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Optical Engineering

Switchable single-longitudinal-mode dual-wavelength erbium-doped fiber laser based on one polarization-maintaining fiber Bragg grating in linear cavity
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Paper Abstract

Switchable single-longitudinal-mode (SLM) dual-wavelength erbium-doped fiber laser at room temperature is demonstrated. One fiber Bragg grating (FBG) directly written in a polarization-maintaining and photosensitive erbium-doped fiber as the wavelength-selective component is used in a linear laser cavity. Because of the polarization hole burning enhanced by the polarization-maintaining FBG, the laser can be designed to operate in stable dual-wavelength or wavelength-switching modes with a wavelength spacing of 0.202 nm by adjusting a polarization controller. The stable SLM operation is guaranteed by a saturable absorber. The optical signal-to-noise ratio of the laser is >40 dB. The amplitude variation in nearly 1.5 h is <0.5 dB for both wavelengths.

Paper Details

Date Published: 1 October 2009
PDF: 5 pages
Opt. Eng. 48(10) 104201 doi: 10.1117/1.3231602
Published in: Optical Engineering Volume 48, Issue 10
Show Author Affiliations
Suchun Feng, Beijing Jiaotong Univ. (China)
Ou Xu, Beijing Jiaotong Univ. (China)
Shaohua Lu, Beijing Jiaotong Univ. (China)
Shuisheng Jian, Beijing Jiaotong Univ. (China)

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