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Optical Engineering

Dual-wavelength narrow-linewidth light source with ultranarrow wavelength spacing based on the pump-induced thermal effects in an Er-Yb-codoped distributed-Bragg-reflector fiber laser
Author(s): Hui Zhu; Chenghou Tu; Ting Lei; Wengang Guo; Yongnan Li; Fuyun Lu; Xinyong Dong; Dai Wei
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Paper Abstract

A dual-wavelength narrow-linewidth laser system, with ultranarrow wavelength spacing, is proposed and demonstrated. The operation principle of the laser system is based on the pump-induced thermal effects of the Er-Yb-doped fiber distributed Bragg reflector (DBR) laser. We designed and constructed a common Er-Yb-doped DBR fiber laser with proper parameters. With the pump power of the DBR laser increasing, the Bragg wavelengths and the bandwidths of the two gratings will change unequally. When the laser is pumped with 45 mW, we obtain stable dual-wavelength lasing with a 3-dB bandwidth of ≈0.014 nm and a wavelength spacing of ≈0.055 nm.

Paper Details

Date Published: 1 September 2008
PDF: 4 pages
Opt. Eng. 47(9) 094301 doi: 10.1117/1.2976431
Published in: Optical Engineering Volume 47, Issue 9
Show Author Affiliations
Hui Zhu, Nankai Univ. (China)
Chenghou Tu, Nankai Univ. (China)
Ting Lei, Nankai Univ (China)
Wengang Guo, Nankai Univ. (China)
Yongnan Li, Nankai Univ. (China)
Fuyun Lu, Nankai Univ. (China)
Xinyong Dong, Nankai Univ. (China)
Dai Wei, Nankai Univ. (China)

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