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Tunable multiwavelength fiber laser using a comb filter based on erbium-ytterbium co-doped polarization maintaining
Guoyong Sun1, Dae Seung Moon, Aoxiang Lin
1Department of Information and Communications, Gwangju Institute of Science and Technology (GIST)1 Oryong-dong, Buk-gu, Gwangju 500-712, Korea.
Abstract:
A tunable comb filter based on a fiber loop mirror setup, which incorporates a piece of pumped erbium-ytterbium co-doped polarization maintaining fiber, is newly presented. It is accomplished by controlling the pump power or adjusting a polarization controller in the loop mirror, which results from the fact that the effective birefringence of the erbium-ytterbium co-doped polarization maintaining fiber depends on the pump power and polarization state of the traversing signal. By using the proposed comb filter, a continuously tunable multiwavelength fiber ring laser in the L-band is successfully demonstrated.
