Abstract
We propose and demonstrate an eight-wavelength switchable laser with approximately 40 pm wavelength spacing using a polarization maintaining fiber Bragg grating (PMFBG). This PMFBG has a specially designed quadruple-transmission-band. When it is used in a fiber ring configuration, four wavelengths can be switched in one state of polarization, while the other four can oscillate in the corresponding orthogonal state.
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