Narrow linewidth Erbium-doped photonic crystal fiber laser

作者：Cheng Jian Qun; Ruan Shuang Chen^*; Guo Chun Yu; Hu Xue Juan; Zheng Wan Jun

来源：Journal of Shenzhen University Science and Engineering, 2011, 28(5): 400-404.

• All fiber
• Conventional fibers
• Erbium doped
• Erbium-doped photonic crystal fiber laser
• Fiber Bragg
• Gain medium
• High quality
• Lasing wavelength
• Linear cavity
• Narrow bands
• Narrow-line width
• Optoelectronics and laser technology
• Output power
• Output wavelengths
• Resonant cavity
• Room temperature
• Side mode suppression ratios
• Single mode
• Slope efficiencies

In order to obtain fiber laser with high-quality output, a kind of new single mode Erbium-doped photonic crystal fiber (PCF) was used to take the place of conventional fiber and was employed as gain medium in the resonant cavity. The PCF along with two matched narrowband fiber Bragg gratings used as selective wavelength components formed a simple linear cavity construction. Thus a novel all-fiber narrow linewidth Erbium-doped PCF laser was demonstrated experimentally, which had only 55 pm linewidth and side-mode suppression ratio of better than 50 dB. Under the pump of laser diode, the proposed PCF laser obtains a maximal output power of 8 mW at 1550.22 nm and a slope efficiency of 3.2%. Repeated scannings of output wavelength of the proposed PCF laser per minute within 10 min indicate that the lasing wavelength is rather stable at room temperature. The average output power of the proposed PCF laser shows a maximal fluctuation less than 0.07 dB within 12 min.

• 出版日期2011