中国物理B ›› 2013, Vol. 22 ›› Issue (7): 74204-074204.doi: 10.1088/1674-1056/22/7/074204

• ELECTROMAGNETISM, OPTICS, ACOUSTICS, HEAT TRANSFER, CLASSICAL MECHANICS, AND FLUID DYNAMICS • 上一篇    下一篇

Supercontinuum generated in all-normal dispersion photonic crystal fibers with picosecond pump pulses

李磐, 时雷, 毛庆和   

  1. Anhui Provincial Key Laboratory of Photonics Devices and Materials, Anhui Institute of Optics and Fine Mechanics, Chinese Academy of Sciences, Hefei 230031, China
  • 收稿日期:2013-01-22 修回日期:2013-03-21 出版日期:2013-06-01 发布日期:2013-06-01
  • 基金资助:
    Project supported by the National High Technology Research and Development Program of China (Grant No. 2011AA030203), the National Natural Science Foundation of China (Grant No. 61250017), and the Key Research Program of the Chinese Academy Sciences (Grant No. KJZD-EW-W02).

Supercontinuum generated in all-normal dispersion photonic crystal fibers with picosecond pump pulses

Li Pan (李磐), Shi Lei (时雷), Mao Qing-He (毛庆和)   

  1. Anhui Provincial Key Laboratory of Photonics Devices and Materials, Anhui Institute of Optics and Fine Mechanics, Chinese Academy of Sciences, Hefei 230031, China
  • Received:2013-01-22 Revised:2013-03-21 Online:2013-06-01 Published:2013-06-01
  • Contact: Mao Qing-He E-mail:mqinghe@aiofm.ac.cn
  • Supported by:
    Project supported by the National High Technology Research and Development Program of China (Grant No. 2011AA030203), the National Natural Science Foundation of China (Grant No. 61250017), and the Key Research Program of the Chinese Academy Sciences (Grant No. KJZD-EW-W02).

摘要: The supercontinuum (SC) generations in all-normal dispersion (ANDi) photonic-crystal fiber (PCF) pumped by high power picosecond pulses are investigated in this paper. Our results show that an octave SC may be achieved by pumping the ANDi PCF with picosecond pump pulses. However, the PCF length required may have to be lengthened to several tens of centimeters, which is much longer than that with femtosecond pump pulses. The relatively long PCF gives rise to much higher Raman gain and stronger Raman frequency shift compared to those with femtosecond pump pulses, which in turn not only cause a distorted temporal waveform and an un-flatted spectrum, but also severely degrade the coherence of the generated SC.

关键词: supercontinuum generation, photonic crystal fibers, optical wave breaking

Abstract: The supercontinuum (SC) generations in all-normal dispersion (ANDi) photonic-crystal fiber (PCF) pumped by high power picosecond pulses are investigated in this paper. Our results show that an octave SC may be achieved by pumping the ANDi PCF with picosecond pump pulses. However, the PCF length required may have to be lengthened to several tens of centimeters, which is much longer than that with femtosecond pump pulses. The relatively long PCF gives rise to much higher Raman gain and stronger Raman frequency shift compared to those with femtosecond pump pulses, which in turn not only cause a distorted temporal waveform and an un-flatted spectrum, but also severely degrade the coherence of the generated SC.

Key words: supercontinuum generation, photonic crystal fibers, optical wave breaking

中图分类号:  (Fiber lasers)

  • 42.55.Wd
42.65.Tg (Optical solitons; nonlinear guided waves) 42.81.-i (Fiber optics)