Amplification of fibre Bragg grating reflectivity by post-writing exposure with a 193 nm ArF laser

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Amplification of fibre Bragg grating reflectivity by post-writing exposure with a 193 nm ArF laser

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The reflectivity of weak in-fibre gratings (a few percent reflectivity) written by an ArF laser illuminated phase mask can be dramatically enhanced (reaching ≥ 95%) by subsequent exposure using a uniform ArF laser beam. This new effect offers the possibility of post-writing control of grating properties.

Inspec keywords: optical fibres; diffraction gratings; optical workshop techniques; laser beam applications; reflectivity

Other keywords: laser illuminated phase mask; fibre Bragg grating reflectivity; ArF; in-fibre gratings; post-writing control; uniform ArF laser beam; 193 nm; post-writing exposure; amplification; grating properties

Subjects: Gratings, echelles; Optical fabrication, surface grinding; Other fibre optical devices and techniques; Laser applications; Fibre optics

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