Abstract
Tunable single frequency Er-doped fibre lasers have applications in telecommunications, remote sensing, and high resolution spectroscopy. Several different approaches have been taken to achieve this goal using fibre Fabry-Pérot étalons1 or intracore Bragg reflectors.2 With fibre Bragg gratings, for example, tunability is achieved by physically altering the grating periodicity.2
© 1994 IEEE
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