CO2 laser-written long-period fiber gratings in a Germanium-Boron codoped fiber : Effects of applying tension during the writing process

Research output: Journal Publications and Reviews (RGC: 21, 22, 62)21_Publication in refereed journal

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Original languageEnglish
Pages (from-to)1456-1458
Journal / PublicationIEEE Photonics Technology Letters
Issue number19
Publication statusPublished - 2009


In this letter, we investigate CO2 laser writing of long-period fiber gratings in a germanium-boron codoped fiber subjected to applied axial tension. We discover that, with sufficient tension, the rejection bands for axially symmetric cladding modes can be suppressed, while new rejection bands for nonaxially symmetric cladding modes are generated. We can keep on erasing and generating these rejection bands by removing and applying the tension along the fiber alternately during the writing process. © 2009 IEEE.

Research Area(s)

  • Gratings, Long-period fiber gratings (LPFGs), Optical fiber devices, Optical fiber filters, Optical filters