Characterisation of a Nd3+-doped fibre laser incorporating an etalon formed between the fibre facet and dielectric mirror

Yahua Li*, Stuart D. Jackson, Simon Fleming

*Corresponding author for this work

Research output: Contribution to journalArticle

3 Citations (Scopus)


Lasing on up to 15 simultaneous wavelengths is demonstrated experimentally with the use of an air-spaced etalon formed between the dichroic mirror and the adjacent fibre facet. A maximum measured frequency shift of 25.4 GHz/μm was observed, and there was only an ∼11% decrease in the output power at the maximum mirror-fibre separation of 400 μ. A theoretical analysis of the etalon effect in relation to the performance of the fibre laser is also included. The simulation includes the dependence of the effective reflectivity of the mirror and spectral peak spacing on the mirror-fibre separation. The experimental results are consistent with the simulation.

Original languageEnglish
Pages (from-to)385-389
Number of pages5
JournalOptics Communications
Issue number4-6
Publication statusPublished - 15 Oct 2004
Externally publishedYes



  • Double clad fibre laser
  • Effective reflectivity
  • Free spectral range
  • Intracavity etalon
  • Multi-wavelength

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