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- Title
Tailorable Brillouin Light Scattering in a Lithium Niobate Waveguide.
- Authors
Wang, Wuyue; Yu, Yu; Li, Yunfei; Bai, Zhenxu; Wang, Gong; Li, Kai; Song, Changyu; Wang, Zhiyong; Li, Sensen; Wang, Yulei; Lu, Zhiwei; Li, Yuhai; Liu, Tongyu; Yan, Xiusheng
- Abstract
Stimulated Brillouin scattering (SBS) lasers based on silicon waveguides with large SBS gain have been widely used in frequency tunable laser emissions, mode-locked pulse lasers, low-noise oscillators, optical gyroscopes and other fields. However, among SBS lasers, the realization of Brillouin laser output often requires a longer waveguide length, which not only increases waveguide loss but also increase the size of the device. As a new medium, lithium niobate has been fabricated into a new type of hybrid structure. Meanwhile, the width of a suspended waveguide is adjusted to tune the phonon frequency of an SBS laser based on lithium niobate substrate. Simulation results show that the tunable forward SBS effect is realized in a lithium niobate-suspended optical waveguide, showing a larger forward stimulated Brillouin scattering gain of 0.31 W−1m−1. The tunable phonon frequency ranges from 1 to 15 GHz. Therefore, utilizing the photon–phonon conversion effect, the waveguide system with LiNbO3 will pave a new way forward with better integration.
- Subjects
BRILLOUIN scattering; LITHIUM niobate; LIGHT scattering; OPTICAL gyroscopes; TUNABLE lasers; MODE-locked lasers
- Publication
Applied Sciences (2076-3417), 2021, Vol 11, Issue 18, p8390
- ISSN
2076-3417
- Publication type
Article
- DOI
10.3390/app11188390