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Narrow linewidth random fiber laser based on weak grating array with a π-phase-shifted FBG

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Abstract

The π-phase-shifted FBG in proposed random fiber laser significantly inhibited the sub-cavity modes, emitting a narrow lasing of 225 Hz with 58 dB side-mode suppression ratio and providing a new option for high-resolution sensing. © 2019 The Author(s)

© 2019 The Author(s)

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