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A wavelength scanning interferometric technique has been used to provide phase dispersion and time delay measurements of photorefractive fibre gratings with sub-picosecond time delay and 3 pm wavelength resolutions for the first time. Chirped fibre grating filters for dispersion compensation in long fibre telecommunications links have been fully characterised.
Inspec keywords: optical fibre communication; optical communication equipment; optical fibre dispersion; diffraction gratings; optical fibres; optical fibre filters; photorefractive effect
Other keywords:
Subjects: Optical propagation, dispersion and attenuation in fibres; Optical coatings and filters; Optical communication devices, equipment and systems; Fibre optics; Other fibre optical devices and techniques; Gratings, echelles; Spectral and other filters; Optical communication