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Q -Switched DFB Fiber Laser Based on a Shape Memory Alloy Optical Fiber Phase Modulator

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6 Author(s)
Fraser, A. ; Phasoptx Inc., Montréal, QC, Canada ; Vallee, R. ; Deschenes, J. ; Bernier, M.
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A detailed analysis of the behavior of a DFB fiber laser based on a high-speed tunable intra-cavity phase-shifter is presented. The phase-shifter made of a specially designed shape memory alloy is inducing a birefringence, thus allowing the laser to operate on either x or y polarization mode in the CW regime or in the Q -switched regime. The spectral characteristics of the laser are analyzed in detail for both regimes and the cavity properties are derived from the relaxation oscillation frequency.

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Lightwave Technology, Journal of  (Volume:29 ,  Issue: 14 )