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Narrow linewidth short cavity Brillouin ring laser for BOTDA systems

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Abstract

We analyze a new short-cavity layout for Brillouin sensing with a Brillouin ring laser source. The new source exhibits ultra narrow linewidth (10 kHz), good conversion efficiency and low RIN (~- 145 dB/Hz), providing the basis for an improved BOTDA BRL pump-probe source.

© 2020 The Author(s)

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