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Simultaneous multiple wavelength lasing is demonstrated using a novel in-fiber comb fil-ter. The filter is based on a fiber Bragg grating asymmetrically located in a Sagnac loop. Two filters with four band-passes and five band-passes, respectively, were fabricated and applied to an erbium-doped fiber ring laser. Stable four-wavelength and five-wavelength laser operations have been demon-strated.
Simultaneous multiple wavelength lasing is demonstrated using a novel in-fiber comb fil-ter. The filter is based on a fiber Bragg grating asymmetrically located in a Sagnac loop. Respectively. Two filters with four band-passes and five band-passes, respectively, were were fabricated and applied to an erbium-doped fiber ring laser. Stable four-wavelength and five-wavelength laser operations have been demon-strated.