Wavelength selection and tuning by optical control in a two-segment erbium-doped fiber laser

A new method for controlling the wavelength of an Er/sup 3+/-doped fiber laser is proposed and demonstrated. Using two sections of dissimilar Er/sup 3+/-doped fiber and pumping them separately, switching among several distinct lasing wavelengths has been observed. Wavelength tuning over a range of 8 nm has also been achieved.<
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