Wavelength and power stabilization of a three wavelength Erbium doped fiber laser using a nonlinear optical loop mirror

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This paper describes the use of a Nonlinear Loop Mirror to achieve wavelength and power stabilization in a three wavelength Erbium doped fiber ring laser. The laser uses three fiber Bragg grating reflectors as the oscillation wavelength selecting filters. The influence of the length of the Nonlinear Loop Mirror (NOLM) on the laser stability both in terms of wavelength and laser output power was investigated. The laser performance was improved by changing the length of the Loop Mirror to an optimal length and three simultaneous wavelength oscillations with acceptable power and wavelength stability were achieved.