On-Chip Cross-Polarization Backward SBS in Lithium Niobate Waveguides

We report on the experimental demonstration of cross-polarization backward stimulated Brillouin scattering (BSBS) in lithium niobate on insulator (LNOI) waveguides. Performing polarization-sensitive pump and probe measurements, we captured both intra and intermodal scattering between counter-propaga...

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Bibliographic Details
Published in:arXiv.org 2024-11
Main Authors: Rodrigues, Caique C, Schilder, Nick J, Zurita, Roberto O, Magalhães, Letícia S, Shams-Ansari, Amirhassan, Felipe J L dos Santos, Paiano, Otávio M, Alegre, Thiago P M, Lončar, Marko, Wiederhecker, Gustavo S
Format: Article
Language:English
Subjects:
Intermodal
Lithium niobates
Scattering
Waveguides
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Summary:We report on the experimental demonstration of cross-polarization backward stimulated Brillouin scattering (BSBS) in lithium niobate on insulator (LNOI) waveguides. Performing polarization-sensitive pump and probe measurements, we captured both intra and intermodal scattering between counter-propagating fundamental optical modes. Remarkably, cross-polarization scattering achieved SBS gains exceeding \(G_{B}=\)80m\(^{-1}\)W\(^{-1}\). This substantial gain not only broadens the utility of polarization in SBS but also paves the way for high-performance devices, including ultra-narrowband lasers, robust non-reciprocal components, RF filters, and microwave-to-optical converters.
ISSN:2331-8422