title: Tunable Er-doped fiber ring laser with single longitudinal mode operation based on Rayleigh backscattering in single mode fiber.
abstract: A tunable and single longitudinal mode Er-doped fiber ring laser (SLM-EDFRL) is proposed and demonstrated based on Rayleigh backscattering (RBS) in single mode fiber-28e (SMF-28e). Theory and experimental study on formation of SLM from normal multi-mode ring laser is demonstrated. The RBS feedback in 660 m SMF-28e is the key to ensure SLM laser oscillation. This tunable SLM laser can be tuned over 1549.7-1550.18 nm with a linewidth of 2.5-3.0 kHz and a side mode suppression ratio (SMSR) of ~72 dB for electrical signal power. The tuning range is determined by the bandpass filter and gain medium used in the experiment. The laser is able to operate at S+C+L band.
authors.affiliation: Department of Physics, University of Ottawa, Ottawa, Ontario, Canada.
authors.forename: Guolu
authors.initials: G
authors.lastname: Yin
authors.forename: Bhavaye
authors.initials: B
authors.lastname: Saxena
authors.forename: Xiaoyi
authors.initials: X
authors.lastname: Bao
mesh_terms: D003198:Computer Simulation; D017076:Computer-Aided Design; D004867:Equipment Design; D019544:Equipment Failure Analysis; D005063:Europium / Q000737:chemistry*; D005336:Fiber Optic Technology / Q000295:instrumentation*; D007834:Lasers; D008027:Light; D008962:Models, Theoretical; D012542:Scattering, Radiation
chemical_list: D005063:Europium