中国物理B ›› 2015, Vol. 24 ›› Issue (8): 84201-084201.doi: 10.1088/1674-1056/24/8/084201

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

Switchable multi-wavelength fiber laser based on modal interference

马林, 孙将, 齐艳辉, 康泽新, 简水生   

  1. Key Laboratory of All Optical Network & Advanced Telecommunication Network of EMC, Beijing Jiaotong University, Beijing 100044, China
  • 收稿日期:2014-12-13 修回日期:2015-01-28 出版日期:2015-08-05 发布日期:2015-08-05

Switchable multi-wavelength fiber laser based on modal interference

Ma Lin (马林), Sun Jiang (孙将), Qi Yan-Hui (齐艳辉), Kang Ze-Xin (康泽新), Jian Shui-Sheng (简水生)   

  1. Key Laboratory of All Optical Network & Advanced Telecommunication Network of EMC, Beijing Jiaotong University, Beijing 100044, China
  • Received:2014-12-13 Revised:2015-01-28 Online:2015-08-05 Published:2015-08-05
  • Contact: Ma Lin E-mail:lin.ma.wf@gmail.com

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摘要： A comb fiber filter based on modal interference is proposed and demonstrated in this paper. Here two cascaded up-tapers are used to excite the cladding mode, and a core-offset jointing point is used to act as an interference component. Experimental results show that this kind of structure possesses a comb filter property in a range of the C-band. The measured extinction ratio is better than 12 dB with an insertion loss of about 11 dB. A switchable multi-wavelength erbium-doped fiber laser based on this novel comb filter is demonstrated. By adjusting the polarization controller, the output laser can be switched among single-, dual-, and three-wavelengths with a side mode suppression ratio of better than 45 dB.

关键词: fiber laser, up-taper, core-offset, modal interferometer

Abstract: A comb fiber filter based on modal interference is proposed and demonstrated in this paper. Here two cascaded up-tapers are used to excite the cladding mode, and a core-offset jointing point is used to act as an interference component. Experimental results show that this kind of structure possesses a comb filter property in a range of the C-band. The measured extinction ratio is better than 12 dB with an insertion loss of about 11 dB. A switchable multi-wavelength erbium-doped fiber laser based on this novel comb filter is demonstrated. By adjusting the polarization controller, the output laser can be switched among single-, dual-, and three-wavelengths with a side mode suppression ratio of better than 45 dB.

Key words: fiber laser, up-taper, core-offset, modal interferometer

中图分类号:  (Interference)

  • 42.25.Hz
42.55.Wd (Fiber lasers)