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Switchable multiwavelength erbium-doped fiber laser with cascaded fiber grating cavities

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2 Author(s)
Qinghe Mao ; Dept. of Phys. & Comput., Wilfrid Laurier Univ., Waterloo, Ont., Canada ; Lit, John W.Y.

We propose a new concept to produce switchable multiwavelength oscillations with a cascaded fiber Bragg grating overlapping cavity erbium-doped fiber laser. The laser can be designed to operate in multiwavelength or in wavelength switching modes. The different lines have different thresholds. For three-wavelength oscillation, the output powers are linear or piecewise linear functions of the input pump power. An output with a variation of only 1.5 dB has been achieved with an input pump power of 100 mW. For wavelength switching, three single-wavelength and two dual-wavelength operation regions have been obtained toy adjusting the input pump levels.

Published in:

Photonics Technology Letters, IEEE  (Volume:14 ,  Issue: 5 )