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Optica Publishing Group
  • Chinese Optics Letters
  • Vol. 2,
  • Issue 5,
  • pp. 282-284
  • (2004)

A unidirectional room temperature multi-wavelength fiber ring laser without isolator

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Abstract

A simplified ring cavity for achieving a unidirectional room temperature multi-wavelength erbium-doped fiber ring laser without optical isolator is demonstrated. The fiber ring cavity is built in such a way that the optical fields propagating in two directions suffer different losses caused by one sampled fiber Bragg grating. Furthermore, simultaneous multi-wavelength lasing with 0.8-nm intervals is demonstrated with sinusoidal phase modulation just before the sampled fiber Bragg grating to prevent single-wavelength lasing and unstable wavelength oscillation.

© 2005 Chinese Optics Letters

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