Abstract

       

      Long Period Gratings (LPGs) have been developed using carbon dioxide laser in a standard optical fibre. LPGs with a periodicity of 600 𝜇m and grating length of 24 mm have been inscribed on standard single mode fibre. Such gratings have been used in designing temperature sensors and temperature is monitored up to 80°C. The sensitivity of such type of sensor is 0·06 nm/° C where as for standard Fibre Bragg Grating (FBG) it is 0·011 nm/°C. The LPG performance is also evaluated after 𝛾-ray irradiation for total dose of 5 KGy and has not shown any effect on transmission spectrum.

    • Author Affiliations

       

      Smita Chaubey1 Purushottam Joshi1 Manoj Kumar2 Rajesh Arya2 A K Nath2 Sanjay Kher1

      1. Fibre Optics Lab, SSLD, Raja Ramanna Centre for Advanced Technology, Indore 450 213
      2. Solid State Laser Division, Raja Ramanna Centre for Advanced Technology, Indore 450 213
    • Dates

       
  • Sadhana | News

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