Stimulated Brillouin Scattering in InGaP-on-Insulator Waveguides
Abstract
Stimulated Brillouin Scattering (SBS) is a nonlinear interaction between optical and acoustic waves in solids. First regarded as a parasitic process in optical fibers, it has gathered significant interest in microwave photonic applications such as optical signal processing and narrow linewidth lasers. While many Brillouin system demonstrations have been done on photonic chips, they struggle to provide simultaneous high Brillouin gain and narrow linewidth in a scalable platform, capable of integration with established photonic integrated circuits. Here, we present a novel integrated InGaP-on-SiO2 platform, where a single crystalline InGaP waveguide layer offers superior material properties and strong nonlinearities to support SBS near 1550 nm wavelength. We demonstrate backward SBS with a measured high Brillouin gain coefficient of 588 W−1 m−1 and a record narrow linewidth of 5.2 MHz at 9.346 GHz frequency shift. This work establishes a wafer-scale complementary metal-oxide semiconductor compatible fabrication process, paving a scalable path for high gain and narrow linewidth Brillouin photonics with applications such as precision signal processing.
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BibTeX
@misc{xue2026stimulated,
title = {{Stimulated Brillouin Scattering in InGaP-on-Insulator Waveguides}},
author = {Yuyang Xue and Lisa-Sophie Haerteis and Ryan L. Russell and Choon Kong Lai and Benjamin J. Eggleton and Michael J. Steel and Glenn Solomon and Kevin L. Silverman and Moritz Merklein and Andreas Boes and Nima Nader},
howpublished = {arXiv},
year = {2026},
month = sep,
doi = {10.48550/arxiv.2609.09006},
eprint = {2609.09006},
archivePrefix = {arXiv},
url = {https://arxiv.org/abs/2609.09006},
}
RIS
TY - UNPB
TI - Stimulated Brillouin Scattering in InGaP-on-Insulator Waveguides
AU - Yuyang Xue
AU - Lisa-Sophie Haerteis
AU - Ryan L. Russell
AU - Choon Kong Lai
AU - Benjamin J. Eggleton
AU - Michael J. Steel
AU - Glenn Solomon
AU - Kevin L. Silverman
AU - Moritz Merklein
AU - Andreas Boes
AU - Nima Nader
PY - 2026
DA - 2026/09/08
PB - arXiv
DO - 10.48550/arxiv.2609.09006
UR - https://arxiv.org/abs/2609.09006
AB - Stimulated Brillouin Scattering (SBS) is a nonlinear interaction between optical and acoustic waves in solids. First regarded as a parasitic process in optical fibers, it has gathered significant interest in microwave photonic applications such as optical signal processing and narrow linewidth lasers. While many Brillouin system demonstrations have been done on photonic chips, they struggle to provide simultaneous high Brillouin gain and narrow linewidth in a scalable platform, capable of integration with established photonic integrated circuits. Here, we present a novel integrated InGaP-on-SiO_2 platform, where a single crystalline InGaP waveguide layer offers superior material properties and strong nonlinearities to support SBS near 1550 nm wavelength. We demonstrate backward SBS with a measured high Brillouin gain coefficient of 588 W^−1 m^−1 and a record narrow linewidth of 5.2 MHz at 9.346 GHz frequency shift. This work establishes a wafer-scale complementary metal-oxide semiconductor compatible fabrication process, paving a scalable path for high gain and narrow linewidth Brillouin photonics with applications such as precision signal processing.
ER -