Switchable multiwavelength erbium-doped fiber laser employing wavelength-dependent loss

Xinhuan Feng, Ping Kong Alexander Wai, Hwa Yaw Tam, Chao Lu, Bai Ou Guan

Research output: Journal article publicationJournal articleAcademic researchpeer-review

11 Citations (Scopus)


A novel switchable multiwavelength erbium-doped fiber laser (EDFL) is proposed and demonstrated based on two comb filters. One comb filter is used to define the wavelength spacing, the other filter with a very narrow wavelength spacing is used to induce wavelength-dependent loss (WDL) effect to suppress the mode competition caused by homogeneous gain broadening of the erbium-doped fiber (EDF). As a result, triple-wavelength lasing operation with wavelength spacing of 0.8 nm has been achieved. Wavelength switching operation of the laser was also obtained by adjustment of a polarization controller (PC) in the cavity. The measured power fluctuation of each wavelength is less than 0.4 dB.
Original languageEnglish
Pages (from-to)138-140
Number of pages3
JournalOptical Fiber Technology
Issue number2
Publication statusPublished - 1 Mar 2011


  • Erbium-doped fiber lasers (EDFLs)
  • Multiwavelength fiber lasers
  • Wavelength-dependent loss (WDL)

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Electrical and Electronic Engineering


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