Inspec keywords: refractive index; optical fibres; diffraction gratings; optical communication equipment

Other keywords: mechanical scratching; cladding surface; long-period grating; index matching oils; optical fibres; spectral behaviour; resonant peak

Subjects: Optical communication devices, equipment and systems; Fibre optics; Optical communication; Optical fibre fabrication, cladding, splicing, joining; Gratings, echelles