Tunable multiwavelength fiber laser using a comb filter based on erbium-ytterbium co-doped polarization maintaining fiber loop mirror

• Published in: Optics express Vol. 16; no. 6; pp. 3652 - 3658
• Main Authors: Sun, Guoyong, Moon, Dae Seung, Lin, Aoxiang, Han, Won-Taek, Chung, Youngjoo
• Format: Journal Article
• Language: English
• Published: United States 17-03-2008
• Subjects: Equipment Design; Equipment Failure Analysis; Fiber Optic Technology - instrumentation; Lasers, Solid-State; Lenses; Refractometry - instrumentation
• ISSN: 1094-4087; 1094-4087
• DOI: 10.1364/OE.16.003652

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.