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Single mode EDF fiber laser using an ultra-narrow bandwidth tunable optical filter.
- Source :
-
Optik - International Journal for Light & Electron Optics . Jan2015, Vol. 126 Issue 2, p179-183. 5p. - Publication Year :
- 2015
-
Abstract
- Single longitudinal mode (SLM) erbium-doped fiber (EDF) laser operation using a commercialized ultra-narrow bandwidth optical filter has been demonstrated. A 2-m long EDF with an absorption coefficient of 24 dB m −1 at the pump wavelength is used as gain medium. The ultra-narrow tunable filter is used for selection of a single longitudinal mode from the available spectrum of multiple modes, which originally exist in the FBG's reflection spectrum. Our approach provides a relatively simple and direct method for realization of SLM operation. A high-resolution optical spectral analyser with a resolution of 0.16 pm is used to observe the output spectrum. To verify the SLM operation, the delayed self-heterodyne method is used, giving a measured laser linewidth of 61.5 kHz. [ABSTRACT FROM AUTHOR]
Details
- Language :
- English
- ISSN :
- 00304026
- Volume :
- 126
- Issue :
- 2
- Database :
- Academic Search Index
- Journal :
- Optik - International Journal for Light & Electron Optics
- Publication Type :
- Academic Journal
- Accession number :
- 99742535
- Full Text :
- https://doi.org/10.1016/j.ijleo.2014.08.150