Abstract
The method for fast controllable tuning of radiation wavelength of fibre and waveguide lasers is proposed. Bragg grating written on waveguide electrooptic modulator is used both as a wavelength selective element and as laser cavity mirror. By applying control voltage to grating electrodes it is possible to shift grating reflectivity spectrum and, thus, to tune laser generation region. Further, frequency is continuously tuned within the grating reflectivity bandwidth by means of intracavity waveguide electrooptic cell. Spectral parameters of laser radiation as well as efficiency of generation and switching time have been calculated. The region of continuous tuning of such a laser for control voltage up to 5 V is about 0.2 nm and switching time is less than 0.7 ns.
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