Stable single-mode operation of a narrow-linewidth, linear polarization erbium fibre ring laser using a saturable absorber

Z. Meng, G. Stewart, G.L. Whitenett

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This paper describes the design and operation of a stable narrow-linewidth linearly polarized fiber ring laser using a polarization-maintaining (PM) erbium-doped fiber as a saturable absorber. The effect of the PM fiber on suppressing mode hopping is experimentally demonstrated and optimum conditions for single-mode operation are identified. Laser output power is ∼ 4.7 mW at 1535 nm for a pump power of 94 mW, the polarization extinction ratio is 24.8 dB, the SNR is larger than 45 dB, the relative intensity noise is below −104 dB/Hz at frequencies above 150 kHz, and the linewidth is less than 1.5 kHz. Potential applications of the fiber laser for interferometric or spectroscopic fiber sensors are briefly discussed.
Original languageEnglish
Pages (from-to)2179-2183
Number of pages4
JournalJournal of Lightwave Technology
Issue number5
Publication statusPublished - 2006


  • fiber ring laser
  • linearly polarized laser
  • opticalfiber sensors
  • saturable absorber
  • single-mode (SM) laser.

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