| FUNDAMENTAL AREAS OF PHENOMENOLOGY(INCLUDING APPLICATIONS) |
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Stable and High OSNR Compound Linear-Cavity Single-Longitudinal-Mode Erbium-Doped Silica Fiber Laser Based on an Asymmetric Four-Cavity Structure |
| FENG Ting1, YAN Feng-Ping1**, LI Qi1, PENG Wan-Jing1, FENG Su-Chun1, WEN Xiao-Dong1, LIU Peng2, TAN Si-Yu1 |
1Key Lab of All Optical Network and Advanced Telecommunication Network of Ministry of Education, Institute of Lightwave Technology, Beijing Jiaotong University, Beijing 100044
2Department of Physics, Xingtai College, Xingtai 054001
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| Cite this article: |
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FENG Ting, YAN Feng-Ping, LI Qi et al 2012 Chin. Phys. Lett. 29 104205 |
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Abstract We propose a stable and high optical signal-to-noise ratio (OSNR) compound linear-cavity single-longitudinal-mode (SLM) erbium-doped silica fiber laser. It consists of three uniform fiber Bragg gratings (FBGs) and two fiber couplers to form a simple asymmetric four-cavity structure to select the longitudinal mode. The stable SLM operation at the wavelength of 1544.053 nm with a 3 dB bandwidth of 0.014 nm and an OSNR of ～60 dB was verified experimentally. Under laboratory conditions, a power fluctuation performance of less than 0.05 dB for 5 h and wavelength variation of less than 0.01 nm for about 150 min is demonstrated. Finally, the characteristic of laser output power as a function of pump power is investigated. The proposed system provides a simple and cost-effective approach to realize a stable SLM fiber laser.
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Received: 28 May 2012
Published: 01 October 2012
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