Article

Technique for wavelength selective fiber ring-laser

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Abstract

By controlling the transmitted resonant wavelength of a Fabry-Perot filter, stable single frequency laser output which is corresponding to one of the reflected wavelength of a five fiber Bragg grating wavelength division multiplexing (WDM) array as selective reflector was obtained with slope efficiency of -0.09. Experiment demonstrated that the lasing threshold is related to the grating's reflectivity and the gain of erbium-doped fiber at the working wavelength. Continuous tuning within the range of 1530 nm to 1575 nm could be achieved if the grating array was replaced by a board band reflective mirror.

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... In recent years, fiber lasers have attracted much attention because of their extensive applications. Various techniques have been proposed to realize a wavelength continuously tunable laser [1][2][3][4][5] , such as Fabry-Perot filters [2] , Mach-Zehnder interferometer [3] , acoustic-optic filters [4] , fiber gratings [5] , and so on. Unfortunately, these optical filtering devices except for fiber gratings are not made of fiber, and then they will have a large insertion loss in the fiber laser cavity. ...
... In recent years, fiber lasers have attracted much attention because of their extensive applications. Various techniques have been proposed to realize a wavelength continuously tunable laser [1][2][3][4][5] , such as Fabry-Perot filters [2] , Mach-Zehnder interferometer [3] , acoustic-optic filters [4] , fiber gratings [5] , and so on. Unfortunately, these optical filtering devices except for fiber gratings are not made of fiber, and then they will have a large insertion loss in the fiber laser cavity. ...
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