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Proceedings Paper

Michelson Interferometer characterisation of noise reduction in DFB fibre lasers
Author(s): Albert Canagasabey; David Jones; David Mann; John Canning; Simon Fleming; John Holdsworth
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Paper Abstract

A comparison is made between unpackaged and packaged distributed feedback (DFB) fibre lasers using the Michelson interferometer configuration for delayed self-heterodyne interferometery (MIDSHI) to ascertain the improvements to the external environmental noise, quantified by reductions in the Gaussian linewidth. Voigt fitting is used to extract and separate out the Lorentzian and Gaussian linewidth contributions and therefore the associated sources of noise. Significant improvements in the Gaussian linewidth were achieved as a result of significant reductions in the sensitivity of the DFB laser to external perturbations using packaging. However, a broadening of the laser Lorentzian linewidth was observed.

Paper Details

Date Published: 30 January 2012
PDF: 7 pages
Proc. SPIE 8351, Third Asia Pacific Optical Sensors Conference, 83511J (30 January 2012); doi: 10.1117/12.915942
Show Author Affiliations
Albert Canagasabey, The Univ. of Sydney (Australia)
David Jones, Thales Underwater Systems (Australia)
David Mann, Thales Underwater Systems (Australia)
John Canning, The Univ. of Sydney (Australia)
Simon Fleming, The Univ. of Sydney (Australia)
John Holdsworth, Univ. of Newcastle (Australia)

Published in SPIE Proceedings Vol. 8351:
Third Asia Pacific Optical Sensors Conference
John Canning; Gangding Peng, Editor(s)

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