Novel on chip rotation detection based on the acousto-optic effect in surface acoustic wave gyroscopes
Novel on chip rotation detection based on the acousto-optic effect in surface acoustic wave gyroscopes
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DOI：
10.1364/oe.26.025060
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发表时间：
2018-09-17
期刊：
影响因子：
3.8
通讯作者：
Piazza, Gianluca
中科院分区：
文献类型：
--
作者：
Mahmoud, Mohamed;Mahmoud, Ashraf;Piazza, Gianluca
提出了一种由光子集成器件嵌入两个固有匹配的声表面波谐振器组成的声光陀螺。这构成了第一次演示的微机械应变为基础的光机械陀螺仪，使用的有效指数的光波导由于声光效应，而不是传统的位移传感。理论分析比较了各种光子相位传感技术，并通过实验验证了马赫-曾德尔干涉仪的情况下。以及跑道谐振器。这第一个原型集成了声学和光子组件在同一个锂绝缘体上的钛酸盐（LNOI）基板，并构成了AOG的概念演示的第一个证明。这种方法使一类新的微机械陀螺仪的发展，结合了传统的微尺度振动陀螺仪和光学陀螺仪的优点。(C)2018年美国光学学会根据OS. A开放获取出版协议的条款
An Acousto-Optic Gyroscope (AOG) consisting of a photonic integrated device embedded into two inherently matched piezoelectric surface acoustic wave (SAW) resonators sharing the same acoustic cavity is presented. This constitutes the first demonstration of a micromachined strain-based optomechanical gyroscope that uses the effective index of the optical waveguide due to the acousto-optic effect rather than conventional displacement sensing. The theoretical analysis comparing various photonic phase sensing techniques is presented and verified experimentally for the cases based on a Mach-Zehnder interferometer. as well as a racetrack resonator. This first prototype integrates acoustic and photonic components on the same lithium niobate on insulator (LNOI) substrate and constitutes the first proof of concept demonstration of the AOG. This approach enables the development of a new class of micromachined gyroscopes that combines the advantages of both conventional microscale vibrating gyroscopes and optical gyroscopes. (C) 2018 Optical Society of America under the terms of the OS.A Open Access Publishing Agreement