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Multi-wavelength generation? Based on RSOA for passive optical networks

This paper presents wavelength-generating scheme using reflective semiconductor optical amplifier (RSOA) and a delay interferometer (DI). The proposed method presents simplified multi-wavelength generation scheme by establishing promising laser structure assimilated with a fiber coupler, an optical circulator with the bandwidth variable tunable filter and DI. The gain medium leapfrogs intrinsic properties of RSOA with the DI and the tunable filter to generate four stable wavelengths at room temperature. Experimental results adequately highlight output stability with the tunable wavelengths and channels spacing within the L-band applicable for passive optical networks (PONs).