Mutually-modulated cross-gain modulation and slow light

Shmuel Sternklar, Eyal Sarid, Maxim Wart, Er'el Granot

Research output: Contribution to journalArticlepeer-review

10 Scopus citations


The interaction of pump and Stokes light in a Brillouin medium, where both beams are modulated, can be utilized for controlling the group velocity of the amplified Stokes (or depleted pump). The dependence of the group velocity for this mutually-modulated cross-gain modulation (MMXGM) technique on the Brillouin gain parameter is studied. A sharp transition to slow light occurs in the G1α/β ≈a 1 regime, where G1 is the Brillouin gain parameter, and a and β are the pump and Stokes modulation indices, respectively. A comparison of MMXGM slow light to the Brillouin dispersion-based slow-light technique reveals the fundamental differences between them. The formation of higher harmonics of the modulation frequency is also discussed. The theoretical predictions are experimentally corroborated and potential applications in fiber-based sensing and interferometry are discussed.

Original languageEnglish
Article number104016
JournalJournal of Optics
Issue number10
StatePublished - Oct 2010


  • Slow light
  • Stimulated brillouin scattering


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