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1.94 GHz Passively Harmonic Mode-locked All-fiber Laser Using Polarization-maintaining Helical Long-period Grating

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Abstract

We have demonstrated an all-fiber passively harmonic mode-locked laser by using helical long-period grating inscribed in polarization-maintaining fiber for the first time. 1.94 GHz pulses at 63rd harmonic with 49.5dB super-mode suppression ratio are obtained.

© 2019 The Author(s)

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