| Original Articles |
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Realization of Stable Narrow Linewidth Dual-Wavelength Lasing in an Erbium-Doped Fibre Laser by Cleaving the Wavelength-Selective Filter Spectrum |
| JIA Xiu-Jie;LIU Yan-Ge;SI Li-Bin;GUO Zhan-Cheng;FU Sheng-Gui;LIU Feng-Nian;YUAN Shu-Zhong;DONG Xiao-Yi |
| Institute of Modern Optics, Nankai University, Tianjin 300071 |
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| Cite this article: |
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JIA Xiu-Jie, LIU Yan-Ge, SI Li-Bin et al 2006 Chin. Phys. Lett. 23 2092-2094 |
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Abstract We propose and demonstrate a new concept of stable narrow-line-width and close wavelength spacing dual-wavelength lasing in an Er-doped fibre ring laser (EDFRL) by cleaving the spectrum with a wavelength-selective component in the EDFRL. A fibre loop mirror (FLM) combining with a polarization controller (PC) acts as the cleaver. The cleaver can produce a fine pectinate spectrum. By adjusting the PC, the fine pectinate spectrum can be so changeable that cleaving the spectrum of a fibre Bragg grating (FBG) into two parts. As a result, we obtain the dual-wavelength fibre lasering with a bandwidth of only 0.03nm and a wavelength spacing of only 0.07nm. Furthermore, the laser can also perform stable switchable single wavelength or stable different-bandwidth dual-wavelength by carefully adjusting the PC at room temperature.
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| Keywords:
42.55.Wd
42.60.Da
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Published: 01 August 2006
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| PACS: |
42.55.Wd
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(Fiber lasers)
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42.60.Da
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(Resonators, cavities, amplifiers, arrays, and rings)
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