• DocumentCode
    1368692
  • Title

    Flat-top, wide-passband filter fabricated by CO2 laser engraved D-shaped structure within linearly chirped fibre Bragg grating

  • Author

    Dong, Xiaochun ; Zhao, Rong

  • Author_Institution
    State Key Lab. of All Opt. Network & Adv. Telecommun. Network, Beijing Jiaotong Univ., Beijing, China
  • Volume
    45
  • Issue
    19
  • fYear
    2009
  • Firstpage
    993
  • Lastpage
    994
  • Abstract
    A new, yet simple method for fabricating high-quality bandpass filters is proposed. Utilising the CO2 laser irradiation along the linearly chirped fibre Bragg grating, a D-shaped structure is engraved and a bandpass filter with nearly 100% transmissivity, >0.6 nm 3 dB bandwidth, <0.1 dB flat-top ripple and >71 dB/nm slope at 3 dB amplitude response is obtained.
  • Keywords
    Bragg gratings; band-pass filters; laser beam applications; optical fibre fabrication; optical fibre filters; CO2 laser irradiation; D-shaped structure; amplitude response; flat-top ripple; flat-top wide-passband filter; linearly chirped fibre Bragg grating; transmissivity;
  • fLanguage
    English
  • Journal_Title
    Electronics Letters
  • Publisher
    iet
  • ISSN
    0013-5194
  • Type

    jour

  • DOI
    10.1049/el.2009.1970
  • Filename
    5238500
    • Link To Document
    https://search.isc.ac/dl/search/defaultta.aspx?DTC=49&DC=1368692