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  • 2015 European Conference on Lasers and Electro-Optics - European Quantum Electronics Conference
  • (Optica Publishing Group, 2015),
  • paper CI_5_5

Monolithic dual-wavelength DFB lasers for the generation of optically-carried RF local oscillators

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Abstract

Optical heterodyning for photonic oscillators is now firmly established. The optically-carried RF signal is provided by the beat note between two laser modes, which is usually locked to a RF reference. While active locking using phase-locked loops have been shown to transfer the spectral purity of the reference to the beat note, these architectures need a way to tune the frequency difference electronically [1]. Here, we propose to use pure optical locking, that is mutual injection locking by submitting DFB lasers to intensity modulated optical feedback [2].

© 2015 IEEE

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