A strain gradient in an optical fibre Bragg grating is realised by mounting the grating in a yielding, soft, medium (e.g. glue) such that tension applied to one end will be gradually relieved over a distance. This strain gradient results in a grating chirp that can be dynamically controlled by varying the applied tension.
Inspec keywords: diffraction gratings; optical fibres; optical fibre fabrication
Other keywords:
Subjects: Fibre optics; Optical fibre fabrication, cladding, splicing, joining; Gratings, echelles; Other fibre optical devices and techniques
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