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
马林, 孙将, 齐艳辉, 康泽新, 简水生
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)
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.
中图分类号: (Interference)