用于超高速光子学的异质集成 SiN 上 TFLN 平台

该项目将薄膜铌酸锂与氮化硅相结合，构建了一个可扩展的电光平台，重点应用于高带宽器件。研究内容涉及材料界面、光学跃迁及射频设计，旨在优化调制效率并确保低损耗传输。申请者应具备物理学或相关学科背景。

About the project Combining low-loss optical routing with high-speed modulation requires complementary photonic materials. This project will integrate thin-film lithium niobate with silicon nitride to develop a scalable electro-optic platform. Research will address material integration, optical transitions and radio-frequency design for high-bandwidth devices and advanced photonic circuits. Silicon nitride (SiN) provides low-loss passive photonic circuits, while thin-film lithium niobate (TFLN) offers a strong Pockels effect for high-speed electro-optic control. Integrating these capabilities requires simultaneous control of material interfaces, optical mode transfer and radio-frequency propagation. This project aims to develop a heterogeneous TFLN-on-SiN platform for high-bandwidth electro-optic devices. The central research question is how integration processes and optical and electrode designs can be coordinated to achieve efficient modulation while preserving low-loss passive routing and fabrication tolerance. The research will investigate bonding or transfer processes and develop optical transitions between SiN waveguides and TFLN device regions. Modelling and experimental characterisation will quantify transition loss and sensitivity to geometry, alignment and process variation. High-speed modulators will provide the primary device demonstrator. Optical and radio-frequency simulations will guide electrode design, addressing electro-optic overlap, impedance matching, velocity matching and electrode loss. Fabricated devices will be assessed through measurements of modulation efficiency, insertion loss and electro-optic bandwidth. The validated platform will also provide a basis for investigating wavelength conversion or electro-optic frequency-comb generation. The expected contribution is an experimentally validated integration process, high-bandwidth device designs providing at least 100GHz electro-optical bandwidth, and quantified fabrication tolerances. These outcomes will support reusable electro-optic building blocks for high-speed optical interconnects, microwave photonics and frequency-comb systems. Comprehensive training will be provided in photonic and optical modelling using Ansys Lumerical, COMSOL Multiphysics and Zemax, alongside full equipment training in the University of Southampton’s cleanroom facilities. You'll also receive hands-on training in optical measurements and silicon photonic chip testing, including optical alignment, fibre-to-chip coupling and device characterisation. Together, these activities will develop the skills required to design, fabricate and experimentally validate integrated photonic devices. The School of Optoelectronics (ORC) is committed to promoting equality, diversity inclusivity as demonstrated by our Athena SWAN award. We welcome all applicants regardless of their gender, ethnicity, disability, sexual orientation or age, and will give full consideration to applicants seeking flexible working patterns and those who have taken a career break. The University has a generous maternity policy, onsite childcare facilities, and offers a range of benefits to help ensure employees’ well-being and work-life balance. The University of Southampton is committed to sustainability and has been awarded the Platinum EcoAward.

入学要求 英国南安普顿大学授予的2:1荣誉学位，或其国际等效学位，专业为物理学或相关学科。

资助：竞争性资助 学费与资助 我们为英国本土学生和国际学生提供多种资助机会。符合条件的学生可通过“地平线欧洲”学费减免，自动免除国际学生学费与英国本土学生学费之间的差额。 大学通过竞争性遴选授予的校长助学金，为遴选排名靠前的申请人支付国际学生学费与英国本土学生学费之间的差额。 本校各学院通过竞争性遴选提供的博士奖助金，通常为遴选排名靠前的申请人支付按英国本土学生标准收取的学费，并提供生活津贴。 资助采用滚动授予方式，因此请尽早申请，以尽可能增加进入资助评选的机会。 如需了解更多信息，请访问我们的研究生研究资助页面。

如何申请 您需： 选择课程类型（研究型）、2027/28学年、工程与物理科学学院 选择全日制或非全日制 搜索博士项目 PhD ORC（7097） 在申请表第2部分填写导师姓名 申请材料应包括： 您的CV（个人简历） 2份学术推荐信 截至目前的学位课程成绩单和证书 英语语言资格证明（如适用）