Yang Zhiqiang, Wen Meixun, Wan Lei, Feng Tianhua, Zhou Wenfeng, Liu Dong, Zeng Siqing, Yang Shuixian, Li Zhaohui
Opt Lett. 2022 Aug 1;47(15):3808-3811. doi: 10.1364/OL.464482.
This Letter presents the first, to the best of our knowledge, thin-film lithium niobate-chalcogenide based microring acousto-optic modulator where an interdigital transducer and a chalcogenide strip waveguide are integrated on X-cut thin-film lithium niobate. The microring resonator exhibits a high loaded quality factor of 5 × 10. The developed hybrid acousto-optic modulator with an interaction length of 120 µm demonstrates an effective half-wave voltage of only 1.74 V, which corresponds to a voltage-length product of 0.02 V•cm. The performance of the acousto-optic modulator demonstrated on the unsuspended thin-film lithium niobate-chalcogenide waveguide platform is on par with that obtained from an acoustic cavity assisted homogeneous lithium niobate counterpart.
据我们所知，本信函首次展示了基于薄膜铌酸锂-硫族化物的微环声光调制器，其中叉指换能器和硫族化物条形波导集成在X切薄膜铌酸锂上。该微环谐振器具有5×10的高负载品质因数。所开发的相互作用长度为120 µm的混合声光调制器的有效半波电压仅为1.74 V，对应的电压-长度积为0.02 V•cm。在非悬浮薄膜铌酸锂-硫族化物波导平台上展示的声光调制器性能与在声学腔辅助均匀铌酸锂对应物上获得的性能相当。
