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      Permanent link:
      https://www.ias.ac.in/article/fulltext/pram/082/02/0255-0258

    • Keywords

       

      Tilted fibre Bragg grating; second harmonic of copper vapour laser.

    • Abstract

       

      This paper reports the study on development of tilted fibre Bragg gratings using highly coherent 255 nm radiation, obtained from the second harmonic generation (SHG) of copper vapour laser (CVL). The transmission and reflection spectra of the tilted fibre Bragg gratings (TFBG) were studied for the tilt angles of 0° (normal FBG), 1°, 3° and 4° between the fibre axis and the interference fringe plane. It was observed that as the angle of fibre axis and phase mask increased, the main Bragg peak shifted towards the higher wavelength and transmission dip decreased. The transmission dip of the cladding mode first increased and then decreased after reaching a maximum with the increase in the tilt angle.

    • Author Affiliations

       

      O Prakash1 J Kumar1 R Mahakud1 U Kumbhkar1 S V Nakhe1 S K Dixit1

      1. R&D C-1 Block, Raja Ramanna Centre for Advanced Technology, Indore 452 013, India
    • Dates

       
  • Pramana – Journal of Physics | News

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      Posted on July 25, 2019

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