A widely tunable narrow linewidth semiconductor fiber ring laser

Deyu Zhou, Paul R. Prucnal, Ivan Glesk

Research output: Contribution to journalArticlepeer-review

48 Citations (Scopus)


We have demonstrated a novel approach to obtain a 0.1-nm line width laser with 38-dB sidemode suppression by utilizing a 1.3-μm semiconductor optical amplifier in a fiber unidirectional ring that consists of a linear polarizer and polarization controllers. The laser has a low-threshold current of 22.5 mA as well as a widely tuning range of 28 nm. The new approach is applicable to the 1.55-μm region as well. It is expected that nanosecond wavelength tuning speed is feasible using this approach in conjunction with fast electrooptic polarization controllers, short cavities and low-cavity losses.

Original languageEnglish
Pages (from-to)781-783
Number of pages3
JournalIEEE Photonics Technology Letters
Issue number6
Publication statusPublished - 1 Jun 1998


  • electrooptic polarization controller
  • Lyot filter
  • narrow linewidth
  • polarization maintaining fibers
  • semiconductor fiber ring laser
  • semiconductor optical amplifier
  • tunable lasers
  • wavelength-division multiplexing


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