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Optical Engineering

Room-temperature multiwavelength erbium-doped fiber ring laser based on phase modulation of semiconductor optical amplifier with lasing-wavelength and spacing tunability
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Paper Abstract

We have experimentally investigated a stably tunable multiwavelength erbium-doped fiber ring laser based on phase modulation of a semiconductor optical amplifier with lasing wavelength and spacing tunability at room temperature. Stable multiwavelength operation is obtained by direct modulation of the bias current in the amplifier. We demonstrate such a laser incorporating a tunable Lyot-Sagnac filter with two segments of polarization-maintaining fibers with wavelength-spacing and lasing wavelength tunability. We successfully achieved 1.0-nm-spacing eight-channel and 0.8-nm-spacing ten-channel lasing wavelengths at room temperature. The lasing wavelength of the laser can be also controlled by a polarization controller.

Paper Details

Date Published: 1 March 2007
PDF: 5 pages
Opt. Eng. 46(3) 034202 doi: 10.1117/1.2432892
Published in: Optical Engineering Volume 46, Issue 3
Show Author Affiliations
Young-Geun Han, Korea Institute of Science and Technology (South Korea)
Chul Han Kim, Univ. of Seoul (South Korea)
Sang Bae Lee, Korea Institute of Science and Technology (South Korea)


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