Multi-wavelength erbium-doped fiber ring lasers based on an optical fiber tip interferometer

Heming Wei, Abhishek K. Amrithanath, Sridhar Krishnaswamy*

*Corresponding author for this work

Research output: Chapter in Book/Report/Conference proceedingConference contribution

1 Scopus citations


Rare earth-doped fiber lasers are interesting in the field of optical fiber lasing and sensing. One of the interesting topics is the tunable/switched multi-wavelength lasers. However, due to the homogeneous broadening gain, it is difficult to generate multiple wavelengths in the fiber lasers based on erbium-doped fibers. Here, we propose a tunable multiwavelength erbium-doped fiber ring laser based on an optical fiber tip Fabry-Perot (FP) interferometer, which acts a wavelength filter and a reflector of the fiber ring laser. With the purpose to propose a method for switch multiwavelength spectra, the strain and thermal variations around the modal interferometers are investigated. The spectra are symmetric with a maximal power difference about 25 dB between the lasing modes and the average of the side mode suppression ratio, which is tuned into the C-band with a resolution of 0.02 nm. This laser offers low wavelength drift, good signal to noise ratio and high-power stability, and can therefore be used for sensing applications.

Original languageEnglish (US)
Title of host publicationOptical Components and Materials XVI
EditorsMichel J. F. Digonnet, Shibin Jiang
ISBN (Electronic)9781510624702
StatePublished - Jan 1 2019
EventOptical Components and Materials XVI 2019 - San Francisco, United States
Duration: Feb 4 2019Feb 6 2019

Publication series

NameProceedings of SPIE - The International Society for Optical Engineering
ISSN (Print)0277-786X
ISSN (Electronic)1996-756X


ConferenceOptical Components and Materials XVI 2019
CountryUnited States
CitySan Francisco


  • Erbium-doped fiber ring laser
  • Fabry-Perot interferometer
  • Optical fiber sensors
  • Tunable multi-wavelength laser

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics
  • Computer Science Applications
  • Applied Mathematics
  • Electrical and Electronic Engineering

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