Inspec keywords: optical fibres; optical harmonic generation; nonlinear optical susceptibility; diffraction gratings

Other keywords: spectral bandwidth; self written grating; fused SiO₂; 0.5 percent; second harmonic generation in fibre; second order nonlinear susceptibility grating; SHG; phase-matched generation of second-harmonic; weak non-phase-matched SH signal; axially periodic pattern of colour centres; quadrupole polarisation; mechanism

Subjects: Nonlinear optics and devices; Optical harmonic generation, frequency conversion, parametric oscillation and amplification; Gratings, echelles; Fibre optics and fibre waveguides; Fibre optics