Tunable dual-wavelength-switching fiber grating laser

Y. Z. Xu, Hwa Yaw Tam, W. C. Du, M. S. Demokan

Research output: Journal article publicationJournal articleAcademic researchpeer-review

63 Citations (Scopus)


We report a tunable dual-wavelength-switching fiber grating laser by exploiting the large homogeneous gain broadening in erbium (Er)-doped fiber to suppress simultaneous lasing. Wavelength switching was accomplished through a novel design which has two overlapping cavities sharing a single-gain medium. The loss corresponding to one of the lasing wavelengths can be modulated via an optical chopper. Output power of about 6 mW and extinction ratio up to 50 dB were observed. The lasing wavelengths were tunable and switching was demonstrated for wavelength separations ranging from 0.35 to 23.5 nm.
Original languageEnglish
Pages (from-to)334-336
Number of pages3
JournalIEEE Photonics Technology Letters
Issue number3
Publication statusPublished - 1 Mar 1998


  • Dual wavelength switching
  • Erbium-doped fiber laser
  • Fiber grating laser
  • Homogeneous broadening

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Atomic and Molecular Physics, and Optics
  • Electrical and Electronic Engineering


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