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  • CLEO/Europe and IQEC 2007 Conference Digest
  • (Optica Publishing Group, 2007),
  • paper CD_8

Intensity noise in SBS with Seed Signal Generated through Injection Locking

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Abstract

Distributed Brillouin-based optical fiber sensors are of a great interest for the monitoring of strain and temperature distributions within large structures in civil engineering. Injection locking of two DFB semiconductor lasers is a simple and rather universal technique that allows generation of low-noise coherent signals (AM, FM, frequency-shifted or frequency sweeping optical waveforms) relevant for operation with different Brillouin sensors. The accuracy of such sensors among other factors is limited by the Stokes intensity noise [1,2] dominating in MHz-frequency range.

© 2007 IEEE

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