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Highly uniform multiwavelength erbium-doped fiber ring laser with an intra-cavity sine phase modulator is demonstrated. The flat output spectrum is achieved by optimizing the cavity structure, modulation amplitude and frequency of the sine phase modulator. 15 lasing lines with wavelength spacing of 0.9 nm appear simultaneously and stably in power differences less than 2 dB and the side mode suppression...
An approximate analytic model of the P-doped cascaded Raman fiber lasers had been developed. The threshold pump powers for the first and the second Stokes radiation, output power, slope efficiency, and energy conversion efficiency had been solved and thus the optimization of the lasers could be discussed analytically. A fast numerical simulation of the laser based on the analytic model had also been...
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