Michelson Interferometer characterisation of noise reduction in DFB fibre lasers | Zendy

Albert Canagasabey | Zendy; David R.H. Jones | Zendy; David A. Mann | Zendy; John Canning | Zendy; Simon Fleming | Zendy; John Holdsworth | Zendy

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Michelson Interferometer characterisation of noise reduction in DFB fibre lasers

Author(s) -

Albert Canagasabey,

David R.H. Jones,

David A. Mann,

John Canning,

Simon Fleming,

John Holdsworth

Publication year - 2011

Publication title -

proceedings of spie, the international society for optical engineering/proceedings of spie

Language(s) - English

Resource type - Conference proceedings

SCImago Journal Rank - 0.192

H-Index - 176

eISSN - 1996-756X

pISSN - 0277-786X

DOI - 10.1117/12.915942

Subject(s) - laser linewidth , michelson interferometer , optics , laser , interferometry , materials science , noise (video) , gaussian , semiconductor laser theory , optoelectronics , physics , computer science , quantum mechanics , artificial intelligence , image (mathematics)

A comparison is made between unpackaged and packaged distributed feedback (DFB) fibre lasers using the Michelson interferometer configuration for delayed self-heterodyne interferometery (MlDSHI) 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

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