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Polarization characteristics of fiber DFB lasers related to sensing applications

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3 Author(s)
Ronnekleiv, E. ; Optoplan AS, Trondheim, Norway ; Ibsen, M. ; Cowle, G.J.

An experimental and theoretical investigation of how the polarization mode competition and beat frequency of Er-doped fiber distributed-feedback lasers depend on perturbations such as localized transverse forces, back reflections, or changes in pump polarization is reported. Good agreement between the experiments and a comprehensive theoretical model is obtained. Use of a dual-polarization laser as a transverse force sensor with a resolution on the order of 1-100 nN//spl radic/Hz above 20 Hz is also discussed.

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Quantum Electronics, IEEE Journal of  (Volume:36 ,  Issue: 6 )