{"691847":{"#nid":"691847","#data":{"type":"event","title":"Ph.D. Dissertation Defense - Zhongdi Peng","body":[{"value":"\u003Cp\u003E\u003Cstrong\u003ETitle\u003C\/strong\u003E\u003Cem\u003E:\u0026nbsp; Heterogeneous Platforms for Ultra-Fast and Low-Power Active Integrated Photonic Structures\u003C\/em\u003E\u003C\/p\u003E\u003Cp\u003E\u003Cstrong\u003ECommittee:\u003C\/strong\u003E\u003C\/p\u003E\u003Cp\u003EDr.\u0026nbsp;Ali Adibi, ECE, Chair, Advisor\u003C\/p\u003E\u003Cp\u003EDr.\u0026nbsp;Stephen Ralph, ECE\u003C\/p\u003E\u003Cp\u003EDr.\u0026nbsp;Benjamin Klein, ECE\u003C\/p\u003E\u003Cp\u003EDr.\u0026nbsp;John Cressler, ECE\u003C\/p\u003E\u003Cp\u003EDr.\u0026nbsp;Phillip First, Physics\u003C\/p\u003E","summary":"","format":"limited_html"}],"field_subtitle":"","field_summary":[{"value":"\u003Cp\u003EThe objective of this dissertation is to develop heterogeneous photonic platforms and device architectures that improve the performance of electro-photonic devices and interconnects for next-generation optical communications. The research focuses on achieving low optical loss, high-speed operation, compact footprint, and low power consumption through the integration of various material platforms. Conventional single-material photonic platforms often require tradeoffs between passive optical performance and active electro-optic modulation performance, motivating the development of heterogeneous architectures that leverage the unique properties of different materials. Heterogeneous silicon nitride (SiN)- on -lithium niobate (LN) platform are investigated and demonstrated using multiple kinds of SiN materials along with various integration approaches. These platforms enable the development of high-performance photonic devices for communications systems, including a high-efficiency, low-cost frequency converter and a high-speed, low-loss coupling modulator. The results demonstrate the potential of heterogeneous SiN\u2013LN integration to simultaneously enhance passive and active electro-optic functionality. It also presents the researches of CMOS-compatible silicon photonics in multi-project-wafer (MPW) tapeout through monolithic integration of electronics and photonics on a heterogeneous platform. Building on this platform, CMOS-photonic-based thermal-optic tuning and low-loss electro-photonic co-packaging are demonstrated for optical communication applications. Together, these developments establish heterogeneous integration as a promising pathway toward high-performance, energy-efficient, and scalable electro-photonic systems for next-generation communications.\u003C\/p\u003E","format":"limited_html"}],"field_summary_sentence":[{"value":"Heterogeneous Platforms for Ultra-Fast and Low-Power Active Integrated Photonic Structures "}],"uid":"28475","created_gmt":"2026-08-20 21:55:24","changed_gmt":"2026-08-20 21:56:36","author":"Daniela Staiculescu","boilerplate_text":"","field_publication":"","field_article_url":"","field_event_time":{"event_time_start":"2026-08-26T11:00:00-04:00","event_time_end":"2026-08-26T13:00:00-04:00","event_time_end_last":"2026-08-26T13:00:00-04:00","gmt_time_start":"2026-08-26 15:00:00","gmt_time_end":"2026-08-26 17:00:00","gmt_time_end_last":"2026-08-26 17:00:00","rrule":null,"timezone":"America\/New_York"},"location":"Room W218, Van Leer","extras":[],"related_links":[{"url":"https:\/\/teams.microsoft.com\/meet\/215139061298926?p=NFmIrWxnsv0x0oOtG9","title":"Microsoft Teams Link "}],"groups":[{"id":"434381","name":"ECE Ph.D. Dissertation Defenses"}],"categories":[],"keywords":[{"id":"100811","name":"Phd Defense"},{"id":"1808","name":"graduate students"}],"core_research_areas":[],"news_room_topics":[],"event_categories":[{"id":"1788","name":"Other\/Miscellaneous"}],"invited_audience":[{"id":"78771","name":"Public"}],"affiliations":[],"classification":[],"areas_of_expertise":[],"news_and_recent_appearances":[],"phone":[],"contact":[],"email":[],"slides":[],"orientation":[],"userdata":""}}}