Broad-range wavelength tunable chirped fibre grating

A fixed dispersion, wavelength tunable chirped fibre grating is demonstrated. The device which can compensate for 10 Gbit/s transmission over 100 km of standard fibre is able to electronically track the signal over a 0.51 nm wavelength range. Tuning ranges up to 1.7 nm have been demonstrated and 10 nm is expected.