Tuneable and switchable dual wavelength lasers using optical fibre Bragg grating external cavities

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Tuneable and switchable dual wavelength lasers using optical fibre Bragg grating external cavities

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Two novel external cavity lasers are demonstrated experimentally. The first utilises a Bragg grating fabricated in highly birefringent optical fibre and offers the ability to switch between modes that are separated in polarisation and wavelength. The second utilises two spatially separate Bragg gratings fabricated in mono-mode fibre. Both can be used for tunable beat frequency generation.

Inspec keywords: fibre lasers; Bragg gratings; laser cavity resonators; laser stability; birefringence; laser tuning; laser modes

Other keywords: highly birefringent optical fibre; high birefringence fibre; polarisation domain switching; mode switching; spatially separate Bragg gratings; tunable beat frequency generation; external cavity lasers; tunable switchable dual wavelength lasers; mono-mode fibre; wavelength domain switching; spectral stability; optical fibre Bragg grating external cavities

Subjects: Laser resonators and cavities; Fibre optics; Laser beam modulation, pulsing and switching; mode locking and tuning; Laser resonators and cavities; Fibre lasers and amplifiers; Laser beam modulation, pulsing and switching; mode locking and tuning; Fibre lasers and amplifiers; Gratings, echelles; Design of specific laser systems

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